
0 6 6 4 - C S H    IBM
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    2857|     |     |
Capacity form/unform  4027/ 4989 MB        Heads            |     |     |
Seek time   / track   9.8/ 1.6 ms          Sector/track  188|     |     |
Controller           SCSI2 SI/FAST         Precompensation
Cache/Buffer          1024 KB DUAL-PORTED  Landing Zone
Data transfer rate    5.220 MB/S int       Bytes/Sector      512
                     10.440 MB/S ext SYNC
Recording method     PRML 8/9                       operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |    -40 60
Power: sleep              W     Humidity     %         8 80    |      5 99
       standby            W     Altitude    km    -0.305  3.048| -0.305  9.144
       idle          25.0 W     Shock        g        10       |     35
       seek          29.0 W     Rotation   RPM      5400
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   ON THE FLY,REED SOLOMON
                                MTBF         h     375000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     CSA,FCC,IEC380,IEC435,IEC9...

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
IBM      0664-CSH  HARDWARE SPECIFICATION AS02-0012-02, 8/19/91




  +---------------------------------------------------------+
  |                                                         |
  |                                                         |
  |                                                         |
  |   Rear View                                             |
  |                                                         |
  |                                                         |
  | Option Block +--------------------------------1+-----+  |
  | +----------1 | 50-pin SCSI Connector          ||XXXXX|  |
  | +----------+ +--------------------------------+1-----+  |
  |                                                 Power   |
  +---------------------------------------------------------+






**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
IBM      0664-CSH  HARDWARE SPECIFICATION AS02-0012-02 8/19/1991

 Jumper Setting
 ==============

 Option Block Layout
 -------------------
 The Allicat S20 drive with a 50 pin SCSI connector contains a 2x11
 option block, which controls the following functions.

 - Target SCSI address (0-7)
 - Automatic motor start
 - Whether or not the target supplies SCSI termination power
 - LED driver
 - Write protect


    +-------------------------------- ADDRESS BIT 0/-MFG RESET
    |  +----------------------------- ADDRESS BIT 1
    |  |  +-------------------------- ADDRESS BIT 2/MFG INPUT
    |  |  |  +----------------------- N/C
    |  |  |  |  +-------------------- -AUTO START
    |  |  |  |  |  +----------------- BLANK POLARITY
    |  |  |  |  |  |  +-------------- N/C
    |  |  |  |  |  |  |  +----------- FUSED TERMPWR
    |  |  |  |  |  |  |  |  +-------- +LED
    |  |  |  |  |  |  |  |  |  +----- MFG Output
    |  |  |  |  |  |  |  |  |  |  +-- Write Protect WP
   ++--+--+--+--+--+--+--+--+--+--++
   |o  o  o  o  o     o  o  o  o  1|
   |22 o  o  o  o  o  o  o  o  o  o|
   ++--+--+--+--+--+--+--+--+--+--++
    +--+--+--+--+  ++-+  |  |  |  +-- GND
          |         |    |  |  +----- MFG TP
          |         |    |  +-------- -LED
          |         |    +----------- SCSI TERMPWR
          |         +---------------- N/C
          +-------------------------- GROUND

 NOTE
 All signal option lines can be driven from one ground line but the
 ground pins should only be used for driving option lines.

 NOTE
 The +/-LED signals are intended to directly connect to the two wires
 of an LED (Ligth Emitting Diode).

 NOTE
 The reserved address lines are used to retain compatibility with
 earlier products.


 Option Block Pin Descriptions
 -----------------------------
 +---+-------+--------------+------+---------------------------------+
 |Pin|Related|Pin Name      |Direc-|Pin Description                  |
 | # |Ground |              |ion   |                                 |
 |   |Pin    |              |      |                                 |
 +---+-------+--------------+------+---------------------------------+
 | 21| 22    |-Address Bit 0| In   |LSB of SCSI Address              |
 +---+-------+--------------+------+---------------------------------+
 | 19| 20    |-Address Bit 1| In   |SCSI Address                     |
 +---+-------+--------------+------+---------------------------------+
 | 17| 18    |-Address Bit 2| In   |MSB of SCSI Address              |
 +---+-------+--------------+------+---------------------------------+
 | 16| N/A   |N/A           | N/A  |N/A                              |
 +---+-------+--------------+------+---------------------------------+
 | 15| N/A   |N/A           | N/A  |N/A                              |
 +---+-------+--------------+------+---------------------------------+
 | 13| 14    |-Auto Start   | In   |If this pin is shunted to ground,|
 |   |       |              |      |then the drive will automatically|
 |   |       |              |      |start the motor. If this pin is  |
 |   |       |              |      |not shunted, then the motor will |
 |   |       |              |      |not start until the receipt of   |
 |   |       |              |      |the Start/Stop Unit SCSI Command.|
 +---+-------+--------------+------+---------------------------------+
 | 12| N/A   |N/A           | N/A  |N/A                              |
 +---+-------+--------------+------+---------------------------------+
 | 11| N/A   |Blank Polarity| N/A  |This pin position is used as a   |
 |   |       |              |      |polarity pin, and should be      |
 |   |       |              |      |filled.                          |
 +---+-------+--------------+------+---------------------------------+
 |  8| N/A   |SCSI Target   | N/A  |This pin connects to the         |
 |   |       |TermPwr       |      |appropriate pins on the device   |
 |   |       |              |      |SCSI connector to supply TermPwr |
 |   |       |              |      |for the SCSI bus. When shunted   |
 |   |       |              |      |to Fused Target TermPwr          |
 |   |       |              |      |sufficient current is supplied by|
 |   |       |              |      |the Target to terminate the SCSI |
 |   |       |              |      |bus by some termination scheme   |
 |   |       |              |      |outside the Target.              |
 +---+-------+--------------+------+---------------------------------+
 |  7| N/A   |Fused Target  | N/A  |This pin connects to a fused     |
 |   |       |TermPwr       |      |voltage source used to supply    |
 |   |       |              |      |SCSI TermPwr to the device SCSI  |
 |   |       |              |      |connector when the shunt to SCSI |
 |   |       |              |      |Target TermPwr is in place.      |
 +---+-------+--------------+------+---------------------------------+
 |  6| N/A   |LED Cathode   | N/A  |Ground side of LED               |
 +---+-------+--------------+------+---------------------------------+
 |  5| N/A   |LED Anode     | N/A  |+5VDC side of LED                |
 +---+-------+--------------+------+---------------------------------+
 |  4| N/A   |N/A           | N/A  |N/A                              |
 +---+-------+--------------+------+---------------------------------+
 |  3| N/A   |N/A           | N/A  |N/A                              |
 +---+-------+--------------+------+---------------------------------+
 |  1| 2     |Write Protect | In   |Inhibits customer data writes.   |
 +---+-------+--------------+------+---------------------------------+


 SCSI Target Address
 -------------------
 Any changes to the address portion of the option block will not be
 recognized except during a power on and after a reset, when the
 address bits are sensed.

   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | Bit 2 | Bit 1 | Bit 0 |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   |    1     | OPEN  | OPEN  | CLOSED|
   |    2     | OPEN  | CLOSED| OPEN  |
   |    3     | OPEN  | CLOSED| CLOSED|
   |    4     | CLOSED| OPEN  | OPEN  |
   |    5     | CLOSED| OPEN  | CLOSED|
   |    6     | CLOSED| CLOSED| OPEN  |
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+


 Auto Start
 ----------
 The -Auto Start signal will be used to determine if the spindles
 should be powered on following a power on or reset condition. Without
 the shunt in place, the spindles can only be spun up by SCSI command.


 Target SCSI Termination Power
 -----------------------------
 The Target TermPwr shunt will directly connect a fused voltage supply
 of termination power to the appropriate pins on the SCSI connector.
 This indication cannot be sensed by the initiator.


 Write Protect
 -------------
 The Write Protect feature allows the customer to insure that no
 customer data will be overwritten via SCSI command. The feature is
 controlled by a jumper on the Allicat S20 option block. The status
 of the jumper can be sensed via the MODE SENSE command, page 0
 (Vendor Unique), byte 9.

 If the Write Protect jumper is in place, the drive will generate a
 Condition Check Status for the following commands.

 - Write (6) command 0Ah
 - Write (10) command 2Ah
 - Write and Verify command 2Eh
 - Write Long command 2Eh
 - Reassign Blocks 07h
 - Format Unit 04h
 - Sync Cache 35h

 The sense data will show a sense key of Data Protect (7h) with a
 sense code and data of Write Protected (2700h). Although customer
 data will not be written, the drives reserved area will be updated
 with data such as mode select data, error logs, microcode loads, etc.


 SCSI Bus Termination Power
 --------------------------
 Termination power is optionally provided for systems that desire to
 use it. In order to use the Allicat S20 termination power, the user
 needs to install a jumper between pins 07 and 08 of the Option block.
 The jumper only needs to be installed on the last device on the SCSI
 bus (i.e. the file that is physically closest to the terminator).
 Allicat S20 can source up to 2.0 Amps of current at 5.0 Volts ( 5%)
 for termination power.



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
IBM      0664-CSH/ESH  HARDWARE SPECIFICATION AS02-0012-02, 8/19/91

 Notes On Installation
 =====================

 Installation direction
 ----------------------

     horizontally                           vertically
   +-----------------+             +--+                       +--+
   |                 |             |  +-----+           +-----+  |
   |                 |             |  |     |           |     |  |
 +-+-----------------+-+           |  |     |           |     |  |
 +---------------------+           |  |     |           |     |  |
                                   |  |     |           |     |  |
                                   |  |     |           |     |  |
 +---------------------+           |  +-----+           +-----+  |
 +-+-----------------+-+           +--+                       +--+
   |                 |
   |                 |
   +-----------------+


 Mounting
 --------
 The drive can be mounted with any surface facing down as listed
 below.

 - Bottom Side Down
 - Top Side Down
 - Right Side Down
 - Left Side Down
 - Rear Side Down
 - Front Side Down

 Four mounting holes are provided on the bottom of the drive, and two
 mounting holes are provided on each side of the drive.

 The torque applied to the mounting screws must be 1.0 Newton-meters
   0.1 Newton-meters.

 The maximum screw penetration is 7.5 millimeters.


 Clearances
 ----------
 The Allicat S20 drive contains all sway space internal to the form
 factor. Therefore, no sway space clearance is required. However,
 adequate clearance is required around the drive to assure the airflow
 needed to maintain component temperatures.


 Power Connector
 ---------------
 The DC power connector is designed to mate with AMP part 1-480424-0
 using AMP pins part 350078-4 (strip) or part 61173-4 (loose piece),
 or their equivalent.

   +------------+   pin 1    +12 VDC
   | 1  2  3  4 |   pin 2    +12 Volts Return
   +------------+   pin 3    + 5 Volts Return
                    pin 4    + 5 VDC


 50-Pin SCSI Bus Connector
 -------------------------
 The SCSI signal connector is a 50-pin connector, MOLEX p/n 70247
 (right angle) meeting ANSI/SCSI specification.


 68-Pin SCSI Bus Connector
 -------------------------
 The SCSI signal connector is a 68-pin connector HONDA part number
 PCS-XE68SLFDUNG1-HSU2 meeting ANSI/SCSI specifications.


 Compatibility of 50 Pin and 68 Pin SCSI Connectors
 --------------------------------------------------
 Note that the "P" connector is not compatible with the 50-pin "A"
 connector as defined in the ANSI/SCSI-2 standard. Therefore system
 cables used with 50 pin products cannot be plugged directly into the
 Allicat S20 68 pin models.

 Despite the difference in connector, the Allicat S20 68 pin models
 are electrically compatible with Allicat S20 50 pin models and other
 50 pin single ended SCSI products and therefore can coexist on the
 same bus. In order to do so, the difference in connector types would
 need to be accounted for in the cable.


 Single Ended SCSI Cable
 -----------------------
 The Allicat S20 disk drive uses single ended drivers and receivers
 which will permit cable lengths of up to 6 meters (19.68 feet). It
 should be noted however that users who plan to use Allicat S20 in
 fast mode should follow all of the SCSI-3 guidelines for single ended
 fast operations. This may include a cable length of less than 6
 meters.

 The SCSI-2 standard states that the total stub of the cable must not
 exceed 0.1 meters. This drive has a maximum internal stub length of
 0.082 meters on all SCSI signals. To remain compliant with ANSI, the
 SCSI bus cable must not add more than 0.018 meters addtional stub
 length to all SCSI signals.


 Single-Ended SCSI Bus Termination
 ---------------------------------
 Allicat S20 has no internal SCSI bus terminators. The system is
 responsible for properly terminating the SCSI bus. A regulated 110
 Ohm terminator is recommended for reliable fast operations (i.e.
 transfer speeds greater than 5MB transfer/sec.). Split resistor or
 regulated terminations may be used for systems that do not plan data
 transfers. Some of the terminator possibilities for Allicat S20 are
 listed in the following table.
 +---------------+--------------------------+------------------------+
 |Data Transfer  | 50 Pin Model Terminators |68 Pin Model Terminators|
 |Rates          |                          |                        |
 +---------------+--------------------------+------------------------+
 |less than 5M   | AMP 88-4163-081-1        |Data Mate DM2050-02-68S |
 |transfers/sec  | Data Mate DM500-06-0     |Data Mate DM2050-02-68R |
 |               | Data Mate DM500-06-R     |                        |
 +---------------+--------------------------+------------------------+
 |more than 5M   | Data Mate DM500-06-R     |Data Mate DM2050-02-68R |
 |transfers/sec  |                          |                        |
 +---------------+--------------------------+------------------------+


 SCSI Bus Termination Power
 --------------------------
 Termination power is optionally provided for systems that desire to
 use it. In order to use the Allicat S20 termination power, the user
 needs to install a jumper between pins 07 and 08 of the Option block.
 The jumper only needs to be installed on the last device on the SCSI
 bus (i.e. the file that is physically closest to the terminator).
 Allicat S20 can source up to 2.0 Amps of current at 5.0 Volts ( 5%)
 for termination power.


 Single Ended SCSI Bus Recommendations For Noise Reduction
 ---------------------------------------------------------
 The SCSI commitee has spent a large amount of resource looking into
 what needs to be done to assure SCSI devices will work as specified
 in the SCSI-2 standard. As a result of this, the committee is
 recommending what is being called the 123 approach to reducing noise
 problems. This approach is:

 1. Use the regulated 110 ohm terminator
 2. Use AWG 28 polyolefin shielded cables
 3. Make sure data and parity are on the outer ring of the cable and
    that REQ and ACK are in the core of the cable.


 Single Ended SCSI Bus Electrical Characteristics
 ------------------------------------------------
 The Western Digital WD33C95 SCSI Bus Interface Controller is used in
 this drive.
  +------+--------------------------+---+---+-----+---------------+
  |Symbol|Input Characteristics     |Min|Max|Units|Conditions     |
  +------+--------------------------+---+---+-----+---------------+
  |Vol   |Low level output voltage  |   |0.4| V   |lout = 48.0 mA |
  +------+--------------------------+---+---+-----+---------------+
  |Voh   |High level output voltage |2.5|   | V   |lout = -400  A |
  +------+--------------------------+---+---+-----+---------------+
  |Vil   |Low level input voltage   |0.0|0.8| V   |               |
  +------+--------------------------+---+---+-----+---------------+
  |Vih   |High level input voltage  |2.0|5.5| V   |               |
  +------+--------------------------+---+---+-----+---------------+
  |Iil   |Low level input current   |   |10 |  A  |               |
  +------+--------------------------+---+---+-----+---------------+
  |Iih   |High level input current  |   |50 |  A  |               |
  +------+--------------------------+---+---+-----+---------------+
  |Vihys |Input hysterisis          |0.3|   | V   |               |
  +------+--------------------------+---+---+-----+---------------+
  |Ci    |Input capacitance         |   |25 | pF  |               |
  +------+--------------------------+---+---+-----+---------------+
 NOTE  Ta = 0 to 70 deg. C



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
IBM      0664-CSH/-ESH  HARDWARE SPECIFICATION AS02-0012-02 8/19/91


 ECC Implementation
 ------------------
 A Reed-Solomon Error Coreecting Code of degree 5 with 3-way
 interleaving is used to cover the physical blocks. Burst errors of up
 to 6 bytes are detected and corrected properly.


 Seek Time
 ---------
 Single cylinder     0.6 ms (Read)
                     2.5 ms (Write)
 Average (weighted)  9.4 ms (for Read)
                    11.4 ms (for Write)
                     9.8 ms (assumes 4 reads to 1 write)
 Full stroke        18.5 ms (for Read)
                    20.5 ms (for Write)


 Microcode Defect Rate
 ---------------------
 The loadable microcode, (including ROS), defect rate will be less
 than or equal to 0.150 TVUA/KCSI for the 60 month product life.

 TVUA/KCSI refers to the number of valid APARS per 1000 lines of
 microcode. An APAR is the process whereby microcode problems are
 documented, trackes, and resolved.


 Required Testing For Allicat S20 Approval
 -----------------------------------------
 Allicat S20 drive products are only supplied to using systems that
 meet the usage requirements for the drive. General Availability (GA)
 is not granted. Allicat S20 drives receive a Unit LA (Limited
 Availability) and a Unit GA, but system usage is controlled by IBM
 TUC codes. The two TUC codes that are given are: TUC E and TUC C.
 TUC E may be given after unit LA for system testing. This code means
 that testing is incomplete and quantities may/may not be limited. TUC
 C is given after all system tests pass to the satisfaction of the
 system and drive developer and before system First Customer Ship
 (FCS).



**********************************************************************
                      G   E   N   E   R   A   L
**********************************************************************
IBM       SCSI INSTALLATION

 SCSI Installation Guide Generic

 Installation requirements
 -------------------------
 To install a drive inside your computer or in an external storage
 enclosure for SCSI devices, you must have:

 1 The documentation that came with your computer or storage
   enclosure.

 2 The documentation that came with your hard drive.

 3 A small, flat blade screwdriver.

 4 A SCSI controller, which is either built into the system board or
   on an adapter inside your computer.

 5 An installation kit, if it is required for your computer. Contact
   your place of purchase if you are not sure.

 6 If you are installing this into a PS/2 computer, you will also need
   the up-to-date backup copy of your reference diskette and
   diagnostic diskette.

 WARNING: Do not open the static-protective bag containing the drive
 until instructed to do so. Static electricity can damage the drive.


 Hardware and software considerations
 Operating system
 ----------------
 The operating system and hardware are two of the factors that
 determine the number of drives a computer can support. The manuals
 for your computer and operating system can help you to determine the
 number and type of hard disk drives you can use.


 Power supply
 ------------
 Two factors that determine the number of internal drives that a
 computer or SCSI storage enclosure can support are:

 1 The available current of the power supply

 2 The nominal operating current of each drive installed

 Most computer power supplies have output over-current protection. If
 the total allowed current is exceeded, the power supply shuts down.
 The computer must be turned off and turned on again.

 SCSI ID Each SCSI device connected to a SCSI adapter must be assigned
 a unique SCSI identification number (ID). The ID you assign to this
 device depends on the number of SCSI devices connected to the SCSI
 adapter and the SCSI IDs already assigned to those devices.

 Note: All IBM SCSI controllers support SCSI IDs 6 through 0. (ID 7 is
 used for the SCSI controller.) Some SCSI controllers support SCSI IDs
 15 through 8. If your SCSI controller supports more than seven
 devices, then you can use SCSI IDs 15 through 8. If you are not sure
 if your SCSI controller supports more than seven devices, refer to
 the documentation that came with your SCSI controller for
 information.

 If you have an IBM PS/2 computer, you can view your SCSI ID settings
 by accessing the system programs. From the main menu, select Set
 configuration. The select Set and view SCSI configuration.
 Other computers might have utility programs that enable you to view
 the SCSI configuration, or you might have to physically inspect the
 installed SCSI devices to see how the IDs are set. For more
 information, refer to the documentation that came with your computer
 or SCSI controller.


 Handling precautions
 --------------------
 1 Turn off all attached devices first; then turn off the computer.

 2 Unplug all the power cords from electrical outlets before starting
   installation.

 3 Disconnect all power cables from your computer and attached devices
   before starting installation.

 4 Limit your movement. Movement can cause static electricity to build
   up around you.

 5 Handle the drive carefully and by the edges.

 6 Do not touch any exposed printed circuitry.

 7 Prevent other people from touching the components or the drive.

 8 When you are installing the drive, touch the static-protective
   package containing the drive to a metal expansion-slot screw or
   other unpainted metal surface on the computer, for at least 2
   seconds. (This drains static electricity from the package and your
   body.)

 9 When possible, remove the drive and install it directly into the
   computer without setting it down. If this is not possible, place
   the drive, component side up, on the static-protective bag on a
   flat surface until the drive is installed.

 10 Do not place the drive on the computer cover or on a metal table.


 Installing the drive
 --------------------
 These instructions guide you as you install the drive inside your
 computer or storage enclosure.

 Step 1. Setting the jumpers and terminators

 Note: Be sure you have chosen the SCSI ID before continuing. If you
       did not yet choose the SCSI ID, go to "SCSI IDs" above, then
       return here. Follow these steps to set the SCSI ID to match
       your chosen SCSI ID.

 1 Touch the static-protective bag containing the drive to a metal
   expansionslot cover on the computer. This drains any static
   electricity from the package and your body.

 2 Remove the drive from the static-protective bag, holding the drive
   by the edges. Do not touch any exposed components on the drive.

 3 Place the drive on the bag, on a flat surface.

 4 When the Auto Start feature is enabled, the hard disk drive motor
   starts as soon as the computer is turned on. Locate the Auto Start
   jumper by referring to the documentation that came with your drive.
   If the Auto Start jumper is not in place, the hard disk is started
   by a command from the SCSI controller. For drives installed in
   IBM computers or storage enclosures ensure that this jumper is off.
   The hard disk drive is started in a staggered sequence. This
   reduces the start-up load on the power supply. For non-IBM
   computer, refer to the documentation that came with your
   computer for further information.

 5 Set the SCSI ID that you selected. To remove a jumper, pull it
   straight off. To install a jumper, line up the two holes in the
   jumper with the appropriate two pins on the drive. Then push the
   jumper onto the pins until it is completely seated and covers
   both pins.

 6 Store any jumpers you do not use in a safe place, in case you need
   to change the SCSI ID for this drive later. WARNING: If you have
   extra jumpers, do not store them on any of the extra pins on the
   connector. Storing them on a set of pins could damage the drive.

 Step 2. Connecting the terminator
 The location of the drive you are installing inside the computer or
 storage enclosure determines whether you need to connect a terminator
 or put a jumper on the Enable Active Termination pins. Read the
 information in the following table to determine if you must install
 the terminator. For more information about termination, refer to the
 documentation that came with your computer.

 Note: A SCSI chain of devices consists of multiple SCSI devices
 connected by a SCSI cable to a SCSI controller.

 If the hard disk drive is:                   Then:
 The last physical device on a SCSI chain of  Install the terminator
 devices inside the computer.

 The last physical device on a SCSI chain of  Install the terminator
 devices inside an external storage enclosure.

 Step 3. Enabling term power
 If your drive has a jumper for term power and your SCSI controller is
 suppling term power, (check with the manufacturer of your controller)
 then you do not need to enable the term power. The jumper should be
 off. For help in locating the term power jumper, refer to the
 documentation that came with your drive.

 Step 4. Installing the drive
 For the specific information on installing a hard disk drive, refer
 to the documentation that came with your computer. You will be
 required to mount the drive inside your computer, and connect signal
 and power cables to the hard drive. When installed in an enclosure,
 the drive is attached by cable to the external connector of a SCSI
 controller. The controller can be either on a SCSI adapter or built
 into the system board inside of your computer.

 Note: Be sure to use the correct screws provided with your drive.
 Using the wrong ones might cause damage to the drive.

 Step 5. Completing the installation procedure
 The installation of the drive is complete. Reinstall the cover on the
 computer or storage enclosure. Store these instructions and any extra
 parts in a safe place in case you change your configuration.

 After installing your hard disk drive, use the information that came
 with your computer to reconfigure your system. When you power on your
 system, turn on all attached devices first; then turn on the
 computer.

 If you have any problems at this point, turn off all attached
 devices; then, turn off the computer and check that:

 1 The cables are installed correctly

 2 No options or cables are loose

 3 The SCSI ID is properly set

 4 No two SCSI drives have the same SCSI ID

 5 The terminators are properly installed

 Turn on all attached devices; then, turn on the computer. If you
 still have a problem, refer to the troubleshooting information in the
 documentation that came with your computer.

 Step 6. Update configuration
 Whenever you add or remove an option from your computer, you must
 update the configuration information. Your computer might have an
 automatic configuration program, or you might have to follow a
 specific procedure. For more information, refer to the documentation
 that came with your computer.

 Step 7. Preparing the drive for use
 Having successfully installed the hard disk drive, you need to
 prepare it for use. Depending on the operating system you are using,
 you might need to partition then format the hard disk. Refer to the
 documentation that came with your operating system for information on
 how to format your new drive. To make the drive just installed your
 primary drive, you might need to create a new system partition on the
 drive. For information on creating a new system partition, refer to
 the documentation that came with your operating system.


 Troubleshooting
 ---------------
 You might be able to solve a problem yourself. Before calling IBM,
 you might want to try some or all of the following troubleshooting
 procedures.

 1 Remove and reattach all drive cables

 2 Remove and reseat the drive

 3 Place the drive in a different slot, if one is available


 4 If your drive contains jumpers or switches, check that they are set
   as specified

 5 Reread any software instructions; be sure software settings are
   correct

 6 Inspect the drive for damage, such as bent pins

 7 Check the computer manual for instructions about the installation
   of upgrades. Look for a section about system setup or system
   configuration. Follow all procedures.

 8 After completing these steps, reassemble the computer and connect
   the power cord.

 If you are still having problems and want to call IBM technical
 support, have available as much of the following information as
 possible:

 1 Drive model or P/N and description

 2 Computer manufacturer and model

 3 Exact wording of error message (if any)

 4 Description of the problem

 5 Hardware and software configuration information for your system
   If possible, be at your computer. Your technical support rep might
   want to walk you through the problem during the call.


