5142-xse Rackmount Tape Subsystem User Guide

Transcript

TapeLabs P/N 5-01-1056-A Tandem P/N 420012-001 Tandem Models 5142-1SE and 5142-2SE Rackmount 4mm DDS-3 Tape Drive Subsystems User Guide 5142-1SE Tape Drive Subsystem 5142-2SE Tape Drive Subsystem Tape Laboratories, Inc. 3753 Howard Hughes Parkway, Suite 200 Las Vegas, NV 89109 1-800-442-0303 © 1998 Tape Laboratories, Inc. Tape Laboratories, Inc. 3753 Howard Hughes Parkway, Suite 200 Las Vegas, NV 89109 Phone: 1-800-442-0303 © 1998 Tape Laboratories, Inc. All rights reserved No part of this document may be copied in any form or by any means without prior written consent of Tape Laboratories, Inc. EPROMs used in the products described herein contain firmware that is copyrighted by and shall remain the property of Tape Laboratories, Inc. All drawings, schematics and artwork used in the manufacture of the products described herein are copyrighted. Reproduction of said drawings, schematics and artwork or manufacture of said products without written consent of Tape Laboratories Incorporated is absolutely prohibited. Printed in U.S.A Tandem 5142-xSE Rackmount Tape Subsystems User Guide ii i List of Acronyms ANSI BOT CPU ECC FRU LAN LCD LED MFC POST SCSI American National Standard Institute Beginning of Tape Central Processing Unit Error Correction Code Field Replacement Unit Local Area Network Liquid Crystal Display Light Emitting Diode Multifunction Controller Power-On Self Test Small Computer Systems Interface Tandem 5142-xSE Rackmount Tape Subsystems User Guide iii ii Terminology Used in This Manual Emulator The fast SCSI bridge between the host and the tape drive that provides intelligence to execute commands to the tape drive and manipulate data for display on the LCD. Host Computer or platform that contains the tape controller (also known as SCSI initiator). Initiator A SCSI device that initiates the SCSI protocol to control one or many target devices. Subsystem Enclosure incorporating an interface to the host through the SCSI bridge board, tape drive, power supply and cooling fan. Target Receiver of the SCSI commands sent by an initiator. Target peripheral devices include tape drives, tape drive robotics, disk drives, optical scanners, etc…. Tandem 5142-xSE Rackmount Tape Subsystems User Guide iv iii Safety Summary Observe the following safety precautions during installation, operation and maintenance. Warning!!! Keep away from live circuits. Do not connect or disconnect the tape drive subsystem or make adjustments inside the equipment when the unit's power cord is on. Always disconnect the power cord before removing the cover or touching any internal components. FCC Regulations This equipment generates, uses and can radiate radio frequency energy. If not installed and used in accordance with this instruction manual, this equipment may cause interference with radio communications. Said equipment has been designed, tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which cause the user must take whatever measures, at the owner's expense, to correct this interference. CAUTION Any changes or modifications to the equipment by the user not expressly approved by the grantee or manufacturer could void user's authority to operate such equipment. Tandem 5142-xSE Rackmount Tape Subsystems User Guide v iv Assumptions About Reader Knowledge This manual assumes that the reader is familiar with: • • The operational principles of tape drive subsystems The Small Computer Systems Interface (SCSI) The manual accommodates the intermediate user while considering the needs of the experienced user. Tandem 5142-xSE Rackmount Tape Subsystems User Guide vi v Table of Contents Chapter One – Introduction...............................................................................................................................................1 Product Description..................................................................................................................................................1 Product Parts List......................................................................................................................................................2 Features...........................................................................................................................................................................2 SCSI Compatibility...................................................................................................................................................3 DDS-3 Format and Compatibility.....................................................................................................................3 SCSI Cabling Limitations.....................................................................................................................................4 Chapter Two – Installation.................................................................................................................................................5 Unpacking the Subsystem....................................................................................................................................5 Installing the Tape Drive Subsystem...............................................................................................................5 Terminating the Subsystem.................................................................................................................................6 Powering the Drive On and Off..........................................................................................................................6 Setting the Subsystem's SCSI ID.........................................................................................................................7 Upgrading the Firmware by Tape ....................................................................................................................8 Chapter Three – Controls and Indicators..................................................................................................................9 Controls and Indicators..........................................................................................................................................9 Understanding the Tape Drive LEDs...............................................................................................................10 Chapter Four – Tape Cartridges.......................................................................................................................................12 Tape Cartridge.............................................................................................................................................................12 Selecting a Tape Cartridge ....................................................................................................................................13 Write-Protecting a Tape Cartridge...................................................................................................................13 Labeled and Unlabeled Tapes.............................................................................................................................13 Loading a Tape Cartridge......................................................................................................................................14 Unloading a Tape Cartridge ................................................................................................................................15 Forcing the Ejection of a Cartridge..................................................................................................................15 Chapter Five – SCSI Bridge Electronics......................................................................................................................16 Introduction to the Subsystem Display..........................................................................................................16 Front Panel LCD........................................................................................................................................................16 Mode Switch.................................................................................................................................................................16 Display Unit LEDs ....................................................................................................................................................16 Understanding the Capacity Bar Graph ........................................................................................................17 Initial LCD....................................................................................................................................................................17 Performance LCD Format ....................................................................................................................................18 Setting the Tape Density.........................................................................................................................................20 Setup Display Format..............................................................................................................................................21 Setup Overview ............................................................................................................................................................21 Setup 1 Configuration Display Format Items .............................................................................................23 Setup 2 Configuration Display Format Items .............................................................................................25 Setup 3 Off-line Utilities Display Format Items .........................................................................................27 Tandem 5142-xSE Rackmount Tape Subsystems User Guide vii Chapter Six – Maintenance..................................................................................................................................................32 5142-xSE Subsystem Tape Path Cleaning....................................................................................................32 Cleaning the LCD......................................................................................................................................................33 Operating Environment..........................................................................................................................................33 Chapter Seven – Specifications.........................................................................................................................................34 Electrical........................................................................................................................................................................34 Physical ..........................................................................................................................................................................34 Display Unit .................................................................................................................................................................35 Signal Cables...............................................................................................................................................................35 Agency Approvals......................................................................................................................................................35 Chapter Eight – Technical Support................................................................................................................................36 Contact Numbers......................................................................................................................................................36 Index.................................................................................................................................................................................................37 Tandem 5142-xSE Rackmount Tape Subsystems User Guide viii vi 5142-xSE Subsystem Tape Path Cleaning The Media Caution LED is located on the front panel of the tape drive. When it flashes amber, the tape heads are already dirty. Tape Media Caution 1 2 1 2 Detail A Figure 1 5142-xSE Media Caution LED Warning!!! The tape heads must be cleaned regularly. Different tape cartridges (60m, 90m, 120 and 125m) required different cleaning intervals. Use the recommended cleaning schedule as specified per cartridge type. See the Tables 1 and 2. Recommended Cleaning Schedule for 60m, 90m and 120m Tape Cartridges (DDS-1 and DDS-2) DDS cartridges used ≤1 2–3 each day Recommended Cleaning weekly twice a week Frequency Table 1 daily 5142-xSE's cleaning schedule when using DDS-1 and DDS-2 tape cartridges Number of DDS cartridges used each day Recommended Cleaning Frequency Table 2 4≥ Recommended Cleaning Schedules for 125m Tape Cartridge (DDS-3) 1 2 3 8 weeks 4 weeks 4 or more 3 weeks weekly 5142-xSE's cleaning schedules when using DDS-3 tape cartridges If you regularly use DDS-1 and DDS-2 tape cartridges along with DDS-3 tape cartridges, more frequent cleaning is required. Tandem 5142-xSE Rackmount Tape Subsystems User Guide ix Using the Cleaning Cartridge Note: To prevent contamination of the subsystem and damage to the heads (1) do not use the cleaning cartridge for more than the manufacturer's specified number of cleaning cycles; and (2) do not attempt to rewind the material in the cleaning cartridge and reuse it. Insert the cleaning cartridge into the drive. The drive automatically takes the cartridge, loads it and cleans the heads. After about 30 seconds, the drive ejects the cartridge. Note: If the cartridge ejects after only about 15 seconds, this means the cartridge has reached the end of its useful life, and no cleaning has occurred. The Cleaning Needed LED may still be illuminated. If this happens, discard the cartridge and with a new cleaning cartridge repeat the cleaning operation. Take the cartridge out of the drive. Write the date on the label of the cleaning cartridge so that there is a record of how many times it has been used. Do not use the cleaning cartridge more times than specified by the manufacturer. Tandem 5142-xSE Rackmount Tape Subsystems User Guide x Chapter One – Introduction 1.1 Product Description The 5142-xSE was designed and built specifically for Tandem Computers by TapeLabs for use in a telco central office environment. It's applications include file backup, archiving and software loading. The 5142-1SE contains one DAT drive. The 5142-2SE contains two independent DAT drives. The models are identified as: Tandem Model Number 5142-1SE 5142-2SE Table 3 Note: Tandem Part Number 139086 130985 Number of DAT drives One Two Tandem model and part number While it is housed in the same enclosure as the 5142-2SE, the 5142-1SE contains only one DAT drive, one TapeLabs' intelligent LCD, one set of Infourmm SCSI bridge electronics and one set of rear connectors. The vacant bay in the enclosure is concealed with a bezelmatching filler panel in the front and sheet metal in the back. In the interest of brevity and to avoid redundancy, this manual uses the term 5142-xSE when discussing content that is common to both the 5142-1SE and 5142-2SE. Additionally, the illustrations contained within this manual focus on the 5142-2SE; however, when the need arises, the 5142-1SE is handled on an individual basis. The 5142-xSE unit mounts in a 19-inch opening. It consists of a 4mm DAT drive, a printed circuit board (The printed circuit board acts as a fast SCSI bridge between the host and tape drive. It is used for collecting data and displaying transaction information on the subsystem's LCD), a AC/DC converter, and a cooling fan. It has built-in Power On Self Test (POST) diagnostics. The 5142-xSE is DDS-3, using the 125 meter DDS-3 tape cartridge. The drive is also backward compatible with the DDS-2 and DDS-1 tape formats. The unit is considered a Field Replaceable Unit (FRU), and can be installed or replaced by a Tandem customer service representative. Each DAT drive module has a front panel LCD that shows performance and statistical information to the user. Additionally, the LCD panel, allows some configuration and diagnostic utilities to be run to verify correct drive set-up and functionality. Internal drive and PWA firmware can be upgraded without the necessity of opening the drive case via a code-load tape. The DAT drive can store 12GB of data per DDS-3 cartridge, and up to 24GB of data in compressed mode (assuming a 2:1 compression factor). The drive has both read and write heads and can perform read-after-write (RAW) data checking on the fly. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 1 Chapter One – Introduction 1.2 Product Parts List The following items are supplied with each 5142-xSE rackmount subsystem: Description Tandem Model ASM: TD, DAT, DDS, DUAL, K-CO The following items are included: • DAT drive (1) • 19" rack mount unit (1) • Terminator, Centronics differential 50 pin (2) • 125m DDS-3 tape cartridge (2) • Cleaning Cartridge (1) • User manual (1) • Order form (1) • Mounting screws, TPN 139218 (10-32X.50) Phillips pan head SEMS with external lock washer (4) ASM: TD, DAT, DDS, DUAL, K-CO The following items are included: • DAT drive (2) • 19" rack mount unit (1) • Terminator, Centronics differential 50 pin (2) • 125m DDS-3 tape cartridge (2) • Cleaning Cartridge (1) • User manual (1) • Order form (1) • Mounting screws, TPN 139218 (10-32X.50) Phillips pan head SEMS with external lock washer (4) Table 4 1.3 TapeLabs Part Number 9-01-3152 Qty. 5142-1SE Tandem Part Number 139086 5142-2SE 139085 9-01-3151 1 1 5142-xSE Package Components Features 1.3.1 Recording technology: • 1.3.2 Helical scan Capacity: Cartridge Type 60m cartridge 90m cartridge 120m cartridge 125m cartridge Drive Type DDS-1 DDS-1 DDS-2 DDS-3 Native 1.3GB 2.0GB 4.0GB 12.0GB Compressed* 2.6GB 4.0GB 8.0GB 24GB *assumes 2:1 data compression Table 5 1.3.3 Tape capacities SCSI bus data transfer rates (sustained): Tandem 5142-xSE Rackmount Tape Subsystems User Guide 2 Chapter One – Introduction • • 1.3.4 SCSI bus data transfer rates (burst): • 1.3.5 Intelligent front end, backlit, supertwist LCD Advanced drive test and exercise function Firmware upgrade function Drive Rated Performance: • • • • • 1.4 SCSI-2, differential LCD and control panel: • • • 1.3.7 3MB/s asynchronous Interface: • 1.3.6 1.0MB/s uncompressed 2.0MB/s compressed Recording density: 122,000 BPI Error rate: <10-15 Buffer size: 2MB Load time: <20 seconds Unload time: 80 seconds with 125m tape SCSI Compatibility The 5142-xSE tape drive subsystem's interface complies with the American National Standard Institute (ANSI) standard X3T9.2 (SCSI-2). This standard defines the specifications for the Small Computer System Interface (SCSI). As defined by the ANSI, SCSI is essentially an input/output bus for interconnecting computers and peripherals. 1.5 DDS-3 Format and Compatibility The 5142-xSE's DDS-3 format is an extension of the DDS-1, DDS-DC and DDS-2 formats. DDS formats have been developed to provide data storage for computers by using and extending DAT technology. DDS-3 allows 12GB of uncompressed data to be stored on a DDS-3 (125m) tape cartridge. Data compression increases this storage capacity. A compression ratio of 2:1 raises the capacity to 24GB. • The DDS-3 format allows compressed data to be stored in a way that maintains the full functionality of the DDS-1, DDS-DC and DDS-2 formats, and ensures backward compatibility in reading and writing with existing DDS drives. • The drive automatically decompresses DCLZ data, even if data compression is inactive. • DDS-2 tapes written on a DDS-3 tape drive are readable by a DDS-2 tape drive; however, a DDS-3 (125m) is NOT readable on a DDS-2 drive. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 3 Chapter One – Introduction • The DDS-3 format uses the same error correction techniques as the DDS-1 format. These incorporate the error correction techniques used in DAT drives with additional techniques specifically designed to provide the integrity of data necessary for computer use. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 4 Chapter One – Introduction 1.6 SCSI Cabling Limitations Maximum total allowable cable length for a differential SCSI interface is 82 feet (25 meters). This distance must be measured from the controller to the last device on the bus. Remember to add 12 inches for the internal cable of each subsystem. Cables provided are 110 ohm twisted pair. If you are using a cable of unknown composition, we suggest you replace it with the one provided by Tandem Computers. When ordering, please reference one of the following part numbers: 517-010W* 517-025W* 517-050W* 517-075W* *010, 025, 050 and 075 refer to cable length in feet Tandem 5142-xSE Rackmount Tape Subsystems User Guide 5 Chapter Two – Installation 2.1 Unpacking the Subsystem Carefully unpack and inspect the subsystem. Inspect the parts for possible damage. If damage is observed, immediately notify the carrier and your vendor. Save the carton and packing materials in case your need to ship your subsystem. 2.2 Installing the Tape Drive Subsystem Note: For instructions on installing the 5142-xSE in the Himalaya K2000SE Server, please refer to Tandem publication 5142-xSE DAT Subsystem Installation for Himalaya K2000SE Servers (part number 142191). 2.2.1 Slide the 5142-xSE into the adapter bracket. Using the four 10-32 screws and washers (provided), secure the 5142-xSE to the adapter bracket. 2.2.2 Connect the SCSI cable(s) to the host computer's SCSI port. Attach the other end of the SCSI cable(s) to either of the subsystem's SCSI connectors. DRIVE A DC Power Input Connectors Fan SCSI Connectors 5142-1SE Rear Panel DRIVE B SCSI Connectors DRIVE A Fan DC Fan Power Input Connectors SCSI Connectors 5142-2SE Rear Panel Figure 2 5142-xSE subsystem rear panel Tandem 5142-xSE Rackmount Tape Subsystems User Guide 6 Chapter Two – Installation 2.3 2.2.5 Connect the -48 volt DC power cord to the power connector(s) of the subsystem. There are independent DC power ports for each drive. 2.2.6 Your hardware is now installed. Refer to your backup software's documentation for instructions on performing a tape backup. Note: Make sure that you have terminated the subsystem and have set the subsystem's SCSI ID. (See Sections 2.3 and 2.5 respectively) Terminating the Subsystem The SCSI bus requires termination to be installed at both ends of the bus. Termination power must be supplied by at least one device on the bus. Your tape drive subsystem terminates externally using standard Centronics 50-pin connectors. The two rear panel connectors of drives A or B are interchangeable. Please be certain to use the correct terminator, a differential, for your host computer environment. The SCSI terminators are available from Tandem Computers, TapeLabs and other suppliers of quality components. Your tape drive subsystem has two SCSI connectors to allow the daisychaining of SCSI peripherals. Terminate the last peripheral device on the SCSI bus. Only the last physical SCSI device on the bus may be terminated. When you have external units attached to the bus, none of the devices on the SCSI bus can be internally terminated. The following table summarizes the SCSI termination requirement. If the tape subsystem is… Then… the last of multiple devices on the SCSI bus or the only device on the bus – install the differential or single-ended terminator plug to the unused rear panel SCSI connector. in a daisy-chained configuration with other SCSI devices and is not the last device on the bus – install the terminator on the last device on the bus. Table 6 Note: 2.4 SCSI termination requirements For proper operation of external termination, the host must provide the termination power. If you experience termination problems, please check your tape controller's termination power fuse. Powering the Drive On and Off Input power for the 5142-xSE tape drive subsystem is controlled by the K-series computer. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 7 Chapter Two – Installation 2.5 Setting the Subsystem SCSI ID: The 5142-xSE is a SCSI device. Each device connects to your system through the SCSI bus and MUST have a unique SCSI ID in order for your computer to recognize it. There are not any requirements about the order or position of the SCSI IDs; the only requirement is that no duplicate IDs exist. Devices on the SCSI bus malfunction if two or more devices have identical SCSI IDs. The subsystem SCSI ID must be 5 for connection to the Multifunction Controller (MFC). For 3214 tape controller connection, valid IDs are 4 and 5. 2.5.1 Hold in the mode switch while powering on the computer. The following displays appear and cycle at a two second interval. *Set-Up* Release Button to Start Enter Set-Up 1 PRESS to Select Enter Set-Up 2 PRESS to Select Enter Set-Up 3 PRESS to Select Exit Set-Up PRESS to Select Mode Switch Figure 3 2.5.2 Setup menus Push the mode switch when Setup 1 displays. The following screens appear and cycle at a two second interval. Enter Set-Up 1 PRESS to Select SCSI ID: [00] PRESS to Alter Tape ID: [00] *NOT sel ectable* Tape Term:On *NOT sel ectable* Density: [FF] *NOT sel ectable* Rwr% 0.5 Ecc: 0.5 PRESS to alter Exit Set-up 1 PRESS to Select Figure 4 Setup 1 configuration menu Tandem 5142-xSE Rackmount Tape Subsystems User Guide 8 Chapter Two – Installation 2.5.3 Select the SCSI ID screen by pushing the mode switch when the SCSI ID screen displays. This configuration menu item allows you to set the SCSI ID. When the screen reads PRESS to Alter, push the mode switch. The LCD shows the instruction PRESS to Incremnt. On the second line of the display, a highlight indicates what digit is alterable. To increment the digit, push the mode switch. The subsystem SCSI ID must be 5 for connection to the MFC. For 3214 tape controller connection, valid IDs are 4 and 5. If there is no mode switch activity for four seconds the display shows PRESS if Done, allowing you to confirm the setting. The displays returns you to the Setup 1 configuration menu. Push the mode switch to exit the setup menus. SCSI ID: [00] PRESS to Alter Figure 5 2.6 SCSI ID: [01] PRESS to Incremnt SCSI ID: [01] PRESS if Done Setting the SCSI ID Upgrading the Firmware by Tape The drive allows you to upgrade its firmware by inserting a firmware upgrade cartridge. The process takes at least three minutes to complete. Caution: Do not disconnect power at any time during the upgrade process, particularly when the front panel lights are flashing, or it may result in the drive having corrupt firmware or no firmware at all. The drive will then have to be returned to the factory. Make sure that the drive is not engaged in any SCSI activity. Insert the firmware upgrade tape into the drive. The upgrade process automatically takes place. During the actual erasure and reprogramming of the firmware, it is critical that you do not power down the drive. The front panel LEDs flash rapidly during this critical time. After about three minutes, when the upgrade is complete, the cartridge ejects. Remove it, and put it in its box. Note: If the firmware upgrade is incompatible with your hardware, no upgrade will take place. The tape will be ejected after about one minute instead of the usual three minutes. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 9 Chapter Three - Controls and Indicators 3.1 Controls and Indicators This chapter discusses the 5142-xSE tape subsystem controls and indicators by function, location and type. Figure 6 provides views of the 5142-1SE tape drive subsystem's front panel, and lists the controls and indicators. Figure 7 identifies all the connectors and switches on the 5154-2SE rear panel. DRIVE A Filler Panel Tape Drive Eject Display Mode LCD LEDs Button LEDs Switch 5142-1SE Front Panel DRIVE A DC Power Input Connectors Fan SCSI Connectors 5142-1SE Rear Panel Figure 6 5142-1SE front and rear panels Tandem 5142-xSE Rackmount Tape Subsystems User Guide 10 Chapter Three - Controls and Indicators DRIVE A DRIVE B Tape Drive Eject Display LEDs Button Unit Display LEDs Mode LCD Switch 5142-2SE Front Panel DRIVE B DRIVE A SCSI Connectors Fan DC Fan Power Input Connectors SCSI Connectors 5142-2SE Rear Panel Figure 7 3.2 5142-2SE front and rear panels Understanding the Tape Drive LEDs The 5142-xSE tape subsystem has two LEDs that communicate drive status (See Figure 8). By looking at the LEDs, you can determine the operating states. Tape Media Caution 1 2 1 2 Detail A Figure 8 5142-xSE subsystem communication LEDs Tandem 5142-xSE Rackmount Tape Subsystems User Guide 11 Chapter Three - Controls and Indicators 3.2.1 3.2.2 3.2.3 The Tape LED (number 1 in Figure 8) uses green to show tape activity as follows: • Slow flashing green means a tape is being loaded or unloaded. • Steady green means a tape is loaded. • Fast flashing green means read or write operations are occurring. The Media Caution LED (number 2 in Figure 8) uses amber to show the following conditions: • Slow flashing amber indicates that the tape drive heads need to be cleaned, or the tape cartridge is wearing out. • Steady amber indicates a hard fault. The subsystem should be replaced. Call Tandem Nonstop Support Center. Additional LED patterns Key Any Any Figure 9 Activity – load or unload Off Activity – read or write Green Cartridge loaded Amber Cleaning Needed signal Flash Green (1/2s on, 1/2s off) Fault Flash Amber (1/2s on, 1/2s off) Power-on (starts with two steady lights Fast Flash Green (1/4s on, 1/4s off) Additional 5145 LED patterns Tandem 5142-xSE Rackmount Tape Subsystems User Guide 12 Chapter Four - Tape Cartridges 4.1 Tape Cartridge A cartridge is a storage device that contains either magnetic tape or a cleaning ribbon inside a protective case. The cartridge protects the tape or ribbon and makes handling easier. There are two type of cartridges: (1) cleaning cartridges and (2) cartridge tapes. 1. Cleaning tapes are used to clean the tape drive recording heads with a cleaning ribbon. 2. Cartridge tapes hold magnetic storage media for the tape subsystem. A cartridge tape is a selfcontained plastic shell containing a spool of magnetic tape. These cartridges are used to record and read back system data. 4.1.2 Humidity To avoid condensation problems, allow a tape to stabilize at least two hours after it has been moved from one temperature and humidity to another before you use it. 4.1.3 Life Expectancy of Tapes All DDS-certified media is electronically checked to withstand at least 2000 passes. Under optimum environmental conditions (50% relative humidity, 22ºC), this is equivalent to about 200-300 backup operations. This takes into account that an area of tape may have several passes during a backup. Sustained use at the low end of the humidity specification will reduce the tape life. 4.1.4 Using Labels Cartridge and magazine labels must be firmly stuck to the recessed label area and nowhere else. To avoid a mechanism jam, observe the following: • Labels must be firmly stuck and not peeling off or curling at the corners. • Labels must only be stuck within the label area. • A label must not be stuck on top of another label. • Only use the labels that are supplied with the cartridges or magazine. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 13 Chapter Four - Tape Cartridges 4.2 Selecting a Tape Cartridge The 5142-xSE uses data-quality removable, rewriteable 4mm DAT cartridges. The following table shows tape cartridge capacity. Cartridge Type Drive Type 60m cartridge 90m cartridge 120m cartridge 125m cartridge DDS-1 DDS-1 DDS-2 DDS-3 Native Capacity 1.3GB 2.0GB 4.0GB 12.0GB Compressed Capacity* 2.6GB 4.0GB 8.0GB 24.0GB *assumes 2:1 data compression Table 7 4.3 Tape capacities Write-Protecting a Tape Cartridge The tape cartridge (See Figure 10 has a write-protect switch that protects data cartridges from being overwritten. To protect the cartridge, slide the switch all the way to the left (the hole will be visible). Data can then be read from the tape but not written to it. Slide the switch to the right (covering the hole) to write-enable the cartridge. Data can then be written to and read from the tape. Cartridge to be Loaded in this Orientation Cartridge to be Loaded in this Orientation Digital Data Storag Label Side Up Label Side Up Write Enabled White Switch to the Right 4.4 Digital Data Storag Write Protected White Switch to the Left Figure 10 Write-protecting a cartridge Caution The tape log, which contains a history of usage of the tape, will not be updated when the cartridge is write-protected. It follows that the tape log becomes inaccurate if a cartridge is used when write-protected. Labeled and Unlabeled Tapes The 5142-xSE can use both labeled and unlabeled cartridge tapes. A tape label is a record at the beginning of a tape that identifies the tape volume and the files it contains. An expiration date protects labeled-tape information from being accidentally overwritten. A scratch tape is a labeled tape with an expiration data that has passed. If a tape has no standard label, it is considered unlabeled. Tandem systems support two standard tape-label formats: (1) ANSI and (2) IBM-MVS. Note: Because they can be cataloged and offer security features for protecting data, labeled tapes should be used with the 5142-1SE and 5142-2SE tape subsystems. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 14 Chapter Four - Tape Cartridges 4.5 Loading a Tape Cartridge Warning!!! 4.5.1 Ensure the subsystem's power is on and the tape drive is ready before loading a cartridge. Be careful not to insert a cartridge backwards or upside down. Power on the subsystem. Input power for the 5142-xSE is controlled by the S-series computer. Note: 4.5.2 Use only cartridges labeled DDS. Never use DAT cartridges because the mechanism of the cartridge is not certified. Make sure that only one label is stuck to the label area of the cartridge, and that it is stuck firmly. Never use non-standard labels, and never stick anything to the cartridge other than in the label area. Insert a cartridge into the slot on the front panel. The cartridge is now in a semi-loaded state. The drive threads the tape, initiates a load sequence and goes on-line. The load sequence takes approximately 20 seconds for a new tape and 15 seconds for a tape already containing data. Figure 11 4.5.3 Loading a tape cartridge During the load sequence, the following occurs: Tape LED (number 1 in Figure 12) slowly flashes green while the tape is being loaded. The Tape LED becomes a steady green to indicate the tape is loaded. If an excessive number of errors are detected, the Media Caution LED (number 2 in Figure 12) flashes amber. Tape Media Caution 1 2 Detail A Figure 12 1 2 Eject Button Front panel LEDs and tape eject button Tandem 5142-xSE Rackmount Tape Subsystems User Guide 15 Chapter Four - Tape Cartridges 4.6 Unloading a Tape Cartridge The cartridge ejects from the tape drive either when you press the Eject Button, or in response to a SCSI LOAD/UNLOAD command with the LOAD bit set to 0. Note: If the drive is engaged in a task when you press the Eject button, it may be a long time before it responds to the request, because it must first finish the task. This ensures that the task is terminated in a controlled manner and no data is lost. The drive rewinds, unloads and ejects the cartridge unless the drive is not in an idle state or a contingent operation (which is locking the cartridge) with the host computer is active. The Tape LED slowly flashes green while the tape unloads. Note: If the host has previously sent a PREVENT MEDIA REMOVAL command, the unloading action is different in two ways: 1. The Eject Button is disabled and has no effect when pushed. It does not initiate an unload sequence. 2. A LOAD/UNLOAD command with the LOAD bit set to zero takes the drive off-line and unthreads the tape, but does not eject the cartridge. The effects of PREVENT MEDIA REMOVAL continue until an ALLOW command is received, or the drive is reset. 4.7 MEDIA REMOVAL Forcing the Ejection of a Cartridge Caution: You may lose data if you force an eject. Also, the tape can end up invalidly formatted, because End of Data (EOD) may not have been written. Because of this, only force ejection as a last resort to recover a cartridge or if you are not prepared to wait for the normal eject procedure and urgently need to unload the cartridge, even at the risk of losing data. Press the Eject Button three times within a 5-minute period (or press the Eject Button twice within 5 minutes after a initiating a SCSI UNLOAD command). Hold the Eject Button down for at least 5 seconds. Following either of these actions, the drive waits until 35 seconds have passed from the first time that the Eject Button is pushed to give the normal eject procedure a chance to proceed. Once this period has elapsed, the drive immediately unthreads the tape and ejects the cartridge, regardless of what operation it was performing.. The drive is then reset as though the power has been switched off and then on again. Note: Forced ejection overrides any SCSI PREVENT MEDIA REMOVAL command that may be in effect, and can abort any SCSI operations that may be in progress on the drive. If the host has previously sent a PREVENT MEDIA REMOVAL command, the unloading action is different in two ways: 1. The Eject Button is disabled and has no effect when pushed. It does not initiate an unload sequence. 2. A LOAD/UNLOAD command with the LOAD bit set to zero takes the drive off-line and unthreads the tape, but does not eject the cartridge. The effects of PREVENT MEDIA REMOVAL continue until an ALLOW command is received, or the drive is reset. Tandem 5142-xSE Rackmount Tape Subsystems User Guide MEDIA REMOVAL 16 Chapter Five - SCSI Bridge Electronics 5.1 Introduction to the Subsystem Display At the heart of the display system is the Infourmm fast SCSI bridge, which provides performance information about the tape operation. In addition to bridging communications between the host and tape drive, Infourmm autonomously sends commands to the tape drive to extract the data necessary for the display. A high-performance CPU and dual SCSI buses allow the unit (1) to appear to the host as a tape device on the host bus, and (2) to interface with the tape drive as a new host on the tape bus. This private tape bus can operate independently of a host to provide such capabilities as tape mirroring, offline drive testing and tape duplication. Other features include: Fast SCSI-2 design, software configuration retained in nonvolatile memory, flash memory for firmware upgrade, and low semiconductor parts count for reliability. 5.2 Front Panel LCD A four-line, eight-character-per-line, backlit LCD provides you with performance information, configuration selections, diagnostic and special utility menus. During tape activity, the LCD shows the current tape-drive operation, a bar graph tracking tape capacity, and items such as total data transferred, average transfer rate, compression ratio, ECC rate percentage, remaining tape capacity, and rewrite percentage. When you enter the configuration, diagnostic or utility menus, the LCD presents a series of items to choose from and instructions to follow. 4-Line LCD, 8-Characters per line Mode Switch Programmable Error-Alert LED Figure 13 5.3 Compression Indicator LED Display unit controls and indicators Mode Switch The mode switch is located in the right, lower corner of the display unit. It is used to select the SCSI ID, access the off-line utilities and to perform the initial setup of the subsystem. 5.4 Display Unit LEDs The display unit has two LEDs, one green and one amber. The green LED indicates that data compression is active. The amber LED is a user-programmable, error-alert indicator that lights when the error-rate percentage reaches a predetermined value. This value may be set and/or altered using the mode switch in conjunction with the setup menus. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 17 Chapter Five - SCSI Bridge Electronics 5.5 Understanding the Capacity Bar Graph The capacity bar graph dynamically tracks remaining and consumed capacities. It updates dynamically during read and write operations. Beginning with the native capacity of the cartridge, as reported by the tape drive after a cartridge is loaded, Infourmm applies the then current average compression ratio (if any), computes the then current maximum capacity, and displays the bar graph by incrementing the appropriate number of vertical bars between the empty icon and the full icon. There are thirty such vertical bars, each equating to approximately 3.33% percent of total capacity. Empty Icon Read E F ECC Rate 0.0% Full Icon Capacity Indicators Figure 14 5.6 Understanding the capacity bar graph Initial LCD After applying power to the subsystem, Infourmm attempts to find the drive at the tape ID. Typically, tape drives require a few seconds to perform their self-test before they respond; therefore, the subsystem is not selectable to the host during this period. InFourmm ======== Power-on SelfTest Initial Power-Up Screen Figure 15 Subsystem's LCD at startup When the drive is found, the LCD presents the tape-drive ID and firmware level on the top two lines, and the product name, firmware level and SCSI ID on the bottom two lines. The subsystem is now selectable to the host as a device occupying the displayed SCSI ID. Drive Product Identification Infourmm's Firmware Level C1537A Rev L610 5170 T133BID5 Drive Firmware Level SCSI ID Description and Location of Status Display Items Figure 16 Identification of subsystem's LCD items Tandem 5142-xSE Rackmount Tape Subsystems User Guide 18 Chapter Five - SCSI Bridge Electronics 5.7 Performance LCD Format Upon receiving a TEST UNIT READY or INQUIRY SCSI command from the host, the LCD switches to the Performance Format. This is the main operational format of the LCD. The top two lines of the LCD always display the current SCSI command and the tape-capacity bar graph. The bottom two lines of the display alternate between five performance/status items. C1537A Rev L610 5170 T133BID5 Write E F TOTL XFR 4280MB Write E F XFR RATE 924KB/s Write E F COMPRESS 2.3:1 Write E F RWr Rate 0.1% Write E F REMAIN'G 4.4GB Figure 17 5.7.1 Subsystem's performance LCD format Current Tape Operation The current SCSI command being executed displays on the top line of the LCD. Typical commands shown are Read, Write, WrtFMK, Rewind, Space, etc…. (See Appendix for a complete list of SCSI commands.) Write E F TOTL XFR 74MB Figure 18 Current tape operation display Additionally, off-line utilities use this area to display tape-drive errors. The SCSI Request Sense command provides information about an error. Interpretation for bytes 2, 12 and 13 of Request Sense data may be found in your tape drive manual. For example, the following cyclic display indicates that an attempted write to a write-protected tape caused the failure. ERROR KEY=47 ASC=27 SCQ=00 Tandem 5142-xSE Rackmount Tape Subsystems User Guide 19 Chapter Five - SCSI Bridge Electronics 5.7.2 Total Data Transferred Total data bytes read or written to/from the subsystem show with a KB (1024), MB (1024 x 1024) or GB (1024 x 1024 x 1024) multiplier. On the first read or write command following a rewind, the count is set to zero. Write E F TOTL XFR 74MB Figure 19 5.7.3 Total data transferred LCD Transfer Rates in KBytes per Second The average transfer rate between the host and the subsystem is calculated by dividing the total data transferred by the elapsed time since the first read or write command following a rewind or write filemark. Write E F XFR RATE 425KB/s Figure 20 Note: Transfer rate LCD Tape drives incorporate a data buffer to help maintain a constant data rate to the recording heads. When this buffer is empty, 1 MB of data or more can appear to be instantly written to the tape drive and a correspondingly high transfer rate displays. When the buffer is sufficiently full, the recording heads are set in motion. A substantial delay accompanies this first write-to-tape (much like the delay you experience after pressing the play button of a VCR). This results in a drop in the transfer rate. With continued writing to the subsystem, the tape constantly moves and the average transfer rate approaches the quoted streaming rate. 5.7.4 Compression Ratio Write E F COMPRESS 2.3:1 Figure 21 Compression ratio LCD The average compression/decompression ratio shows as the ratio of the compressed and uncompressed data lengths as reported by the tape drive. The ratio is always displays in the format X.X:X. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 20 Chapter Five - SCSI Bridge Electronics 5.7.5 Remaining Capacity This value is an estimate of remaining tape capacity. It is computed by multiplying the average compression ratio by the remaining block count. KB, MB and GB represent multipliers of 1024, 1024 x 1024, and 1024 x 1024 x 1024, respectively. Read E F REMAIN'G 1.7GB Figure 22 5.7.6 Remaining capacity readout ECC/Rewrite Percentage The number of ECC (when reading) or rewrite (when writing) occurrences, as a percentage of the total number of read or write commands since the last rewind, display in the format XX.X. In general, error rates are the highest at the beginning of a tape since this part of the tape is written to every time the tape unloads. When this area becomes worn, tapes become unreliable. Errors above 10.0 suggest worn tapes or the need to clean the recording heads. Read E F ECC Rate 0.0% Figure 23 5.8 Read E F RWr RATE 0.0% ECC/Rewrite percentage displays Setting the Tape Density Tape density format may be controlled by the SCSI bridge electronics or by the host system. When the appropriate drivers exist, the latter method is preferred and a setting of FF should be used. When the unit is not busy, you can change the tape density by pressing the mode switch. Pressing the mode switch cycles the available density settings. The options for tape density scroll on the LCD. DEN=CO Rev L610 5170 T133BID5 DEN=40 Rev L610 5170 T133BID5 DEN=FF Rev L610 5170 T133BID5 CO = compression on 40 = compression off Not applicable for this application Figure 24 Compression selection screens Tandem 5142-xSE Rackmount Tape Subsystems User Guide 21 Chapter Five - SCSI Bridge Electronics When the desired tape density appears, push the mode switch to select it. The selected setting is used until the unit is repowered or reset. The choices offered are as follows: C0 = Compressed format 40 = Non-compressed format FF = Density controlled by the host software Note: 5.9 The setting from the last change of tape density is used as the default start-up value. Density may be changed on a tape-by-tape basis any time the tape is at BOT during normal Performance Display operation. Setup Display Format Configuration of the electronics is accomplished by using the mode switch. All values are retained in nonvolatile memory. There are three setup menus: Setup 1 and Setup 2 contain configuration items while Setup 3 is comprised of diagnostic and special utilities. Enter the setup menus by holding in the mode switch while powering up the subsystem. The menu display system consists of the following hierarchy: *Set-Up* Release Button to Start Enter Set-Up 1 PRESS to Select Enter Set-Up 2 PRESS to Select Enter Set-Up 3 PRESS to Select Exit Set-Up PRESS to Select Mode Switch Figure 25 5.10 Subsystem's setup menus Setup Overview Within each menu, the individual items generally take the following format on the four-line LCD: Parameter Instruction SCSI ID: [00] PRESS to Alter Setting LCD Setup Format Figure 26 Subsystem's LCD setup format •PARAMETER denotes the configuration being reviewed or edited. •SETTING (in SETUP 1 and SETUP 2) is the value that you can change. •INSTRUCTION describes what action should be taken if the mode switch is pressed. If the mode switch is inactive for four seconds, the display changes. In general, the menu system is designed to show continuously the current settings with the instruction PRESS to Alter, which allows the operator the opportunity to alter the value. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 22 Chapter Five - SCSI Bridge Electronics 5.10.2 Changing a Setting Depending on the menu item, alter settings by the appropriate method explained below. When the instruction reads PRESS to Alter you have the option of exiting from the editing mode ore remaining in the editing mode to review the settings. Numeric-Entry Method With this method you change settings by entering a decimal or hexadecimal number, digit-bydigit. The LCD shows the instruction PRESS to Incremnt while a highlight indicates what digit is alterable. You increment the digit by pressing the mode switch. If there is no switch activity for four seconds, the highlight proceeds to the right to the next digit. When the highlight proceeds past the rightmost digit, the display shows PRESS if Done, allowing you to confirm the changes. If the numerical value requires additional editing, do not press the mode switch. Wait until the highlight restarts at the leftmost digit and then continue editing the setting. SCSI ID: [00] PRESS to Alter Figure 27 SCSI ID: [01] PRESS to Incremnt SCSI ID: [01] PRESS if Done Numeric entry example Pick-Entry Method This method of configuration allows you to select from a predefined list of items. When PRESS to Scroll displays on the LCD, you can view the list of items by repetitively depressing the mode switch. When the switch is inactive for four seconds, the instruction PRESS if Done appears to allow you to confirm the setting. If you do not want the setting wait until the PRESS to Scroll instruction appears on the LCD, and then continue editing. BaudRate 9600 bps PRESS to Alter BaudRate 9600 bps PRESS to Scroll BaudRate 1200 bps PRESS to Scroll BaudRate 2400 bps PRESS to Scroll BaudRate 19K2 bps PRESS if Done Figure 28 Pick entry example Tandem 5142-xSE Rackmount Tape Subsystems User Guide 23 Chapter Five - SCSI Bridge Electronics 5.11 Setup 1 Configuration Display Format Items Enter Set-Up 1 PRESS to Select SCSI ID: [00] PRESS to Alter Tape ID: [00] *NOT sel ectable* Tape Term: On *NOT sel ectable* Density: [C0] PRESS to Alter Rwr% 0.5 Ecc: 0.5 PRESS to Alter Figure 29 5.11.1 Exit Set-Up 1 PRESS to Select Setup 1 configuration items Setting the subsystem SCSI ID SCSI ID: [00] PRESS to Alter Figure 30 SCSI ID: [01] PRESS to Incremnt SCSI ID: [01] PRESS if Done Setting the SCSI ID This configuration menu item sets the host SCSI ID that is used by the host system to select the subsystem. Enter a value (0-7) using the Numeric Entry Method. Since no two devices can have the same SCSI ID on the host bus, please consult your computer manual or system administrator for available SCSI IDs for tape devices. Note: 5.11.2 The ability to set independently the tape drive's SCSI ID and the host subsystem's SCSI ID is very useful. As you add devices to a system's SCSI bus, you no longer have to manipulate jumpers or switches on the tape drive. The subsystem ID can be altered from subsystem's front panel without regard to the actual physical SCSI ID of the drive itself, making SCSI device additions quick and simple. Setting the Tape Drive ID This configuration item has been factory-configured and is, therefore, not selectable. Tape ID: [00] *NOT sel ectable* Figure 31 Tape drive ID Tandem 5142-xSE Rackmount Tape Subsystems User Guide 24 Chapter Five - SCSI Bridge Electronics 5.11.3 Setting the Tape Termination This configuration item has been factory-configured and is, therefore, not selectable. Tape Term:On *NOT sel ectable* Figure 32 5.11.4 Tape termination Selecting the Tape Density Tape density format may be controlled by the display unit or by the host system. When the appropriate drivers exist, the latter method is generally preferred and a setting of FF should be used. Other density values shown below allow the SCSI bridge electronics to control the tape density. Density: [C0] PRESS to Alter Figure 33 Density: [00] PRESS to Incremnt Density: [F0] PRESS to Incremnt Density: [FF] PRESS if Done Tape densities DAT Drives C0 40 FF Note: = = = Compressed mode Noncompressed mode Density controlled by the host software Once the settings have been configured through the setup menus, these settings become the default start-up values. Density may be changed on a tape-by-tape basis any time the tape is at BOT during normal Performance Display operation. Depressing the mode switch cycles the available density settings. Depressing the mode switch a second time selects the setting. This setting is used until the unit is repowered or reset. The setting selected in the setup menu will then be used as the default value. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 25 Chapter Five - SCSI Bridge Electronics 5.11.5 Setting the Error-Alert (ECC/Rewrite Percentages) Thresholds The electronics allow you to set a numeric percentage for error-alert thresholds that, when exceeded, cause the amber LED (the lower LED on the subsystem's front panel) to blink. Enter error-alert thresholds by the Numeric Entry method. First, set the rewrite threshold followed by the ECC threshold. Entries take the form XX.X, so that you may enter values in the range of 00.0 percent to 99.9 percent. Setting values less than 10.0 percent is recommended. Lower values cause the amber LED to light and/or blink at a lower percentage of error occurrences. Note: Because the beginning of tape is written to every time a tape is unloaded, this area of the tape tends to wear sooner than the rest of the tape media's length. As a result, it is not unusual to experience rewrites or ECC's at the beginning of tape. If such occurs, the predetermined thresholds may be exceeded early, but the percentage then drops below the threshold as reading or writing moves further down the tape. To signal this, the error-alert LED blinks when the error rates currently exceed the set values, but returns to a steady illumination if, once exceeded, the error rate falls below the set value. Rwr% 0.5 Ecc:80.5 PRESS to Alter Rwr% 0.5 Ecc:80.5 PRESS to Incremnt Rwr% 0.5 Ecc:80.5 PRESS to Incremnt Rwr%30.5 Ecc:80.5 PRESS to Incremnt Rwr%30.7 Ecc:20.5 PRESS to Incremnt Rwr%30.7 Ecc:24.5 PRESS to Incremnt Rwr%30.7 Ecc:24.2 PRESS to Incremnt Rwr%30.7 Ecc:24.2 PRESS if Done Figure 34 5.12 Rwr%30.7 Ecc:80.5 PRESS to Alter Setting error-alert (ECC/Rewrite percentages) thresholds Setup 2 Configuration Display Format Items Enter Set-Up 2 PRESS to Select Key:2.01 [288FEA] *NOT sel ectable* Options: 00001401 PRESS to Alter BaudRate 9600 bps PRESS to Alter EM: ---NONE *NOT sel ectable* Exit Set-Up 2 PRESS to Select Figure 35 Setup 2 configuration items Tandem 5142-xSE Rackmount Tape Subsystems User Guide 26 Chapter Five - SCSI Bridge Electronics 5.12.1 Editing the option access key This configuration item has been factory-configured and is, therefore, not selectable. Key:7.0E [288FEA] *NOT sel ectable* Figure 36 5.12.2 Option access key Configuring the options setting If your configuration and/or host environment requires unique settings or special configurations, Tandem Computers can provide assistance and minor firmware configurations for specific platforms, software or drives through the use of this menu item. This setting is factory-configured at 00001400 and should never have to be changed by the user. As described above special situations may require that this setting be changed but it is highly recommended that user consult Technical Support before changing this setting. Use the Numeric Entry Method to enter the eight-digit hex value. Options 00001200 PRESS to Alter Figure 37 5.12.3 Options 00001400 PRESS to Alter Options 00001400 PRESS to Done Options setting Selecting a Baud rate Four different baud rates are available for connecting to a serial terminal or terminal emulator. Other communication parameters are: No parity, 8 data bits, 1 stop bit and xon/xoff flow control. The three-pin serial connector on the back of the subsystem allows connection to a PC serial port by using an extension cable. A communication package such as PRO-COMM (with xon/xoff enabled) allows you to upgrade the flash firmware serially. Select a baud rate by using the Pick Entry Method. BaudRate 9600 bps PRESS to Alter Figure 38 BaudRate 1200 bps PRESS to Scroll BaudRate 2400 bps PRESS to Scroll BaudRate 19K2 bps PRESS to Done Baud rate Tandem 5142-xSE Rackmount Tape Subsystems User Guide 27 Chapter Five - SCSI Bridge Electronics 5.13 Setup 3 Off-line Utilities Display Format Items Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run Hdwr Test PRESS to Run Create a CodeTape PRESS to Run Load a CodeTape PRESS to Run Exit Set-Up 3 PRESS to Select Figure 39 Setup 3 configuration items Pressing the mode switch at this menu item invokes the drive self-test and offers a series of options from which you may select. This is a standalone exerciser that may be used to diagnose problems within the tape drive. Modes of operation include fixed/variable block transfers, spacing, differing densities/compression modes and a means to control the running time. Records are written with interspersed filemarks, rewound and read/verified. This cycle repeats for other densities supported by the drive. During the whole testing process, you observe the error rate. If after using a new tape and cleaning the heads, a high error rate persists, this would be suggestive of a drive problem. Other errors might display the KEY/ASC/ASCQ bytes of a Request Sense command that are described in your tape drive's user manual. 5.13.1 Invoking the drive test options Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run 1M Fixd.Tst PRESS to Run 1M Vari.Tst PRESS to Run 10M Fixd.Tst PRESS to Run 10M Vari.Tst PRESS to Run 200M Fixd.Tst PRESS to Run 200M Vari.Tst PRESS to Run 2.5G Fixd.Tst PRESS to Run 2.5G Vari.Tst PRESS to Run Custom Tst PRESS to Select Exit Menu PRESS to Select Figure 40 Drive self-test options Tandem 5142-xSE Rackmount Tape Subsystems User Guide 28 Chapter Five - SCSI Bridge Electronics Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run 200M Fixd.Tst PRESS to Run 200M Fixd.Tst PRESS to Confirm 200M Fixd.Tst Waiting for Tape Write E F TOTL XFR 24MB Write E F XFR RATE 424KB/s Write E F COMPRESS 2.3:1 Write E F RWr Rate 0.0% Write E F REMAIN'G 1.9GB Pass E F REMAIN'G 1.9GB 200M Fixd.Tst PRESS to Escape Press to Return to Self Test Menu Figure 41 Example drive test Tandem 5142-xSE Rackmount Tape Subsystems User Guide 29 Chapter Five - SCSI Bridge Electronics Enter Set-Up 3 PRESS to Select Drive Test PRESS to Run Custom Test PRESS to Select 1MB to Xfer PRESS to Increment Variable Mode PRESS to Toggle Run Once PRESS to Toggle Ready to Run PRESS to Start Ready to Run PRESS to Escape Ready to Run PRESS to Confirm Ready to Run Waiting for tape Write E F TOTL XFR 1024MB Write E F XFR RATE 301KB/s Write E F COMPRESS 1.0:1 Write E F RWr RATE 0.0% Write E F REMAIN'G 1.8 Pass E F REMAIN'G 1761MB Press to Return to Self Test Menu Figure 42 Example custom drive test menu Tandem 5142-xSE Rackmount Tape Subsystems User Guide 30 Chapter Five - SCSI Bridge Electronics 5.13.2 Activating a hardware self test Enter Set-Up 3 PRESS to Select Hdwr Test PRESS to Run Hdwr Test Testing Scsi Hdwr Test Ram Test & Reset InFourmm ======== Power On SelfTest C1537A Rev L610 5142 T133BID5 Figure 43 Activating a hardware self-test This diagnostic item provides you with a more thorough method of testing memory and peripheral hardware. 5.13.3 Making a code tape Enter Set-Up 3 PRESS to Select Create a CodeTape PRESS to Run Create a CodeTape PRESS to Confirm Create a CodeTape waiting for tape Load Tape Create a CodeTape PRESS to Escape Figure 44 Making a code tape The SCSI bridge electronics' firmware may be copied to another unit by making a Code Tape. Configuration settings are not carried across in this tape. They must be entered manually. You will be prompted to insert a scratch tape. During operation the Performance Display appears and 64k transfers. Upon successful completion, the tape unloads and you return to the menu system. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 31 Chapter Five - SCSI Bridge Electronics 5.13.4 Loading a Code Tape Enter Set-Up 3 PRESS to Select Load a CodeTape PRESS to Run Load a CodeTape PRESS to Confirm Load a CodeTape waiting for tape Load Tape Load a CodeTape PRESS to Escape Figure 45 Loading a code tape The SCSI bridge electronics firmware may be upgraded by reading a Code Load Tape. You will be prompted to insert the tape. DO NOT disturb the unit's power until the end of the procedure. The SCSI bridge electronics relocate some internal firmware, switches to the Performance Display format, reads 64k and verifies the tape, rewinds the tape, re-reads the 64k, programs the firmware and, finally, unloads the tape when complete. You will NOT be returned to the menu system because this utility alters the RAM/ROM in a non-recoverable manner. A cold reset executes. Note: For this procedure it is recommended that the user first take the tape subsystem off-line and then disconnect the SCSI cable from the rear connector of the tape subsystem. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 32 Chapter Six – Maintenance 6.1 5142-xSE Subsystem Tape Path Cleaning The Media Caution LED is located on the front panel of the tape drive. When it flashes amber, the tape heads are already dirty. DRIVE B DRIVE A Display Mode LCD LEDs Switch Tape Drive Eject Display LEDs Button Unit Figure 46 5142-xSE Media Caution LED Warning!!! The tape heads must be cleaned regularly. Different tape cartridges (60m, 90m, 120 and 125m) required different cleaning intervals. Use the recommended cleaning schedule as specified per cartridge type. See the Tables 9 and 10. Recommended Cleaning Schedule for 60m, 90m and 120m Tape Cartridges (DDS-1 and DDS-2) DDS cartridges used ≤1 2–3 each day Recommended Cleaning weekly twice a week Frequency Table 8 daily 5142-xSE's cleaning schedule when using DDS-1 and DDS-2 tape cartridges Number of DDS cartridges used each day Recommended Cleaning Frequency Table 9 4≥ Recommended Cleaning Schedules for 125m Tape Cartridge (DDS-3) 1 2 3 8 weeks 4 weeks 4 or more 3 weeks weekly 5142-xSE's cleaning schedules when using DDS-3 tape cartridges If you regularly use DDS-1 and DDS-2 tape cartridges along with DDS-3 tape cartridges, more frequent cleaning is required. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 33 Chapter Six – Maintenance 6.1.1 Using the Cleaning Cartridge Note: 1. To prevent contamination of the subsystem and damage to the heads (1) do not use the cleaning cartridge for more than the manufacturer's specified number of cleaning cycles; and (2) do not attempt to rewind the material in the cleaning cartridge and reuse it. Insert the cleaning cartridge into the drive. The drive automatically takes the cartridge, loads it and cleans the heads. After about 30 seconds, the drive ejects the cartridge. Note: 2. 6.2 If the cartridge ejects after only about 15 seconds, this means the cartridge has reached the end of its useful life, and no cleaning has occurred. The Cleaning Needed LED may still be illuminated. If this happens, discard the cartridge and with a new cleaning cartridge repeat the cleaning operation. Take the cartridge out of the drive. Write the date on the label of the cleaning cartridge so that there is a record of how many times it has been used. Do not use the cleaning cartridge more times than specified by the manufacturer. Cleaning the LCD Put household glass cleaner on a soft cloth and wipe screen. Caution: 6.3 Do not spray the cleaner directly on the LCD because the liquid might drip into the enclosure or computer. Operating Environment The subsystem operates in any clean, indoor location. Do not store or operate the drive outside of the environmental ranges listed in the Chapter 7. 6.3.1 Avoid placing the drive in direct sunlight, rain or other moisture 6.3.2 Keep all subsystem ventilation openings unobstructed. Tandem 5142-xSE Rackmount Tape Subsystems User Guide 34 Chapter Seven – Specifications 7.1 Electrical 7.1.1 Input Power • 7.1.2 Internal DC Power: • 7.2 -48 Volts DC +5, +12 volts Physical 7.2.1 Dimensions • 7.2.2 Shipping weight • 7.2.3 7.2.4 L113" x W19" x H7.0" 27 lbs. Interfaces • SCSI-2, differential • Connectors 50-pin Centronics Environmental Specifications • Operating Temperature: 5ºC to 40ºC with tape loaded • Nonoperating Temperature: -40ºC to 45ºC with media installed -40ºC to 70ºC without media installed • Operating Humidity: 20% to 80% relative humidity with tape loaded • Nonoperating Humidity: 5% to 95% relative humidity • Heat dissipation: 90W (342 BTU/hr) maximum Tandem 5142-xSE Rackmount Tape Subsystems User Guide 35 Chapter Seven – Specifications 7.3 Display Unit • • • • 7.4 Signal Cables • 7.5 32 characters in four lines of 8 characters each Supertwist LCD technology Extra wide viewing angle Full LED back lighting Differential: 82 feet (25m) maximum Agency Approvals FCC Class A, UL, CSA, TUV, and CE mark Tandem 5142-xSE Rackmount Tape Subsystems User Guide 36 Chapter Eight – Technical Support 8.1 Contact Numbers Customers may contact Tandem Computers Technical Support through one of the following numbers: • • • • • • • • • • • • • TNSC Amsterdam TNSC Amsterdam TNSC Austin Backup TNSC Austin Customer TNSC Düsseldorf TNSC Düsseldorf 24H TNSC London TNSC Melbourne TNSC Paris TNSC Paris After Hours TNSC Stockholm TNSC Tokyo TNSC UK Toll Free 2503-68700 23-248221 512-432-6991 800-255-5010 2103-572-160 1030-844121 181-569-1800 3-207-2852 1-4114-6510 1-4114-2618 8-632-3444 3-3234-1751 0800-104545 When communicating with Tandem Computers Technical Support be sure to have the following information • • • • • Serial number of your equipment The initial LCD showing the firmware revision The Performance LCD when the error occurs A detailed description of the problem you're having with the equipment Your name, telephone number, fax number and address Tandem 5142-xSE Rackmount Tape Subsystems User Guide 37 Index Agency Approvals 35 Cabling 35 Capacity 2 Controls and Indicators 9 DDS-3 Format and Compatibility 3 Dimensions 34 Display Unit Specifications 35 Electrical Specifications 34 Environmental Specifications 34 Installation 5 Interface 2 Interfaces 34 LCD 3 LEDs Additional LED Patterns 11 Media Caution LED 11 Tape Drive 10 Tape LED 11 Maintenance LCD 33 Operating Environment 33 Tape Path Cleaning 32 Numeric-Entry Method 22 Pick-Entry Method 22 Power On/Off 6 Recording Technology 2 SCSI Cabling Limitations 4 SCSI Compatibility 3 SCSI ID Setting via Hardware 7 SCSI Transfer Rates Burst 2 Sustained 2 Specifications Agency Approvals 35 Buffer Size 3 Cabling 35 Dimensions 34 Display Unit 35 Electrical 34 Environmental 34 Error Rate 3 Interfaces 34 Load Time 3 Physical 34 Recording Density 3 SpecificationsUnload Time 3 Tape Cartridge 12 Forcing an Eject 15 Humidity 12 Labeled and Unlabeled 13 Life Expectancy 12 Loading 14 Selecting 13 Unloading 15 Using Labels 12 Write Protecting 13 Termination 6 Upgrading the Firmware 8 Tandem 5142-xSE Rackmount Tape Subsystems User Guide 38