Digital Equipment TZS20 Series User Manual
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Digital Equipment TZS20 Series User Manual

25/50 gb ait cassette tape drive
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TZS20 25/50 GB
AIT Cassette Tape Drive
User's Guide
EK–TZS20–UG. B01
Digital Equipment Corporation
Maynard, Massachusetts

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  • Page 1 TZS20 25/50 GB AIT Cassette Tape Drive User's Guide EK–TZS20–UG. B01 Digital Equipment Corporation Maynard, Massachusetts...
  • Page 2 (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013. Digital Equipment Corporation does not give a warranty of any kind regarding the fitness or applicability of the information content for a particular purpose. The user assumes all responsibility for understanding the interrelationships of this enclosed information with other affected software or system products.
  • Page 3 UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd. The following are trademarks of Digital Equipment Corporation: AXP, DEC, DECdirect, DECservice, DIGITAL, OpenVMS, SERVICenter, TZS20, VAX, VMS, and the DIGITAL Logo.

  • Page 5: Table Of Contents

    Contents Revision Record ......................... vii About This Manual ......................ix Introduction Product Overview....................1–1 Data Compression ....................1–1 Operating System Support..................1–2 TZS20 Models......................1–3 Installing the Tape Drive Unpacking the Tape Drive..................2–1 Installing the TZS20 Embedded (Internal) Tape Drive..........2–1 Installing the TZS20-DB Tabletop (External) Tape Drive........
  • Page 6 TZS20 AIT Cassette Tape Drive – User’s Guide Appendix A Supplies ........................A–1 Appendix B Specifications .......................B–1 Appendix C Supported SCSI Messages and Commands..............C–1 Readers Comment Form ...............Inside Back Cover Figures 1–1 DS-TZS20-DB Tabletop Tape Drive................ 1–3 1–2 Front View of TZS20-AB Embedded Tape Drive............. 1–3 1–3 DS-TZS20-VB StorageWorks SBB Unit ..............

  • Page 7: Revision Record

    Revision Record This Revision Record provides a concise publication history of this guide. It lists the guide revision levels, release dates, and reasons for the revisions. The following revision history lists all revisions of this publication and their effective dates. The publication part number is included in the Revision Level column, with the last entry denoting the latest revision.

  • Page 9: About This Manual

    About This Manual This manual describes the installation and operation of the TZS20 AIT Cassette Tape Drive. Visit Our Web Site for the Latest Information Check our web for the latest drivers, technical tips, and documentation. We can be found in the technical area of our web page, http://www.storage.digital.com/ Audience This guide supports the user of the TZS20 Cassette Tape Drive.

  • Page 10: Supported Scsi Messages And Commands

    TZS20 AIT Cassette Tape Drive – User’s Guide Appendix C: Supported SCSI Messages and Commands Appendix C lists TZS20 tape drive supported SCSI commands and messages. Conventions This guide uses the following conventions: Table 1 Style Conventions Style Meaning boldface type For emphasis italic type For emphasis and manual titles...

  • Page 11: Introduction

    Introduction This chapter introduces and describes the TZS20 Cassette Tape Drive. There are four TZS20 models: two embedded (internal) models, a tabletop (external) and an SBB model. Product Overview The TZS20 tape drive is a high capacity data storage device which uses 8mm Advanced Intelligent Tape (AIT) technology.

  • Page 12: Operating System Support

    TZS20 AIT Cassette Tape Drive – User’s Guide Operating System Support TZS20 is fully supported by the following Operating Systems: • OpenVMS Version 7.1 or higher • DIGITAL UNIX Version 4.0A or higher (no SCSI ID greater than 7 for all SCSI devices) •...

  • Page 13: Tzs20 Models

    Chapter 1. Introduction TZS20 Models There are four TZS20 models: • DS-TZS20-DB, tabletop, shown in Figure 1–1, • TZS20-AB, 3 ½-inch embedded, front panel shown in Figure 1–2, • TZS20-BB, 5 ¼-inch embedded, • DS-TZS20-VW, SBB unit, shown in Figure 1–3. Figure 1–1 DS-TZS20-DB Tabletop Tape Drive Figure 1–2 Front View of TZS20-AB Embedded Tape Drive EK–TZS20–UG.
  • Page 14 TZS20 AIT Cassette Tape Drive – User’s Guide Figure 1–3 DS-TZS20-VB StorageWorks SBB Unit 1–4 EK–TZS20–UG. B01...

  • Page 15: Installing The Tape Drive

    Installing the Tape Drive This chapter describes the unpacking and installation of the TZS20 AIT Cassette Tape Drive, including instructions on how to set the SCSI ID. Unpacking the Tape Drive Before unpacking the unit, check the packing slip to ensure that the correct equipment has been shipped.
  • Page 16 TZS20 AIT Cassette Tape Drive – User’s Guide 5. The embedded (internal) tape drive is pre-configured as SCSI ID 5. If there is a SCSI ID conflict in your system, you must change the jumper setting on the jumper block on the back of the tape drive. Refer to Figure 2–1. Figure 2–1 Setting the SCSI ID, Embedded Tape Drive Parity default is enabled (jumper off).
  • Page 17 Chapter 2. Installing the Tape Drive Table 2–1 SCSI ID Jumper Settings SCSI ID 0 = Jumper Removed; 1 = Jumper On. Default setting is SCSI ID 5. 6. The option switches, located on the bottom of the drive, allow you to enable active termination and terminator power.
  • Page 18 TZS20 AIT Cassette Tape Drive – User’s Guide 10. Mount the tape unit to the computer chassis appropriately and plug the DC power cable into the tape drive’s power connector, shown in Figure 2–1. Mate the female connector with the drive’s connector and firmly push it all the way into the drive’s connector.
  • Page 19 Chapter 2. Installing the Tape Drive Installing the DS-TZS20-DB Tabletop (External) Tape Drive To install the DS-TZS20-DB tabletop model proceed as follows: 1. Shut down the operating system 2. Halt the system 3. Set all system power switches off. Figure 2–3 Connecting the DS-TZS20-DB Tabletop Model EK–TZS20–UG.

  • Page 20: Installing And Removing The Sbb Tape Drive

    TZS20 AIT Cassette Tape Drive – User’s Guide 4. Make sure the SCSI ID displayed in the window matches the SCSI ID required by your system. To change the SCSI ID, make sure the unit is off and press the top or bottom pushbutton until the correct SCSI ID is displayed in the window.
  • Page 21 Chapter 2. Installing the Tape Drive 2.5.2 Verifying the Installation Under VMS After booting the system, to verify the configuration, at the OpenVMS level enter: SHOW DEVICE The screen displays: Device Device Error Volume Free Name Status Count Label Blocks $ SCT$MKA100 Online The Volume label and number of free blocks will be displayed if a tape is...

  • Page 23: Operating The Tape Drive

    Operating the Tape Drive This chapter provides operating instruction for the TZS20 Tape Drive. Controls and Indicators All TZS20 tape drive models have Busy, Tape and Status indicator LEDs and an Eject pushbutton. In addition to the three LEDs and the Eject pushbutton, the tabletop model has a Power On LED on the front panel and a Power switch on the back of the unit.
  • Page 24 TZS20 AIT Cassette Tape Drive – User’s Guide The basic functions of the Status, Tape and Busy LEDs are as follows. See Table 3-1 for additional details. Status LED Lights when an inserted cartridge is write-protected. This indicator also flashes rapidly when the tape head needs cleaning;...

  • Page 25: Summary Of Tape Drive Led Indications

    Chapter 3. Operating the Tape Drive Summary of Tape Drive LED Indications The TZS20 LEDs indicate the status of the drive as defined in Table 3–1. Table 3–1 Possible LED Indications and Their Meaning STATE Busy Tape Status Activity Cartridge Other None None...

  • Page 26: Powering Up The Tape Drive

    TZS20 AIT Cassette Tape Drive – User’s Guide Powering Up the Tape Drive Before applying power to the TZS20, check the installation. When power is turned on, the drive performs Power On Self Test (POST). It steps through its built-in diagnostic program checking the drive’s functionality until it reaches normal status.

  • Page 27: Setting The Write-Protect Switch

    Chapter 3. Operating the Tape Drive Setting the Write-protect Switch Cassettes can be write-protected by sliding the switch on the back of the cassette open, the SAFE position. When write-protected, data can be read from the tape but not written to it, preventing the tape from being accidentally erased. When a write-protected tape is loaded into the drive the Tape and Status LEDs light.

  • Page 28: Loading A Cartridge Into The Drive

    TZS20 AIT Cassette Tape Drive – User’s Guide Loading a Cartridge into the Drive A cassette is inserted into the slot on the front panel with the write-protect switch on the right-hand side, and the arrow on the cassette pointing towards the drive. When the cassette is inserted, the drive takes it and automatically loads it into the drive mechanism.

  • Page 29: Removing The Tape Cartridge From The Tape Drive

    Chapter 3. Operating the Tape Drive Removing the Tape Cartridge from the Tape Drive The tape cartridge can be removed manually by pressing the Eject pushbutton or dismounted by means of software control. Refer to the operating system documentation on software control of this function. During the unload sequence, the drive rewinds the tape to Beginning of Media (BOM) and then ejects the cassette.
  • Page 30 TZS20 AIT Cassette Tape Drive – User’s Guide cartridge but is more likely to occur on a tape with several thousand media passes completed. If it occurs with a relatively new cartridge, it is likely caused by some debris on the tape or head. In this case, it is recommended that a cleaning cycle be performed as soon as convenient (i.e., at the conclusion of the present backup operation).

  • Page 31: Care, Maintenance And Problem Solving

    Care, Maintenance and Problem Solving This chapter provides tape drive head cleaning instructions and information on how to fix common tape drive and media problems. Cleaning the Tape Drive Head The head is the component in the drive that physically reads and writes data to and from the media (the tape cartridge).

  • Page 32: Taking Care Of Tape Cartridges

    TZS20 AIT Cassette Tape Drive – User’s Guide Taking Care of Tape Cartridges To maximize the life of recorded or unrecorded cartridges, store cartridges in a clean environment with the following conditions: • Do not drop or bang the cartridge. •...

  • Page 33: Emergency Tape Removal Procedure

    Chapter 4. Care, Maintenance and Problem Solving A tape is in the drive and will not eject: If the SCSI command PREVENT/ALLOW MEDIA REMOVAL (with Prevent bit set to one) has been sent to the drive, the cartridge will be retained in the drive even after an UNLOAD command.

  • Page 34: Service Offerings

    TZS20 AIT Cassette Tape Drive – User’s Guide 1. Remove the drive from the chassis or enclosure to allow access to the bottom and right side of the drive. 2. Remove the drive’s top cover. 3. Locate the small opening in the bottom of the drive and insert the tip of a precision screwdriver so that the Threading motor shaft can be rotated.

  • Page 35: Appendix A Supplies

    Supplies This appendix lists the supplies available for the TZS20 tape drive. A.1 Ordering Information To order additional blank cartridges and head cleaning cartridges, call Digital Equipment at 1-800-344-4825 or your authorized Digital Distributor. Refer to the following table for part numbers. A–1 Ordering Numbers Order Number Description...

  • Page 37: Appendix B Specifications

    Specifications This appendix contains the technical specifications for the TZS20 tape drive. Table B–1 TZS20 Tape Drive Specifications Characteristic Specification Media and format 8-mm tape cartridge, AIT Drive Interface Wide SCSI, high-density, single- ended Buffer Size 4 MB Dimensions: Embedded (3 ½-inch form factor) Height 41.2mm (1.62 in) Width...
  • Page 38 TZS20 AIT Cassette Tape Drive – User’s Guide Table B–1 TZS20 Tape Drive Specifications (Continued) Characteristic Specification Transfer Rate, Uncompressed 3 Mbytes/sec Transfer Rate, Compressed 6–9 Mbytes/sec Transfer Rate, burst 20 Mbytes/sec Storage Capacity 25 Gbytes (uncompressed, using special AIT tape) 50 Gbytes (compressed) Bit Error Rate Less than 1 in 10...
  • Page 39 DS–TZS20–VB Leerlauf Betrieb 4,9 B 35 dBA Note: Current values for specific configurations are available from DIGITAL representatives. 1B = 10 Aktuelle Werte für spezielle Ausrüstungsstufen sind über die Digital Equipment Vertretungen erhältlich. 1B = 10 dBA. EK–TZS20–UG. B01 B–3...
  • Page 41 Supported SCSI Messages and Commands This appendix lists TZS20 supported messages and commands. C.1 Supported SCSI Messages Abort Identify (with and without disconnect) Bus Device Reset Ignore Wide Residue Command Complete Message Parity Error Disconnect Message Reject Extended Message No Operation –Synchronous Data Transfer Request Restore Pointers –Wide Data Transfer Request...

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