IBM 4mm DDS-2 Tape Autoloader User manual

IBM
24/48GB 4mm DDS-2 Tape Autoloader
Installation and User's Guide
(Internal)

Note
Before using this information and the product it supports, be sure to read the general
information under "Product Warranties and Notices" included with your system unit.
First Edition (April 1996)
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 International Business Machines Corporation 1998. All rights reserved.
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IBM Corp.

Contents
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
About This Book ...................................... vii
ISO 9000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Chapter 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Handling the Tape Drive ................................. 1-4
Drive Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2. Preparing for Installation ........................ 2-1
Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Switch and Jumper Settings ............................... 2-2
Chapter 3. Installing the 4MM Tape Autoloader ................. 3-1
Remove System Unit Covers .............................. 3-1
4mm Tape Autoloader Installation ........................... 3-1
Chapter 4. Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Verifying Device Driver Installation ........................... 4-1
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Chapter 5. Using the 4mm DDS-2 Tape Autoloader ............... 5-1
Applying Power to the 4mm DDS-2 Tape Autoloader ................ 5-1
Loading a Magazine ................................... 5-2
Ejecting a Magazine ................................... 5-4
Forcing an Ejection .................................... 5-5
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Controls and Indicators .................................. 5-8
Chapter 6. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Head Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Appendix A. Communications Statements . . . . . . . . . . . . . . . . . . . . . A-1
Federal Communications Commission (FCC) Statement .............. A-1
European Union (EU) Statement ............................ A-2
International Electrotechnical Commission (IEC) Statement ............. A-2
United Kingdom Telecommunications Safety Requirements ............. A-2
Contents iii

Avis de conformité aux normes du ministère des Communications du Canada . A-4
Canadian Department of Communications Compliance Statement ......... A-4
VCCI Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Radio Protection for Germany .............................. A-4
iv 4mm DDS-2 Tape Autoloader Installation and User's Guide

Safety Information
DANGER
An electrical outlet that is not correctly wired could place hazardous
voltage on metal parts of the system or the devices that attach to the
system. It is the responsibility of the customer to ensure that the outlet
is correctly wired and grounded to prevent an electrical shock.
Before installing or removing signal cables, ensure that the power
cables for the system unit and all attached devices are unplugged.
When adding or removing any additional devices to or from the system,
ensure that the power cables for those devices are unplugged before
the signal cables are connected. If possible, disconnect all power
cables from the existing system before you add a device.
Use one hand, when possible, to connect or disconnect signal cables
to prevent a possible shock from touching two surfaces with different
electrical potentials.
During an electrical storm, do not connect cables for display stations,
printers, telephones, or station protectors for communication lines.
Safety Information v

vi 4mm DDS-2 Tape Autoloader Installation and User's Guide

About This Book
This book (when used with your system unit documentation) will help you install and
use the 4mm DDS-2 Tape Autoloader.
ISO 9000
ISO 9000 registered quality systems were used in the development and
manufacturing of this product.
Related Publications
This book refers to the documentation that came with your computer.
About This Book vii

viii 4mm DDS-2 Tape Autoloader Installation and User's Guide

Chapter 1. Overview
The 4mm DDS-2 Tape Autoloader is a digital tape backup-and-restore system that is
designed to hold up to six 120m tape cartridges in a removable magazine. The
autoloader can back up as much as 8GB of data on a single cartridge in about 2
hours or 48GB of data overnight without operator intervention.
The Autoloader implements DDS**-2 (Digital Data Storage-2) format and supports two
data-access modes: sequential and random . High-speed file retrieval and tape
swapping allow fast access to any file.
Note: There are 2 versions of the 4mm DDS-2 Tape Autoloader. This installation
and user's guide shows the tape autoloader in the horizontal mounting position.
Depending on your system unit type/model the tape autoloader may need to be
mounted in its vertical position. Note the only difference between the versions is the
front bezel printing and the LCD.
** Trademark of Sony Corporation.
Chapter 1. Overview 1-1

Inventory
In addition to this manual this package contains:
Tape Autoloader
Tape magazine - holds up to six digital tape cartridges
Note: The tape magazine may be shipped preloaded in the tape autoloader.
To remove the tape magazine, press the eject button after installation of the tape
autoloader is complete and the system unit has been powered up.
An accessory kit containing:
– Cleaning Cartridge
– Blank Data Cartridge
– Blank Test Cartridge
2-Drop Power cable
50 to 68 pin Interposer
Mounting hardware - 4 (M3 x 4) metric screws
Note: Locate the device mounting plate which was shipped in your system unit
media bays.
1-2 4mm DDS-2 Tape Autoloader Installation and User's Guide

Product Features
The 4mm DDS-2 Tape Autoloader has a cartridge-changer mechanism that:
Is compatible with the SCSI-2 Medium Changer command set
Has a SCSI-2 interface for the drive and changer
Has a standard 5-1/4 inch, full-height form factor
Requires no operator maintenance apart from regular head cleaning
Is easy to use
Takes an average of only 90 seconds to swap a tape cartridge and locate a file
The DDS-2 drive (embedded in the 4mm DDS-2 Tape Autoloader) has the following
features:
Built-in ability to compress and decompress data
A sustained streaming transfer rate of 510KB/second with no compression;
typically twice this rate using data compression
High reliability, with a mean-time-between-failure rate of more than 200,000
hours
A large data buffer (1MB) (MB equals approximately 1,000,000 bytes) to maintain
the host's transfer rate
Automatic error detection and correction
Read-after-write error detection and correction
Three levels of error correcting code (ECC)
Synchronous and asynchronous communication modes
Single-ended SCSI configuration
Electrically upgradeable firmware through SCSI, or through a Firmware Upgrade
tape
Compatibility with the SCSI-2 Sequential Access command set
No operator maintenance apart from regular head cleaning
Compatibility of format with other DDS-2 drives, and backward compatibility with
DDS-1 and DDS-DC drives.
Chapter 1. Overview 1-3

Software Requirements
The 4mm DDS-2 Tape Autoloader requires AIX Version 4.2 or later. The tape drive
can be used with the backup, restore, cpio, and tar commands by manually loading
and unloading.
The complete tape autoloader (tape drive and media changer) can be used for
save/restore operations with appropriate applications.
Handling the Tape Drive
Attention: Static electricity can damage your equipment. Leave the tape drive in its
static-protective bag until you are ready to configure or install it in your computer.
Drive Preparation
Attention:
Never remove, install, or transport the 4mm Tape Autoloader with tape cartridges
loaded in the magazine. They can become dislodged and jam the mechanism.
If the tape autoloader is moved from a colder or warmer environment than which
it will be installed, keep the drive in its packing and allow the package to reach
room temperature. This will avoid data loss or damage to the tape drive. Allow
one hour of acclimation for each 10 degrees C (18 degrees F) difference
between the ship/store temperature and the room temperature.
Handle the drive carefully and by its external metal chassis. Keep hands away
from printed circuit boards, components, and printed circuit (flex) cables.
Use a cushioned work surface if possible and do not drop the tape drive onto the
work surface.
1-4 4mm DDS-2 Tape Autoloader Installation and User's Guide

Recommendations
Attention: Tape cartridges that do not carry the proper DDS symbol cannot be
written to, and their use will cause the 4mm DDS-2 Tape Autoloader to report an
error.
Use only 4mm Digital Data Storage (DDS) cartridges.
Clean the tape path by using the recommended cleaning cartridge. Follow the
instructions on the cartridge.
Attention Use of other than recommended cleaning cartridges can damage your
tape drive and will void the drive warranty.
Back up and then discard any tape cartridge that repeatedly produces error
messages. The error information is in the system error log.
Do not open the door on the data cartridge that covers the tape. This door
protects the magnetic tape material from dirt, dust, and damage.
Do not operate in a dusty environment.
Do not touch the tape material. Any substance transferred to the tape by
touching it could cause loss of data.
Types of 4mm Tape Cartridges
The 4mm DDS-2 Tape Autoloader is shipped with three 4mm cartridges to help start
your tape operations immediately.
4mm Data Cartridge Use this non-labeled cartridge for saving or
restoring your programs or data. Additional data
cartridges can be ordered through your local sales
representative.
Cleaning Cartridge Use this cartridge for cleaning the 4mm tape path.
For more information, see “Head Cleaning” on
page 6-1. Additional cleaning cartridges can be
ordered through your local sales representative.
Test Cartridge Reserve this cartridge for use by service personnel,
or when running diagnostics.
Chapter 1. Overview 1-5

Tape Cartridge Compatibility
The 4mm DDS-2 Tape Autoloader is compatible with existing 4mm tape subsystems
that are designed to operate with Digital Data Storage approved media, which meet
the following standards:
For DDS
– American National Standard (ANSI) standard, X3.203-191, Helical-scan
Digital Computer Tape Cartridge, 3.81mm.
– European Computer Manufacturers Association (EMCA) standard,
EMCA-150, 3.81mm Wide Magnetic Tape Cartridge and DDS format.
For DDS2
– European Computer Manufacturers Association (EMCA) standard,
EMCA/TC17/93/20, 3.81mm Wide Magnetic Tape Cartridge for Information
Interchange Helical Scan Recording, DDS2 format.
You cannot change the density setting of the drive because the device reconfigures
itself automatically, depending on the media type installed, as follows:
Media Type Device Configuration
DDS Read-only (60m).
DDSllll Read/write in 2.0GB mode only (90m).
DDS2 Writes 4.0GB, reads in either density (120m).
Non-DDS Not supported. The cartridge will eject.
Setting the Write-Protect Tab on 4mm Tape Cartridges
The window on the tape cartridge controls write-protection. When the write-protect
tab of a tape cartridge is set (window open), information can be read from the tape,
but cannot be written to it. When the write-protect tab of a tape cartridge is not set
(window closed), information can be both written to and read from the tape. Trying to
write to a 4mm data cartridge with the window open causes an error.
1-6 4mm DDS-2 Tape Autoloader Installation and User's Guide

Environmental Considerations for 4mm Data Cartridges
Information in this section describes operating and storage conditions including
temperature, relative humidity, and maximum wet bulb data.
Attention: The manufacturer has specified a set of temperature and humidity ranges
in which the 4mm data cartridge can operate with ease. Only regular cleaning
procedures, as described in “Head Cleaning” on page 6-1 are required when
operating the cartridge within this range. The risk of possible data loss is increased if
4mm tape cartridges are operated, stored, or shipped outside the temperature or
humidity ranges shown in the following table.
Before using a cartridge, always let it adjust (acclimate) to the operating
environment. Do this by placing the cartridge with its container in the operating
environment for as long as it has been away from this environment or for 24 hours,
whichever is less.
Acclimation is necessary for any data cartridge that has been exposed to a different
humidity environment or a temperature change of 11°C or 20°F or more.
Operating Ranges Storage Shipping
Temperature 16°C to 32°C
(60°F to 90°F) 5°C to 32°C (40°F to 90°F) -40°C to 52°C (-40°F to 125°F)
Relative Humidity
(non-condensing) 20 to 80% 20 to 80% 5 to 80%
Maximum Wet Bulb 26°C (79°F) 26°C (79°F) 26°C (79°F)
Chapter 1. Overview 1-7

Operating in Harsh Environments
The 4mm DDS-2 Tape Autoloader is ideally suited to streaming operations, as
opposed to tape movement operations involving multiple stop/starts and random
searches. Streaming movement is beneficial and should be used whenever possible.
Any tape that has been used outside the ranges specified in the previous table for an
extended period of time (50 passes in 40 hours of nonstop operation) should not be
used as an archival tape. Exposure to the environment will deteriorate the magnetic
and physical strength of the tape. Do not store important data on a tape that has
been used outside the specified ranges; transfer the data to a new tape for reliable
archiving.
4mm Data Cartridge Erasure
Most bulk eraser devices do not have the capability to erase 4mm data cartridges.
To properly erase an 4mm data cartridge with a bulk eraser device, the erasure
rating must be at least 2000 oersted.
The 4mm DDS-2 Tape Autoloader erases residual data before writing new data on
the data tape.
Tape Cartridge Data Capacity
The 4mm tape cartridge capacity is defined as the amount of data that can be stored
on the cartridge. The following variables affect the amount of data that can be stored
on a tape cartridge:
Size of the data file
Number of file marks per file
Compatibility mode (2GB or 4GB)
Media rewrites
Nature of the data being stored. Text files are usually stored with greater
compression than binary files.
Cartridge format/length
1-8 4mm DDS-2 Tape Autoloader Installation and User's Guide

Chapter 2. Preparing for Installation
The installation process consists of:
Taking an inventory of all pieces necessary for installation
Switch and Jumper Settings
Planning your SCSI device layout
Setting the SCSI address of your SCSI tape autoloader
Installing the SCSI tape autoloader
Software Installation
Installation Requirements
To install the 4mm DDS-2 Tape Autoloader you need:
The 4mm tape autoloader and mounting hardware
The documentation that came with your system unit
The documentation that came with your 4mm tape autoloader
A 16-bit to 8-bit (50 to 68 pin) SCSI interposer if you are connecting the tape
drive to a 16-bit SCSI cable.
A flat-blade screwdriver.
Chapter 2. Preparing for Installation 2-1

Switch and Jumper Settings
Option Switches
The option switches are located on the back of the Autoloader. These switches must
be in the on position. The 4mm DDS-2 Tape Autoloader reads the option switches
at power-up time and during self-test.
2-2 4mm DDS-2 Tape Autoloader Installation and User's Guide

Configuration Switches
The configuration switches are located on the bottom of the Autoloader.
Switches 3 and 4 must be off , all of the other switches must be on . The 4mm DDS-2
Tape Autoloader reads the configuration switches at power-up time and during
self-test.
Chapter 2. Preparing for Installation 2-3

Planning your SCSI Device Layout
SCSI devices are attached to a SCSI adapter in a chain. Devices in the chain can
be internal (inside your system unit) or external (connected outside your system unit).
If you are connecting more than one SCSI device, it is important that you plan the
layout of your SCSI chain.
Note: At each end of the SCSI chain, a terminator is required.
Planning SCSI Addresses
Make sure no two SCSI devices have the same address, and that no device uses
the SCSI address 7, which is used by the SCSI adapter. If the system and adapter
supports the Wide (16 data bit, 68 conductor cable) SCSI interface, you may see
addresses in the range of 0 through 15.
Note: For addresses in the range of 0 through 7, priority is assigned in descending
address order. Refer to Table 2-1 for the priority associated with each SCSI
address.
Table 2-1. Data Access Priorities for SCSI Addresses
Highest Priority 7 Adapter
| 6
| 5
| 4
| 3
| 2
| 1
| 0
| 15
| 14
| 13
| 12
| 11
| 10
v 9
Lowest Priority 8
2-4 4mm DDS-2 Tape Autoloader Installation and User's Guide