E20-326 Emc Symmetrix Solutions Design Exam

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http://www.TwPass.com E20-326 EMC Symmetrix Solutions Design Exam http://www.twpass.com/twpass.com/exam.aspx?eCode= E20-326 The E20-326 practice exam is written and formatted by Certified Senior IT Professionals working in today's prospering companies and data centers all over the world! The E20-326 Practice Test covers all the exam topics and objectives and will prepare you for success quickly and efficiently. The E20-326 exam is very challenging, but with our E20-326 questions and answers practice exam, you can feel confident in obtaining your success on the E20-326 exam on your FIRST TRY! 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Let us help you climb that ladder of success and pass your E20-326 now! E20-326 QUESTION: 1 You are designing a new disaster recovery solution with VMAX arrays. During the initial project kick-off meeting, the customer reports their environment can tolerate five minutes or less of data recovery following a disaster but have not yet determined the maximum allowable downtime for their applications. The customer asks which remote replication methods you recommend for their environment. What do you recommend? A. Defer making a recommendation until the application RTO is known. B. Recommend the disaster recovery solution as described in the Sales Order. C. Defer making a recommendation until the application RPO in known. D. Recommend the disaster recovery solution described in the Statement of Work. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=1 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 2 You are designing a new disaster recovery solution with VMAX arrays. During the initial project kick-off meeting, the customer reports the maximum allowable downtime for their applications is ninety minutes, but they have not yet determined how much data recovery following a disaster their environment can tolerate. The customer asks which remote replication method you recommend for their environment. What do you recommend? A. Defer making a recommendation until the application RPO in known. B. Recommend the disaster recovery solution as described in the Sales Order. C. Defer making a recommendation until the application RTO is known. D. Recommend the disaster recovery solution described in the Statement of Work. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=2 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 3 Prior to starting an implementation, which tool should be used to automate the data collection on a Windows host? A. EMCGrab B. EMCReports C. E-Lab Advisor D. Change Tracker Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=3 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 4 Prior to starting an implementation, which tool should be used to automate the data collection on a UNIX host? A. EMCGrab B. EMCReports C. E-Lab Advisor D. Change Tracker Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=4 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 5 A customer plans to migrate existing AIX and Windows hosts as well as Mainframe z/OS LPARs to a new VMAX array. Performance data is needed to design the VMAX volumes configuration layout. Which host performance data do you request from the customer? A. STP, SAR, WRKDSKSTS B. SAR, Perfmon, WRKDSKSTS C. IOSTAT, Perfmon, SMF/CMF D. IOSTAT, SAR, SMF/CMF Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=5 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 6 A customer will migrate existing AIX, HP-UX and Windows hosts from a DMX-3 to a new VMAX array. You need performance data from the existing array to design to the new VMAX volumes configuration layout. Which tools can be used to collect Symmetrix array performance data? A. ControlCenter Performance Manager and STP Collector B. EMC Workload Generator and STP Navigator C. Storage Configuration Advisor and STP Collector D. ControlCenter Performance Manager and SymmMerge Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=6 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 7 A customer plans to migrate existing AIX, HP-UX and IBM iSeries hosts to a new VMAX array. Performance data is needed to design the VMAX volumes configuration layout. What host performance data do you request from the customer? A. IOSTAT, SAR, WRKDSKSTS B. STP, Perfmon, SMF/CMF C. IOSTAT, STP, WRKDSKSTS D. Perfmon, SAR, SMF/CMF Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=7 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 8 A major telecommunications operator is planning to consolidate multiple mid-tier storage arrays to a single Symmetrix VMAX solution. Their existing environment includes IBM AIX servers, HP-UX Servers and Windows 2003 Servers. When documenting the existing Server environment, which command can be used on the AIX Servers, to list the software modules installed? A. pkginfo B. lslpp C. swlist D. cfgmgr Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=8 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 9 A major telecommunications operator is planning to consolidate multiple mid-tier storage arrays to a single Symmetrix VMAX solution. Their existing environment includes IBM AIX servers, HP-UX Servers and Windows 2003 Servers. When documenting the existing Server environment, which command can be used on the HP-UX Servers, to list the software modules installed? A. swlist B. lslpp C. pkginfo D. pkgchk Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=9 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 10 A customer is interested in utilizing TimeFinder/Snap to generate a backup copy of an application every six hours. In order for you to calculate the SAVE Pool requirements you will need to run Change Tracker. To which value should you set the reset interval length for DeltaMark? A. 21600 B. 10800 C. 86400 D. 32400 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=10 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 11 A customer is interested in utilizing SRDF/AR to generate a remote copy of an application with an RPO of six hours. In order for you to calculate the bandwidth requirements you will need to run Change Tracker. To which should you set the reset interval length for DeltaMark? A. 21600 B. 86400 C. 32400 D. 10800 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=11 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 12 A TimeFinder/Snap of production data must be recreated in a four hour cycle throughout the day. Which change tracker report will provide the best data for modeling a solution for the twenty-four hour period? A. Delta report reset every four hours B. SUM report over four hours C. Delta report reset every twenty four hours D. SUM report over twenty four hours Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=12 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 13 A TimeFinder/Snap of production data must be recreated in a two hour cycle throughout the day. Which change tracker report will provide the best data for modeling a solution for the twenty-four hour period? A. Delta report reset every two hours B. SUM report over two hours C. Delta report reset every twenty four hours D. SUM report over twenty four hours Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=13 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 14 You are designing a new VMAX array. The customer requires high performance for their random write-intensive application. Which RAID protection should you recommend? A. RAID-5 B. RAID-6 C. RAID-1 D. RAID-S Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=14 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 15 You are designing a new VMAX array. The customer s primary concern is maximizing capacity available to the host. What RAID protection should you recommend? A. RAID-5 (7+1) B. RAID-6 (6+2) C. RAID-1/0 D. RAID-5 (3+1) Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=15 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 16 What is a best practice when configuring a Symmetrix VMAX for optimal performance and cost? A. Different drive types are mixed and spread throughout the array. B. Dedicated engines have appropriate drive types to meet application needs. C. A dedicated array with Enterprise Flash Drives (EFD). D. A dedicated array based upon application requirement. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=16 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 17 You are proposing a new VMAX array with FAST VP. The customer reports their application needs a small amount of EFD capacity and asks whether 200 GB EFDs or 400 GB EFDs would provide better overall performance. Which drive size do you recommend and why? A. 400 GB EFDs. They support higher IOPS than 200 GB EFDs. B. 200 GB EFDs. They support higher I/O density than 400 GB EFDs. C. 400 GB EFDs. They support higher I/O density than 200 GB EFDs. D. 200 GB EFDs. They support higher IOPS than 400 GB EFDs. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=17 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 18 A Symmetrix VMAX has been configured with Dynamic Cache Partitions. What is a criterion that must be met for a cache slot to be eligible for donation? A. The fall through time must be greater than the donation age B. The fall through time must be less than the donation age C. The cache slot must belong to a static partition D. There must be available cache slots in the default partition Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=18 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 19 A Symmetrix VMAX hosts four applications. Each application is assigned a named dynamic cache partition. Two of the partitions are static and two are flexible. The write pending limit for each partition is set to 60%. What will happen if an application running in a flexible partition reaches the write pending limit set for that partition? A. Host write activity to that partition will be throttled B. Cache will be borrowed from the other flexible partition C. Cache will be borrowed from the default partition D. The write pending limit of the partition will be raised until it reaches 80% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=19 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 20 A Symmetrix VMAX hosts four applications. Each application is assigned a named dynamic cache partition. Two of the partitions are static and two are flexible. The write pending limit for each partition is set to 60%. What will happen if an application running in a static partition reaches the write pending limit set for that partition? A. Cache will be borrowed from a flexible partition B. Cache will be borrowed from the default partition C. Host write activity to that partition will be throttled D. The write pending limit of the partition will be raised until it reaches 80% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=20 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 21 A customer is using virtual provisioning on a Symmetrix VMAX which is being shared for Production and non-production workloads. What can be used to separate the different workloads? A. Dynamic Cache Partitioning B. Symmetrix Priority Controls C. Write Pending Limit D. FAST VP Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=21 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 22 You are designing a new VMAX implementation. All applications will share physical drives and participate in SRDF/S replication. The customer has two high I/O applications used for OLTP and a several low I/O applications used for testing. The customer wants to ensure the high I/O applications take precedence over the low I/O applications on the VMAX array. What do you recommend? A. Implement Symmetrix Priority Controls. B. Configure striped metavolumes. C. Implement SRDF Consistency Groups. D. Configure concatenated metavolumes. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=22 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 23 Which condition results in effective prioritization by Symmetrix Priority Controls (SPC)? A. Application classes are isolated on different disks/tiers. B. Different application classes share the same physical disks. C. Applications share the same physical disks and have different IO profiles. D. Applications share the same physical disks and are active at different times, Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=23 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 24 A storage administrator receives a warning message that one of the thin pools in the Symmetrix is low on storage space. The pool contains a large number of thin devices that have been fully preallocated but have small amounts of used space. What is the least disruptive and most cost effective way to make more thin pool space available? A. Run zero space reclamation on the thin devices B. Add more data devices to the thin pool C. Unbind the underutilized thin devices from the pool D. Rebalance the pool Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=24 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 25 What can happen if an over-subscribed thin pool becomes full? A. writes to unallocated extents on TDEV s fail and an I/O error is returned. If the host is booting from SAN, this may also result in a server hang condition. B. writes to unallocated extents on TDEV s continue within cache and the virtual pool is automatically expanded to the needed level. C. writes to unallocated extents on TDEV s stay in a queued state until the storage administrator can assign additional capacity. D. writes to unallocated extents on TDEV s continue within cache and the virtual pool is not automatically expanded to the needed level. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=25 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 26 What can be used to monitor free space in a thin pool on a Symmetrix VMAX? A. The Control Center Host Agent. B. The Replication Manager IRCCD daemon. C. Tier Advisor. D. The event daemon storeventd. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=26 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 27 What is the size of a thin device extent in a Symmetrix VMAX? A. 768 KB B. 512 KB C. 64 KB D. 1024 KB Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=27 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 28 What are the main components that make up a virtual provisioning environment? A. TDEVs, TDATs and a Thin Pool. B. DRVs, CDEVs and a storage pool. C. Striped Metas, VDEVs and a Thin Pool. D. Masking Views, VDEVs and BCVs. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=28 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 29 What is one of the benefits of virtual provisioning? A. eliminates the need for an auto-provisioned port group. B. wide striping distributes I/O across physical disks. C. provides newer commands such as the symcfg command. D. reduces return on investment. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=29 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 30 What is considered to be a thin unfriendly environment? A. an environment that makes use of filesystems that append data instead of re-using free space. B. an environment that contains databases that make use of the auto-extend capability. C. an environment that is used for media and document repositories. D. an environment that is used by Test Development and Quality Assurance. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=30 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 31 A customer wants to implement virtual provisioning on a new VMAX array and is concerned about efficient use of available storage and application performance. The VMAX environment will have file system, database and document repository hosts. The customer reports the system hosts append data to the file system, the database hosts use autoextend and the document repository hosts have low performance and growth requirements. How should you recommend the host storage be provisioned on the VMAX array? A. File system storage on traditionally provisioned volumes; database and document repository storage on thin volumes. B. File system, database and document repository storage on thin volumes. C. File system and database storage on thin volumes; document repository storage on traditionally provisioned volumes. D. File system, database and document repository storage on traditionally provisioned volumes. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=31 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 32 An SRDF/S customer has implemented FAST VP at R1 and R2 sites. What will happen to a thin R2 device when a thin R1 device extent is promoted? A. The corresponding extent on the R2 device will be promoted as long as there is storage space available in the higher tier B. Nothing. Promotions on the source do not affect the target C. The corresponding extent on the R2 device will be promoted simultaneously only if the FAST VP policy allows it D. The corresponding extent on the R2 device will be promoted if the target Symmetrix is not too busy Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=32 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 33 A Symmetrix VMAX is configured with FAST DP. It contains three tiers of storage: 1. 200 GB RAID 5 (3+1) EFD 2. 300 GB RAID 1 15K RPM Fibre Channel 3. 1 TB RAID 6 (6+2) 7200 RPM SATA The storage administrator would like to charge each department that uses the VMAX for the amount and class of storage they use. Which FAST policy would best lend itself to the chargeback system? A. Tier 1: 10% Tier 2: 60% Tier 3: 30% B. Tier 1: 50% Tier 2: 50% Tier 3: 50% C. Tier 1: 20% Tier 2: 40% Tier 3: 50% D. Tier 1: 100% Tier 2: 100% Tier 3: 100% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=33 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 34 You are implementing a FAST VP solution for a customer and want to start with a conservative FAST VP relocation rate. What would be the recommended value for the relocation rate? A. 4 B. 7 C. 10 D. 1 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=34 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 35 What is a valid FAST VP policy that would be recommended by Tier Advisor? A. EFD 400GB RAID 5 (3+1) -30% FC 15K 300GB RAID 1 - 30% SATA 7200 1TB RAID 6 (6+2) - 30% B. EFD 400GB RAID 5 (3+1) -30% FC 15K 300GB RAID 1 - 30% FC 15K 400 GB RAID 5 (3+1) - 20% SATA 7200 1TB RAID 6 (6+2) - 30% C. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 50% SATA 7200 1TB RAID 6 (6+2) - 40% D. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 100% SATA 7200 1TB RAID 6 (6+2) - 100% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=35 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 36 What is a valid FAST policy? A. EFD 400GB RAID 5 (3+1) -30% FC 15K 300GB RAID 1 - 30% SATA 7200 1TB RAID 6 (6+2) - 30% B. EFD 400GB RAID 5 (3+1) -30% FC 15K 300GB RAID 1 - 30% FC 15K 400 GB RAID 5 (3+1) - 20% SATA 7200 1TB RAID 6 (6+2) - 30% C. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 50% SATA 7200 1TB RAID 6 (6+2) - 20% D. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 100% SATA 7200 1TB RAID 6 (6+2) - 100% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=36 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 37 You are designing tiered storage for a new 2-engine VMAX. What is the minimum number of Flash drives you should recommend not including hot spares? A. 8 B. 32 C. 24 D. 16 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=37 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 38 Which FAST VP control parameter defines the amount of time FAST VP should wait after a thin device is brought under FAST VP control before performing a data movement? A. Initial Analysis Period B. Workload Analysis Period C. Pool Reserved Capacity D. Fast VP Relocation Rate Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=38 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 39 Which FAST VP control parameter specifies the maximum amount of time over which long term activity rates will decay? A. Workload Analysis Period B. Initial Analysis Period C. Pool Reserved Capacity D. FAST VP Relocation Rate Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=39 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 40 What is best practice for binding thin devices in a FAST VP environment? A. Bind all devices to a thin pool within the second highest tier. B. Bind all devices to a thin pool within the lowest tier available. C. Bind all devices to a pool within the highest tier available. D. Bind thin devices only to pools that show sufficient Pool Reserved Capacity. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=40 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 41 Refer to the exhibit. emc&c=E20-326&q=1 What is a characteristic of the proposed configuration recommended by TierAdvisor? A. It will consume 6% less storage than the current configuration B. It will have 49% better response time than the current configuration C. It will cost 2% less than the current configuration D. It is unsuitable for use with FAST because the tier allocations add up to 100% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=41 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 42 Refer to the exhibit emc&c=E20-326&q=1 What is a characteristic of the proposed configuration recommended by TierAdvisor? A. It will use 6% less storage capacity than the current configuration B. It will have 51% better response time than the current configuration C. It will cost 2% more than the current configuration D. For compatibility with FAST the tier allocations must add up to more than 100% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=42 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 43 By default which discounted rate does Tier Advisor apply to software using SATA storage? A. 50% B. 40% C. 60% D. 30% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=43 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 44 Refer to the Exhibit. emc&c=E20-326&q=1 The illustration shows the workload characteristics of a DMX which is due to be upgraded to a VMAX. Which conclusion can you draw? A. Front-end IOs outnumber the back-end IOs, because some IOs are satisfied in cache B. Front-end IOs outnumber the back-end IOs, because the devices involved are R2 targets C. Front-end and back-end IOs are unrelated to each other D. Front-end IOs outnumber the back-end IOs, because there were a lot of clone operations being performed Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=44 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 45 What is the minimum recommended amount of CLARiiON performance data that should be used for Tier Advisor analysis? A. 4 hours B. 5 hours C. 1 day D. 1 week Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=45 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 46 What is the functional description for Tier Advisor? A. An interactive performance modeling tool. B. A peak performance analysis tool. C. A tool that helps calculate DA utilization. D. A tool that recommends the right number of VMAX engines. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=46 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 47 You are analyzing performance data from a Symmetrix DMX populated with Fibre Channel (FC) drives with the intention of upgrading a customer to a VMAX. An analysis of the data with Tier Advisor yields a recommendation that the storage be allocated in 3 tiers, EFD, FC and SATA. What is a valid Tier advisor recommendation? A. 10% EFD, 75% FC and 25% SATA B. 100% EFD, 100% FC and 100% SATA C. 5% EFD, 90% FC, 20% SATA D. 3% EFD, 70% FC and 27% SATA Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=47 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 48 Refer to the exhibit. emc&c=E20-326&q=1 What would you see if you place your cursor on the bottom left of the vertical axis (red section) of the graph in Tier Advisor? A. Recommended capacity and throughput utilization for the EFD tier B. Recommended capacity and throughput utilization for the SATA tier C. Recommended capacity and throughput utilization for the FC tier D. Recommended capacity and throughput utilization for the entire configuration Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=48 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 49 Refer to the exhibit. emc&c=E20-326&q=1 What would you see if you place your cursor on the bottom left of the horizontal axis (green section) of the graph in Tier Advisor? A. Recommended capacity and throughput utilization for the EFD tier B. Recommended capacity and throughput utilization for the SATA tier C. Recommended capacity and throughput utilization for the FC tier D. Recommended capacity and throughput utilization for the entire configuration Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=49 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 50 What are the generally recommended RAID protections for Enterprise Flash Drives (EFD), Fibre Channel (FC) and Serial Advanced Technology Attachment (SATA) tiers? A. �EFD - RAID 5 (3+1) �FC - RAID 1 �SATA - RAID 6(6+2) B. �EFD - RAID 1 �FC - RAID 5 (3+1) �SATA RAID 6 (6+2) C. �EFD - RAID 6 (6+2) �FC - RAID 1 �SATA RAID 5 (3+1) D. �EFD - RAID 6 (6+2) �FC - RAID 5 (3+1) �SATA RAID 1 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=50 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 51 A customer wants to protect production data using local and remote replication on a pair of VMAX arrays located 100 km apart. Both VMAX arrays are fully configured with virtually provisioned thin volumes. The customer has a near zero Recovery Point Objective (RPO) and wants to replicate the production volumes to the remote array, while maintaining a separate backup copy of the production data on the local array. Which replication options do you recommend they implement? A. TimeFinder/Snap and SRDF/A. B. TimeFinder/Clone and SRDF/S. C. TimeFinder/Mirror and SRDF/S. D. TimeFinder/Clone and SRDF/DM. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=51 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 52 A customer wants to protect production data using local and remote replication on a pair of VMAX arrays located 500 km apart. Both VMAX arrays are fully configured with virtually provisioned thin volumes. The customer has a Recovery Point Objective (RPO) of thirty minutes and wants to replicate the production volumes to the remote array while maintaining a separate backup copy on the local array. Which replication options do you recommend they implement? A. TimeFinder/Clone and SRDF/A. B. TimeFinder/Clone and SRDF/S. C. TimeFinder/Mirror and SRDF/A. D. TimeFinder/Snap and SRDF/S. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=52 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 53 Your customer is interested in using Timefinder/Snap. You have determined there needs to be fifty save devices to handle the change rate for 125 virtual devices. The Save devices and the virtual devices are the same size. What should be recommended if source volume performance is a consideration? A. Recommend using Timefinder/Clone B. Spread the Save devices across as many DAs and disks as possible C. Recommend using RAID6 for the Save devices D. Allocate enough disks to handle the change rate Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=53 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 54 When using Timefinder/SNAP, what is true of Save devices? A. RAID6 is the preferred protection for Save devices. B. Save devices store the original track from the source device which is copied on first access. C. Each Save device is recommended to be equal to or less than the largest VDEV. D. RPQ is required to use RAID1 protection on Save devices. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=54 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 55 Changes were made to a TimeFinder Clone after activation. The changes need to be propagated back to the source. Which method should be used? A. Incremental restore B. Incremental establish C. Full restore D. Full establish Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=55 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 56 A customer has taken four snaps of a TimeFinder/Snap source device at 10:00 a.m., 1:00 p.m., 3:00 p.m. and 5:00 p.m. A restore operation is performed at 8:00 p.m. from the 5:00 p.m. snap session. What is the first step needed to create a snap from the same source device at 9:00 p.m.? A. Terminate the restored session B. Terminate all snap sessions C. Terminate the 5pm session D. Create a 9pm snap session Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=56 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 57 When terminating a TimeFinder/Snap session, what is the effect on the ability to access the data on the VDEV? A. A host mount is required to access the data on the virtual device. B. The hold on the target device is removed while the data remains available. C. The data is available to the host if a mount is issued with the force flag. D. The data is no longer available on the virtual device. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=57 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 58 What describes the difference between Asynchronous and Synchronous Copy on First Write (COFW)? A. Asynchronous mode results in fewer disk operations during COFW. B. Asynchronous results in a shorter host response time as there is no COFW penalty compared to Synchronous. C. Asynchronous mode results in more disk operations during COFW. D. Asynchronous and Synchronous mode result in similar host response time as both suffer the COFW penalty. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=58 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 59 An existing TimeFinder customer migrated from a DMX-3 running Enginuity 5771 to a new VMAX array. They ask you to explain how the TimeFinder/Clone Copy on First Write (COFW) mechanism on the new VMAX array differs from their DMX-3 array. What do you tell the customer? A. The VMAX array uses asynchronous COFW and the DMX-3 array uses synchronous COFW. B. Both the VMAX and DMX-3 arrays use synchronous COFW. C. The VMAX array uses synchronous COFW and the DMX-3 array uses asynchronous COFW. D. Both the VMAX and DMX-3 array use asynchronous COFW. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=59 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 60 An existing TimeFinder customer migrated from a DMX-3 running Enginuity 5771 to a new VMAX array. A colleague advised them TimeFinder/Clone performance would improve on the VMAX due to changes to the Copy on First Write (COFW) mechanism. The customer asks you to explain how the COFW mechanism changed on the VMAX. What do you advise the customer? A. Uses asynchronous copy on first write (ACOFW), which has no COFW penalty. B. Uses synchronous copy on first write (COFW), which has no COFW penalty. C. Uses asynchronous copy on first write (ACOFW), which holds protected writes in cache. D. Uses synchronous copy on first write (COFW), which completes protected writes in cache. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=60 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 61 A customer has a pair of VMAX arrays configured to replicate thin devices at one site to thin devices at another site using SRDF/A. The customer wants to implement TimeFinder/Clone replication of the R2 device on the target array and asks you to confirm this is a supported configuration. What do you advise the customer? A. Yes, it is supported. B. It is supported only if composite groups are used. C. It is supported only if the precopy option is used. D. No, it is not supported. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=61 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 62 A customer has a pair of VMAX arrays configured to replicate thin devices at one site to thin devices at another site using SRDF/A. The customer wants to implement TimeFinder/Clone replication of the R1 device on the source array and asks you to confirm this is a supported configuration. What do you advise the customer? A. Yes, it is supported. B. It is supported only if the precopy option is used. C. No, it is not supported. D. It is supported only if composite groups are used. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=62 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 63 When does the ACOFW behavior apply in a TimeFinder/Snap environment? A. Writes to protected tracks on the source device B. Writes to protected tracks on the virtual device C. All writes to the source device D. All writes to the virtual device Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=63 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 64 What is the maximum data change rate for which you would recommend TimeFinder/Snap over TimeFinder/Clone as a local replication solution? A. 10% B. 50% C. 70% D. 30% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=64 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 65 How is Open Replicator licensed? A. Licenses are per-system and are priced by the raw capacity of the array. This is required for the control array only. B. Licenses are per host and are priced based on an agent license that is entered via command line. C. Licenses are per-system and are priced by the raw capacity of the array. This is required for both the remote and control arrays. D. Licenses are per host and are priced based on the amount on the total amount of storage capacity that is mapped to an FA port. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=65 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 66 What are risk factors you should consider when designing an Open Replicator solution? A. FA processors utilization, switch and director workloads and ISL traffic. B. Slow host performance, poor Open Replicator installation and link size. C. Large Operating System partitions, large TDAT s and fast host adapter speeds. D. Low latency, FA port redundancy and primary array workloads. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=66 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 67 A Customer would like to use Open Replicator to periodically push their production data to a remote array. Which solution will minimize performance impact to the production devices? A. Cold push using production devices B. Cold push using TimeFinder/Clone replica devices C. Hot push with donor update using production devices D. Hot push using TimeFinder/Snap replica devices Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=67 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 68 A customer is migrating from a DMX to a VMAX. To minimize the outage window Open Replicator hot pull has been selected to perform the migration. Which Open Replicator license is required and which array should it be applied to? A. Open Replicator/LM on the VMAX. B. Open Replicator/LM on the DMX. C. Open Replicator/DM on the VMAX. D. Open Replicator/DM on the DMX. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=68 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 69 A customer has purchased a new VMAX and is in the process of setting up Open Replicator for a migration. What is a consideration for device pairing for the migration? A. New devices must be of the same RAID type. B. New Device must be the same size or smaller. C. New Device must be of the same Meta Configuration. D. New device must be the same size or larger. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=69 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 70 A Symmetrix Customer has an application that runs 24 hours a day, 7 days a week and 365 days a year. They would like to replicate the application data simultaneously to four branch offices on a nightly basis. The branch offices have EMC VNX arrays. Which solution would you recommend? A. Use TimeFinder/Clone to replicate the production application. Then use Open Replicator cold push to replicate the clones. B. Use Open Replicator cold push to replicate the production devices C. Use Open Replicator hot push to replicate the production devices. D. Use TimeFinder/Snap to replicate the production application. Then use Open Replicator hot push to replicate the VDEVs. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=70 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 71 Which operations are allowed by Open Replicator/LM? A. Online pull only B. Offline pull only C. Online push only D. Offline push only Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=71 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 72 Which operations are allowed by Open Replicator/DM? A. All functions except offline pull B. All functions except online push C. All functions except online pull D. All functions except offline push Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=72 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 73 Which information is needed when designing an Open Replicator solution? A. Remote array serial number and devices, control and remote front end ports. B. Remote array serial number, Open Replicator control host, SRDF device pairing file. C. TDATs to replicate, remote array serial number, Tier Advisor. D. SYMMERGE, TDATs to replicate, Open Replicator software. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=73 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 74 Using Open replicator, when are the protection bitmap flags set to "1" for each track on the control device? A. When the session is created. B. When the session is terminated. C. When the session is activated. D. When the session is queried. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=74 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 75 A customer wants to migrate a database using Open Replicator. They have decided to do a hot pull operation to minimize the outage window. What should the customer do to prevent data corruption? A. Mask the control devices to the host so both devices can be updated. B. Unmount the remote device. C. Wait to zone control devices until data is copied. D. Mask the remote devices after data is copied Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=75 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 76 Using Open replicator, when are the protection bitmap flags set to "0" on the control device? A. When each track is copied. B. When the session is terminated. C. When the session is activated. D. When the session is created. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=76 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 77 A customer needs to have copies of their production database accessible to their test and development team. The production data resides on a VMAX and test and development resides on a CLARiiON. Which tool is appropriate for data distribution? A. Open Replicator B. TimeFinder C. SRDF D. Open Migrator Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=77 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 78 A customer needs to have copies of their production database accessible to backup and recovery team. The production data resides on a VMAX and backup and recovery resides on a CLARiiON. Which tool is appropriate for meeting their goal? A. TimeFinder B. SRDF C. Open Replicator D. MirrorView Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=78 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 79 Where is the pace set when using Open Replicator? A. At the session level. B. On the Host HBA. C. On the Switch Port. D. At the Symmetrix FA port. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=79 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 80 How many additional SDDF sessions are used for an Open Replicator incremental push? A. 1 B. 2 C. 3 D. 4 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=80 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 81 You are designing an SRDF/S over Fibre Channel solution. Data centers are 50 kilometers apart. 4 Gb/s FC links are in place. How many buffer to buffer credits would you recommend in order to maximize the utilization of the links? A. 25 B. 50 C. 300 D. 100 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=81 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 82 You are designing an SRDF/S over Fibre Channel solution. Data centers are 30 kilometers apart. 2 Gb/s FC links are in place. How many buffer to buffer credits would you recommend in order to maximize the utilization of the links? A. 30 B. 15 C. 60 D. 180 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=82 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 83 What is the EMC recommended network quality for SRDF/A over GigE? A. Less than 0.1% packet loss B. Less than 0.01% packet loss C. Less than 0.25% packet loss D. Less than 1% packet loss Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=83 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 84 What is the EMC recommended network quality for SRDF/S over GigE? A. Less than 0.1% packet loss B. Less than 0.01% packet loss C. Less than 0.25% packet loss D. Less than 1% packet loss Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=84 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 85 How many buffer to buffer credits does a Symmetrix VMAX SRDF Fibre Channel port have? A. 20 B. 4 C. 7 D. 12 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=85 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 86 For which IO sizes is the SiRT feature enabled on Symmetrix VMAX arrays? A. All IO sizes B. 8 KB and lower C. 16 KB and lower D. 32 KB and lower Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=86 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 87 For which Symmetrix VMAX SRDF mode(s) is the SiRT feature used? A. SRDF/A and SRDF/S B. SRDF/A and SRDF/Adaptive Copy C. SRDF/A only D. SRDF/S only Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=87 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 88 You are designing an SRDF over GigE solution. What is a consideration to maximize TCP connection scaling? A. All GigE ports on the source array should be able to see all GigE ports on the target array B. The MTU size must be hard set in the bin file on both the source and target arrays C. Speed limit should be set on all GigE ports on both the source and target arrays D. Jumbo frames must be enabled on the all GigE ports on both the source and target arrays Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=88 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 89 What is the maximum number of wavelengths that can be multiplexed on a single optical fiber over DWDM? A. 160 B. 16 C. 32 D. 200 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=89 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 90 What is the size of a fibre channel frame? A. 2112 bytes B. 1500 bytes C. 9000 bytes D. 2148 bytes Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=90 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 91 What is the maximum number of wavelengths that can be multiplexed on a single optical fiber over CWDM? A. 16 B. 24 C. 32 D. 160 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=91 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 92 Which encoding scheme is used by 10 Gb/s fibre channel transmission? A. 64b/66b B. 8b/10b C. 16b/18b D. 32b/34b Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=92 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 93 What is the purpose of ISL trunking? A. Multi pathing B. Inter switch communication C. Traffic load balancing D. FC Routing Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=93 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 94 A customer needs to configure SRDF/S between two sites 10 km apart. The customer connected the R1 ports to fabric-A at site 1 and the R2 ports to fabric-B at site 2. The customer does not want to merge the two fabrics between sites. What is the recommended solution? A. Implement FC routing or Virtual SAN to isolate the fabric B. Implement FCIP connection to isolate the fabric C. Merge two fabrics, and zone R1 and R2 ports. D. Connect the RDF ports using DWDM or SONET. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=94 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 95 You are designing a Symmetrix VMAX SRDF/S over Fibre Channel solution. The production and remote data centers are 50 kilometers apart. What is the expected write response time delay due to latency? A. 0.5 ms B. 0.25 ms C. 1 ms D. 2 ms Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=95 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 96 You are designing a Symmetrix VMAX SRDF/S over GigE solution. The production and remote data centers are 100 kilometers apart. What is the expected write response time delay due to latency? A. 0.5 ms B. 2 ms C. 4 ms D. 1 ms Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=96 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 97 You are designing an SRDF/S solution. The workload profile is: � Total I/Os per second = 10000 � Write % = 25 � Read block size = 8 KB � Write block size = 8 KB Network bandwidth can be purchased in increments of single T3 (45 Mb/s) links. Data compression is not in use. How many T3s links would you recommend? A. 6 B. 2 C. 4 D. 8 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=97 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 98 A customer is using SRDF/S to replicate a Symmetrix VMAX at the production site to the VMAX at the DR site. The sites are connected using a dedicated T1 link and are 38 km apart. What will significantly improve the link service time between the 2 sites? A. Upgrade to a faster link. B. Decrease the number of RA ports. C. Adding cache to both VMAX arrays. D. Increase the priority of the high I/O applications on RA ports. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=98 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 99 You are designing an SRDF/S solution. The workload profile is: � Total I/Os per second = 30000 � Write % = 20 � Read block size = 4 KB � Write block size = 4 KB Network bandwidth can be purchased in increments of single OC3 (155 Mb/s) links. Data compression is not in use. How many OC3 links would you recommend? A. 1 B. 2 C. 3 D. 4 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=99 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 100 When should customers implement SRDF/S solutions? A. When they cannot afford to lose any data B. When IO response time is very critical to applications. C. When high bandwidth is required by an application. D. When an array has and abundance of cache buffer. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=100 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 101 Which factors contribute to response time elongation in an SRDF/S environment? A. Write size, Distance and Network Equipment B. IOPS, Write size and Distance C. Write/s, Distance and Network Equipment D. Read/s, Write/s and IO size Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=101 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 102 Using SRDF/S, In Enginuity 5772 and later, How many concurrent writes can a device receive? A. 6 B. 16 C. 2 D. 8 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=102 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 103 In Enginuity 5671 and earlier, how does SDRF/S behave when multiple writes to a device are received? A. Second write waits while first write is acknowledged. B. Third write waits while second write is acknowledged. C. 8 Concurrent writes are supported on a single device. D. 4 Concurrent writes are supported on a single device. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=103 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 104 An SRDF/S implementation is being designed. The RA performance limits are 3800 4k IOPS for a Fibre RF adapter. The application is doing 6000 4k IOPS with 30% writes and uses multiple volumes. How many RAs are recommended? A. 2 B. 1 C. 4 D. 6 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=104 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 105 What is the impact on response time when multiple concurrent writes to an RDF device arrive from different FA ports on a Symmetrix VMAX? A. Concurrent SRDF/S writes will not help to improve response time. B. Writes can run in parallel and response time is slightly improved. C. Writes need to be finished before new writes arrive and negatively impacts response time. D. Response time is mostly determined by the application write behavior. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=105 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 106 A customer is implementing SRDF/S for an application that generates 16000 8K IOPS with 30% writes. A single RDF port can service 1200 8K IOPS. How many RA should be recommended? A. 4 B. 6 C. 10 D. 8 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=106 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 107 A proposed SRDF/S solution was modeled with BCSD. The model assumed that the Source array had 2 RFs. The RA utilization chart shows the maximum utilization at 80%. How many RFs should be recommended to ensure a successful implementation? A. 2 B. 4 C. 3 D. 6 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=107 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 108 A proposed SRDF/S solution was modeled with BCSD. The model assumed that the Source array had 4 GigE ports. The RA utilization chart shows the maximum utilization at 70%. How many GigE ports should be recommended to ensure a successful implementation? A. 6 B. 4 C. 5 D. 8 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=108 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 109 A proposed SRDF/S solution was modeled with BCSD using host-based data. � The BCSD model assumed two engine VMAX arrays with SRDF Fibre ports. � The RA Utilization chart shows a maximum utilization of 45%. The �Volume Exceptions� table lists five devices. What should you recommend? A. Change the application layout B. Add more remote adapters C. Use three engine VMAX arrays D. Turn on software compression on the remote adapters Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=109 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 110 A proposed SRDF/S solution was modeled with BCSD using host-based data. � The BCSD model assumed two engine VMAX arrays with SRDF Fibre ports. � The Compressed Throughput chart shows that the available throughput is greater than the peak throughput. The �Volume Exceptions� table lists ten devices. What should you recommend? A. Use three engine VMAX arrays B. Provide more bandwidth C. Turn off software compression on the remote adapters D. Change the application layout Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=110 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 111 A colleague implemented cascaded SRDF for a VMAX technology refresh and site relocation activity. The colleague reports they shutdown the hosts at production Site A and copied all data to the bunker Site B VMAX. But they are unable to enable SRDF/S between Site B and remote Site C. What should you advise them? A. SRDF/S is not supported on the second leg of a cascaded SRDF implementation. B. Enable SRDF/A on the first leg and then enable SRDF/S on the second leg. C. Suspend SRDF/S on the first leg and then enable SRDF/S on the second leg. D. The Site B devices must be converted to use concurrent SRDF. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=111 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 112 Refer to the exhibit. emc&c=E20-326&q=1 A customer has a legacy DMX-3 at Site 1, where a BCV-R1 copy is taken of the production volumes and then replicated to another DMX-3 at Site 2 via SRDF/A. The customer will replace the legacy DMX-3 arrays at both sites with new VMAX arrays. The customer wants to enable concurrent SRDF on the Site 1 SRDF source volumes, to maintain disaster restart protection between the legacy DMX-3 arrays and migrate the legacy DMX-3 at Site 1 to the new VMAX array. What should you advise the customer? A. Concurrent SRDF migration is not supported for this configuration. B. Enable concurrent SRDF using SRDF/A from the BCV-R1. C. Host level migration is the only migration option for this configuration. D. Enable concurrent SRDF using SRDF/S from the BCV-R1. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=112 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 113 What is a feature of Delta Set Extension pools? A. An SRDF/A group can be associated with different pools, regardless of protection or emulation type. B. DSE pools can be shared between multiple SRDF/A groups. C. DSE Pools are only required at the R1 side. D. RAID5 with 15krpm disks is recommended for optimal performance of a DSE pool. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=113 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 114 Using the default the 5875 SRDF/A cycle time, what is the recovery point objective in seconds? A. 60 B. 30 C. 90 D. 120 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=114 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 115 When performing a consistent mode change from SRDF/A to SRDF/S, how many cycles does this process take? A. After two cycle switches B. After one cycle switch C. Immediately D. After the cycle time expires Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=115 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 116 What is supported for the second leg (R21 -> R2) of an SRDF Extended Distance Protection (EDP) configuration? A. Adaptive copy disk mode B. SRDF/Synchronous C. SRDF/AR single hop D. Adaptive copy write pending mode Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=116 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 117 An SRDF configuration is running in SRDF/A mode. The customer s decision to switch from SRDF/A to SRDF/S is rejected. At which percentage of write cache in use at the SRDF R2 site will this occur? A. 50% B. 100% C. 80% D. 90% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=117 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 118 When designing SRDF/A, what is the recommended configuration for the DSE pool? A. RAID-5 devices spread out over few disks B. RAID-1 devices on dedicated disks C. RAID-6 devices on dedicated disks D. RAID-1 devices spread out over many disks Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=118 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 119 What is a supported mode for disk based Cascaded SRDF? A. First leg - SRDF/S, Second leg - SRDF/A B. First leg - SRDF/A, Second leg - SRDF/A C. First leg - SRDF/S, Second leg - SRDF Adaptive Copy Write Pending Mode D. First leg - SRDF/S, Second leg - SRDF/S Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=119 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 120 A Symmetrix VMAX SRDF/A customer is planning to implement DSE. What are the recommended DA and RA utilization levels before implementing DSE? A. Less than 50% B. Less than 16% C. Less than 25% D. Less than 70% Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=120 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 121 A customer is facing intermittent outages on their SRDF/A link. Typically, an outage does not last for more than 5 minutes. The storage administrator is planning to configure transmit idle along with the DSE. Applications on the production VMAX generate approximately 1500 write operations every second. Assuming that all writes are 128KB in size, how much disk space is required in the DSE pool? A. 45GB B. 55GB C. 65GB D. 80GB Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=121 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 122 Which SRDF/A feature is recommended for improving resiliency from link outages? A. Delta Set Extension B. Increased cache size C. Link Limbo Timer D. Write Pacing Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=122 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 123 You have been working with a customer on a new SRDF/A design and need to validate the configuration using host data. Which tool do you use? A. BCSD B. SymmMerge C. E-lab Advisor D. Tier Advisor Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=123 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 124 Refer to the exhibit. emc&c=E20-326&q=1 You have used BCSD to model an SRDF/A solution. Based on the SRDF/A risk analysis shown what are your recommendations? A. Provide more bandwidth and cache. B. Ensure that the SRDF devices on the source and target arrays use the same protection. Provide more bandwidth. C. Ensure that the SRDF devices on the source and target arrays reside on disks with the same RPM. Provide more remote adapters. D. Provide more remote adapters. Upgrade both arrays to Symmetrix VMAX. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=124 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 125 Refer to the exhibit. emc&c=E20-326&q=1 You have used BCSD to model an SRDF/A solution. Based on the SRDF/A risk analysis shown what are your recommendations? A. Ensure that the SRDF devices on the source and target arrays use the same protection and reside on disks with the same RPM. Provide more remote adapters. B. Provide more bandwidth. Upgrade both arrays to Symmetrix VMAX. C. Ensure that the SRDF devices on the source and target arrays use the same protection and reside on disks with the same RPM. Upgrade both arrays to Symmetrix VMAX. D. Provide more bandwidth and more remote adapters. Upgrade both arrays to Symmetrix VMAX. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=125 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 126 You have been working with a customer on a new SRDF/A design and need to validate the configuration using Symmetrix data. Which tool do you use? A. SymmMerge B. Tier Advisor C. E-lab Advisor D. Analyzer Helper Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=126 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 127 A customer has a pair of VMAX arrays configured to replicate thin devices at one site to thin devices at another site using SRDF/A. The customer wants to implement TimeFinder/Snap replication of the R2 device on the target array and asks you to confirm this is a supported configuration. What do you advise the customer? A. No, it is not supported. B. It is supported only if the precopy option is used. C. Yes, it is supported. D. It is supported only if composite groups are used. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=127 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 128 Which TimeFinder feature allows you to use TimeFinder/Mirror commands to perform operations on RAID 6 protected BCVs? A. TimeFinder/Clone emulation mode B. TimeFinder/Mirror compatibility mode C. TimeFinder/Clone compatibility mode D. Symmetrix Differential Data Facility Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=128 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 129 How many SDDF sessions can each Logical Volume support? A. 16 B. 8 C. 32 D. 64 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=129 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 130 What type of configuration change takes a backend device lock on Symmetrix VMAX? A. Device Masking B. Changing disk types including physical groups C. Deletion of disks in a new configuration D. Changing the FA port flag setting Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=130 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 131 The SiRT featured is enabled on the RA in an SRDF/S configuration. When does the host receive the acknowledgement of a write? A. IO is written to the cache at the R2 site and acknowledgement is received by the R1 site from R2 site. B. IO is written at R1 site cache and is sent to the R2 site. C. IO is written to R2 site cache but not acknowledged yet. D. Immediately after the IO is written to R1 cache. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=131 ------------------------------------------------------------------------------------------------------------------------------------- QUESTION: 132 A customer is planning a Tech Refresh. The proposed migration will make use of Open Replicator Hot Pull. Which Open Replicator Hot Pull feature allows the customer to minimize the possibility of data loss during the migration? A. Donor Update B. Symmetrix Differential Data Facility C. Protection Bitmap D. Symmetrix Track Table Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=E20-326&qno=132 ------------------------------------------------------------------------------------------------------------------------------------- TwPass Certification Exam Features; - TwPass offers over 2500 Certification exams for professionals. More than 98,800 Satisfied Customers Worldwide. Average 99.8% Success Rate. Over 120 Global Certification Vendors Covered. Services of Professional & Certified Experts available via support. Free 90 days updates to match real exam scenarios. Instant Download Access! No Setup required. Price as low as $19, which is 80% more cost effective than others. Verified answers researched by industry experts. Study Material updated on regular basis. 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