1 0 5 0   A V   L T    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    2360|     |     |
Capacity form/unform  1012/ 1266 MB        Heads           9|     |     |
Seek time   / track  10.0/ 1.5 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST/AV      Precompensation
Cache/Buffer           512 KB WRITE/PARITY Landing Zone
Data transfer rate    4.000 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method                                    operating  | non-operating
                                                  -------------+--------------
Supply voltage     -            Temperature *C         5 40    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 90
       standby            W     Altitude    km    -0.061  3.048| -0.305 15.240
       idle               W     Shock        g         1       |     20
       seek          30.0 W     Rotation   RPM      5400
       read/write         W     Acoustic   dBA        36
       spin-up            W     ECC        Bit   64
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CSA,FCC,TUV,UL1950

Jumpers

MICROPL. AV LT SERIES INSTALLATION GUIDE 1993 200259 REV. A IBM PC

Installation Guide for IBM PC & Compatible
==========================================

Daisy Chain Option Kit
----------------------
The MICRODISK AV LT subsystem will normally be last SCSI device on
the daisy chain. However, if you wish to daisy chain your MICRODISK
AV LT subsystem to other SCSI devices, you will need one Daisy Chain
Option Kit. This kit includes one each of the following items:

- SCSI System Cable (right angle connector)
- Daisy Chain (DCO) SCSI Backplane Cable
- MHA Rear Cover

Two SCSI system cables are available. Both cables have a Centronics
50-pin connector at the MICRODISK AV LT end, and either a Centronics
50-pin or mini-SCSI connector at the other end.

NOTE
Connect the SCSI system cable's right angle connector to the back of
the module.

Using the Daisy Chain Option Kit
--------------------------------
The MICRODISK AV LT subsystem will normally be the last SCSI device
on the daisy chain. However, if you wish to daisy chain your MICRO-
DISK AV LT subsystem to other SCSI devices, you will need one Daisy
Chain Option Kit.

To allow your MICRODISK AV LT subsystem to daisy chain to other SCSI
devices, you will remove the SCSI Backplane Cable from a MICRODISK AV
LT module (usually the TOP module in the stack), and replace it with
a Daisy Chain SCSI Backplane Cable. You will then install the MHA
rear cover, and connect the rightangle connector end of the SCSI
system cable to the Daisy Chain SCSI Backplane Cable connector, and
the other end (50-pin Centronics connector) to another SCSI device
outside the MICRODISK AV LT subsystem.

Install

MICROPL. AV LT SERIES INSTALLATION GUIDE 1993 200259 REV. A IBM PC

Installation Guide for IBM PC & Compatible
==========================================

Cables/Cords
------------
MICRODISK AV LT SCSI cables and AC power cords are manufactured to
the industry standard for this type of application. MICRODISK AV LT
module interconnect cables and cords have specific design features to
maintain both aesthetics and uncompromising performance.

Failure of any single power cord or SCSI cable will not cause data to
be lost. Failure of a single cord or cable may sometimes cause all
disk drive access to cease, but should never cause data stored on a
MICRODISK AV LT drive to be lost.

Getting Started
---------------
There are several kits that may be shipped for assembly and installa-
tion of a MICRODISK AV LT subsystem. The minimum MICRODISK AV LT
subsystem requires at least:

- One MICRODISK AV LT Module Kit.
- One MICRODISK AV LT System Configuration Kit.
- One SCSI/Power Cable Kit.
- One SCSI host adapter.

Depending on the configuration you may also need:

 - Additional SCSI host adapters.
 - One or more MICRODISK AV LT Module Kit(s).
 - One or Expansion Kit(s).
 - One or more MICRODISK AV LT Multiple Host Adapter (MHA) Option
   Kit(s) .
 - One or more MICRODISK AV LT Daisy Chain Option Kit(s).

CAUTION
Do not twist cable or cord connectors during unpacking or assembly;
damage may occur.

MICRODISK AV LT Module Kit
--------------------------
A MICRODISK AV LT Module Kit includes one each of the following
items:

- MICRODISK AV LT Module
- Front Cover
- Rear Cover
- Hardware Registration Card
- Read First Document

To increase available storage capacity, modules may be assembled in a
"stack".

If you use more than nine modules in your MICRODISK AV LT subsystem,
new stacks should be created to accommodate the additional modules.

NOTE
The maximum recommended number of modules in each stack is nine.

Only seven SCSI devices can be connected to a single host adapter
If you have more than seven modules in your stack, you must install a
second host adapter and use a Multiple Host Adapter (MHA) Option Kit.

If you create more than one stack, you will need one Expansion Kit
and one SCSI/Power Cable Kit for each additional stack you create.

System Configuration Kit
------------------------
MICRODISK AV LT subsystems are assembled with the components included
in the MICRODISK AV LT System Configuration Kit, Module Kit(s), and
SCSI/Power Cable Kits. One System Configuration Kit is required per
MICRODISK AV LT subsystem.

The MICRODISK AV LT System Configuration Kit includes one each of the
following items:

- Top Cover
- SCSI Terminator
- Base Assembly (with Power Switch)
- Read First Document
- Assembly and Installation Guide.

SCSI/Power Cable Kit
--------------------
One SCSI/Power Cable Kit is needed per stack. There are six types of
cable kits to address the Centronics SCSI Connector (ISA) or mini-
SCSI Connector (EISA/MCA) and three types of AC Power Cords
available: U.S., U.K., or European:

- U.S. Standard SCSI/Power Cable Kit
- U.S. Mini-SCSI/Power Cable Kit
- U.K. Standard SCSI/Power Cable Kit
- U.K. Mini-SCSI/Power Cable Kit
- European Standard SCSI/Power Cable Kit
- European Mini-SCSI/Power Cable Kit

Each type of SCSI/Power Cable Kit includes one each of the following
items:

- SCSI System Cable (Centronics SCSI)
- AC Power Cord

Expansion Kit
-------------
One Expansion Kit is necessary for every new stack you create.

An Expansion Kit includes one each of the following items:

- Top Cover
- SCSI Terminator
- Base Assembly (with Power Switch)

Multiple Host Adapter Option Kit
--------------------------------
One MHA Option Kit, required for each additional host adapter used
in any single stack, includes one each of the following items:

- SCSI System Cable (right angle connector)
- MHA SCSI Backplane Cable
- SCSI Terminator
- MHA Rear Cover

Two SCSI system cables are available. Both cables have a Centronics
50-pin connector at the MICRODISK AV LT end, and either a Centronics
50-pin, mini-SCSI, or mini-SCSI connector at the host adapter end.

NOTE
Connect the SCSI system cable's right angle connector to the back of
the module.

 Compatible SCSI Host Adapters
 -----------------------------
 Your computer needs at least one SCSI host adapter in order to
 communicate with modules in a MICRODISK AV LT subsystem. If you need
 a SCSI host adapter or have any questions, please contact your
 dealer. The following is a table showing the recommended MICRODISK AV
 LT compatible SCSI host adapters:
 +----------------+--------------------------------------+
 |                |              Architecture            |
 |Company         |    ISA       |    EISA     |  MCA    |
 +----------------+--------------+-------------+---------+
 |ADAPTEC         |AHA1540B/42B  |AHA1740/42A* |AHA1640* |
 |                |AHA1540C/42C  |             |         |
 +----------------+--------------+-------------+---------+
 |ALWAYS TECH.    |IN2000*       |             |         |
 +----------------+--------------+-------------+---------+
 |BUSTEK/BUSLOGIC |BT540/42      |BT740/42*    |         |
 +----------------+--------------+-------------+---------+
 |DPT             |PM2011        |PM2012B/90   |         |
 |                |              |PM2012B/95   |         |
 +----------------+--------------+-------------+---------+
 |DTC             |DTC3180A/3280A|DTC3190      |         |
 |                |              |DTC3290      |         |
 +----------------+--------------+-------------+---------+
 |FUTURE DOMAIN   |TMC1660*      |             |         |
 |                |TMC1670*      |             |         |
 |                |TMC1680*      |             |         |
 +----------------+--------------+-------------+---------+
 |MYLEX           |              |DCE376*      |         |
 +----------------+--------------+-------------+---------+
 |ULTRASTOR       |ULTRA14F*     |ULTRA24F*    |         |
 +----------------+--------------+-------------+---------+

 * These host adapters do not accept the standard 50-pin SCSI
   connector cable. Please contact your reseller to obtain the
   appropriate cable if you have one of these host adapters.

 Host Adapter Considerations
 ---------------------------
 - One MHA Option Kit is required for each additional host adapter you
   add to an existing stack.

 - When installing host adapters, ensure that there are no port
   address or IRQ conflicts with other cards already installed or
   planned for installation. Refer to your host adapter documentation
   for specific details.

MICRODISK AV LT Assembly
------------------------
A MICRODISK AV LT subsystem may be as small as one module, or you can
add modules to increase storage capacity and create multiple stacks
if you so desire.

The minimum MICRODISK AV LT configuration requires on MICRODISK AV LT
Module Kit, one System Configuration Kit, one SCSI cable, one power
cord, and one SCSI host adapter.

Terminator
----------
The terminator must installed in the last module in the chain for
each SCSI bus (Host Adapter).

Features

MICROPL. AV LT SERIES INSTALLATION GUIDE 1993 200259 REV. A IBM PC

MICRODISK AV LT Series Disk Drives
----------------------------------
Each module in a MICRODISK AV LT subsystem contains a MICRODISK AV LT
Series disk drive. MICRODISK AV LT Series disk drives are engineered
specifically for multimediam high-end graphics, and digital audio/
video applications.

MICRODISK AV LT Series disk drives have the highest minimum sustained
data rate in the industry in their class at 3.0 MB/sec, and a maximum
sustained uninterrupted data rate of 2.9 MB/sec. Industry standard
high capacity data processing drives are not designed for high
sustained, uninterrupted data rates - factors which are required for
real-time recording and playback of digital audio/video data.
Standard drives perform short, random "burst" transfers, leaving gaps
in the data stream.

MICRODISK AV LT Formatting/Partitioning
---------------------------------------
Your MICRODISK AV LT subsystem modules need to be formatted and
partitioned before they can be used for data storage. To perform
these functions, use the disk formatting/partitioning utility
program(s) that you received as part of your operating system
software.
The utilities prepare your MICRODISK AV LT modules for use. Under
normal circumstances you will only need to format and partition each
MICRODISK AV LT module once.

NOTE
Because each module in a MICRODISK AV LT stack is a separate,
independent SCSI device, you must format and partition each MICRODISK
AV LT module separately.

Formatting the Hard Disk
------------------------
Formatting lays down distinct patterns on the disk which set up the
disk's organizational structure. You normally need to format the disk
only once.

Installing Partitions
---------------------
Partitioning prepares a hard disk for use by the PC. Partitions allow
you to divide the space available on the hard disk into separate
areas which appear on the desktop as separate logical disk drives
(volumes). This allows more flexible management of files (i.e., you
can use one partition for word processing, another for database work,
etc.).

Management of back-up also becomes easier with a wellorganized and
partitioned hard disk. A large hard disk with many small files takes
up a lot of disk space because of the way the filing system allocates
disk space. You can save space by partitioning the hard disk into
smaller volumes.

Carefully plan your partitions, as you cannot change partitions with-
out erasing your data. If you choose to alter the sizes or types of
partitions, you should:

1. Back up all your files
2. Make partitioning changes
3. Restore the files to their new volumes.

CAUTION
Remember, you can change partitions later, but all the information
stored on them will be lost. Make sure you have all data from these
partitions backed-up before changing the partitions.

It is not necessary to reformat the disk to redefine the partitions.

MICRODISK AV LT Operation
-------------------------
The MICRODISK AV LT subsystem MUST be turned on prior to, or at the
same time as, your computer.

The MICRODISK AV LT subsystem MUST be turned on whenever your
computer is on.

General

MICROPOL. AV LT

What is an AV Drive?
--------------------
Today's demanding digital video and audio applications require disk
drives to sustain a pre-determined minimum data transfer rate.
Any interruptions in this data rate are detrimental to AV
applications that require constant delivery of data at 30 frames per
second minimum. In standard drives utilized for data processing
requirements, the error correction and thermal calibration methods
employed are not optimized for continuous delivery of data. These
routine housekeeping tasks will procedure gaps in the data stream as
long as 850 ms, resulting in jumps, gaps, and stutters in motion and
sound when used in most AV applications.

(MICROPOLIS 10/96)

Installation Guide for IBM PC & Compatible
==========================================

- SCSI System Cable (right angle connector)
- Daisy Chain (DCO) SCSI Backplane Cable
- MHA Rear Cover

Two SCSI system cables are available. Both cables have a Centronics
50-pin connector at the MICRODISK AV LT end, and either a Centronics
50-pin or mini-SCSI connector at the other end.

NOTE
Connect the SCSI system cable's right angle connector to the back of
the module.

Installation Guide for IBM PC & Compatible
==========================================

Getting Started
---------------
There are several kits that may be shipped for assembly and installa-
tion of a MICRODISK AV LT subsystem. The minimum MICRODISK AV LT
subsystem requires at least:

- One MICRODISK AV LT Module Kit.
- One MICRODISK AV LT System Configuration Kit.
- One SCSI/Power Cable Kit.
- One SCSI host adapter.

Depending on the configuration you may also need:

 - Additional SCSI host adapters.
 - One or more MICRODISK AV LT Module Kit(s).
 - One or Expansion Kit(s).
 - One or more MICRODISK AV LT Multiple Host Adapter (MHA) Option
   Kit(s) .
 - One or more MICRODISK AV LT Daisy Chain Option Kit(s).