
S T 5 1 0 8 0 N   M E D A L . 1 0 8 0    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    4826|     |     |
Capacity form/unform  1080/      MB        Heads           4|     |     |
Seek time   / track  12.5/ 3.5 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST         Precompensation
Cache/Buffer           128 KB MULTI-SEGMEN Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 70
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle           5.0 W     Shock        g         2       |     10
       seek           7.1 W     Rotation   RPM      5400
       read/write     5.1 W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates


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SEAGATE  ST51080N  INSTALLATION GUIDE 36325-001 8/98

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XXI
  |                                                         |XXN
  |                                                         |XXT
  |                                                         |XXE
  |                                                         |XXR  J1
  |                                                         |XXF
  |                                                         |XXA
  |                                                         |XXC
 +++                                                        |XXE
 | |J8                                                      |XX
 | |                                                        |XX
 | |                                                        |  1
 +++1                                                       |XX J3
  |                                                         |XX Power
  +---------------------------------------------------------+  1




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SEAGATE  ST51080N MEDALIST 1080SL  INSTALLATION GUIDE 36325-001 8/95

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


 X = Factory default


 Front View

            +------------------ SCSI ID's (Default ID3, none for ID0)
            |   +-------------- RESERVED
 (TOP)      |   | +------------ Remote LED (9-,10+)
          +-+-+ | | +---------- RESERVED
          4 2 1 | | |         +22         +34
         ++-+-+-+-+-+---------+-----------++
 J8      |o o o o o o   o o o o-o o o-o o-o|
        -1o o o o o o o o o o o-o o o o o o+------PWA----------
         +------------+-+-+-+-+-+-+-+-+-+-++
                      | | | | +++ +-+-+-+-+
  (BOTTOM)            | | | |  |      +-----  RERSERVED
     pin-14 removed --+ | | |  +------------  Terminator power
                        | | |                 see detail below -----+
                        | | +---------------  Terminator disable    |
                        | +-----------------  Parity Enable(default)|
                        +-------------------  Remote Start          |
                          Spare jumpers stored on pins 28-30, 32-34 |
     Terminator Power (4 settings)----------------------------------+

        22    24    1.  23 & 24  Power from drive power connector
          o--o      2.  21 & 23  Power from SCSI bus
                    3.  21 & 23  Power from drive power connector and
          o--o          22 & 24  to SCSI bus (default, 2 jumpers)
        21    23    4.  22 & 24  Power to SCSI bus only


 SCSI ID
 -------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | ID4   | ID2   | ID1   |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    2     | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+
   | X  3     | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+
   |    4     | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    5     | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    6     | CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+


 Your Seagate drive is shipped by the factory configured as SCSI
 ID 3-jumpers are attached to pins 3 and 4 and pin 5 and 6. You
 must reconfigure the SCSI ID if another device is assigned SCSI
 ID 3 or if you are making the drive the bootable drive. The
 bootable drive must be Drive C. It must be assigned the ID
 number your SCSI adapter recognizes as the first position on the
 bus. Usually, this is SCSI ID 0 (refer to your SCSI host adapter
 documentation).

 If installing your new drive puts more than two drives on the bus,
 your SCSI adapter may require that you install a device driver or
 that you reconfigure its onboard BIOS. Refer to your SCSI
 adapter's user guide for instructions on how to install the third
 drive. If a device driver is required, it will be provided by the
 SCSI adapter manufacturer.


 Remote LED
 ----------
 You can connect a remote LED to the drive using pins 9 and 10
 on jumper block J8. Connect the LED ground wire (usually the
 black wire) to pin 9.


 Remote start
 ------------
 This setting causes the drive to wait for a specific
 command from the host before it starts or stops the spindle motor.
 Parity enable. Parity is a method that is sometimes used for error
 detection. The drive is shipped with parity enabled.


 Terminators
 -----------
 The drive is designed with single-ended drivers and receivers
 and must be used with other SCSI devices that use single-ended
 drivers and receivers. These systems require that terminators be
 used at both ends of the SCSI bus to ensure the
 integrity of the signal. The drive has built-in terminators that can
 be enabled or disabled as required. It is shipped with the termi-
 nators enabled. If you are positioning the drive at the end of the
 cable, you must enable the drive's internal terminators or attach
 an external terminator to the end of the cable. Terminators on the
 devices between the bus ends must be disabled or removed.

 - To enable the drive's terminators, leave the pin-pair 19 and 20
   on jumper block J8 open.

 - To disable the terminators, place a jumper on pins 19 and 20
   of jumper block J8.


 Terminator power
 ----------------
 The terminators must have a 5 volt power source to be active.
 In general, the device that provides the terminator also provides
 power for its terminator. Power for the terminator may also be
 supplied through the SCSI cable (this is usually done for external
 terminators). The Seagate drive provides settings for four
 implementations of terminator power:

 - Terminator power to the drive terminator and the SCSI bus-
   install jumpers on pins 21 and 23 and on pins 22 and 24 of J8.
   This is the default.

 - Terminator power to the drive terminators only-install a
   jumper on pins 23 and 24 of J8.

 - Terminator power from another device to the bus and the
   drive's terminator disabled-install a jumper on pins 21 and
   23 of J8.

 - Terminator power to the bus only and the drive terminator
   disabled-install a jumper on pins 22 and 24 of J8.



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SEAGATE  ST51080N  INSTALLATION GUIDE 36325-001 8/1995

 Notes on installation
 =====================

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

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

 The drive will operate in all axis (6 directions).


 Attaching cables
 ----------------
 Required materials:
 A four-conductor power-supply cable

 A fifty-conductor, nonshielded interface cable with a 50-pin, female
 connector attached for each SCSI device that is to be
 connected to the SCSI bus. The maximum cable length for
 asynchronous operation is 19.5 feet (6 meters). The maximum
 cable length for synchronous operation is 9.75 feet (3 meters).

 1. Turn off the system power and put on a grounded wrist
    strap before proceeding.

 2. Attach the 50-pin SCSI interface cable. Pin 1 on the drive
    must align with pin 1 of the other SCSI devices attached to the
    bus. Use the edge-stripe on the cable to denote pin 1. Pin 1
    on the drive is located next to the four-pin power connector.

 3. Connecting a remote LED. (Optional) Connect a remote LED
    to pins 9 and 10 of jumper block J8. Pin 9 is ground.

 4. Attach an available power cable to the drive.


 Mounting the drive
 ------------------
 Required materials
 - Four 6-32 UNC-2A screws (not included)

 The drive fits in the standard 3.5-inch bay and can be mounted
 in any orientation. Position the drive so that the cables are not
 strained or crimped. Secure it with four mounting screws not more
 than 6 full turns (0.20 inches) into the drive frame.

 Caution. To prevent drive mounting-hole damage, use only the
 type of screws specified.



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                      F   E   A   T   U   R   E  S
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SEAGATE  ST51080N  INSTALLATION GUIDE 36325-001 REV. A 8/1995


 Configuring the drive and computer
 ----------------------------------
 Once the drive is physically installed, the drive and computer
 must be configured to work with each other. This involves parti-
 tioning and formatting the drive and may require a special device
 driver or installation software depending on the operating system
 you are using and your SCSI adapter. Refer to your SCSI
 adapter's documentation for specific information on how to configure
 your drive.

 This guide describes a typical configuration for a PC using DOS
 and one or two SCSI drives only.

 System setup configuration
 --------------------------
 Required materials:
 - A bootable diskette with the Format and FDISK command
   If you are replacing the ATA (IDE) drive or drives in your computer
   with SCSI, you must reset the drive-type configuration listed in
   System Setup to Not Installed.

 1. Turn the computer on.

 2. Enter the System Setup routine. (Refer to your computer's
    user guide. System Setup may be called Setup, BIOS Setup
    or CMOS Setup.)

 3. Find the hard disc configuration in the System Setup screen.

 4. Change the drive-type status to Not Installed.

 5. Save the changes and exit System Setup.


 Low-level formatting
 --------------------
 Your drive was low-level formatted at the factory to 512 bytes per
 sector. You do not need to low-level format it again. If you choose
 to low-level format the drive, use the format routine supplied with
 your SCSI adapter. Refer to the SCSI adapter's documentation
 for instructions on how to low-level format the drive.


 Partitioning
 ------------
 You must partition the drive into one or more logical drives before
 you can use it.

 Caution. Partitioning or formatting a drive at any level erases all
 data on it. Make a backup copy of your existing files on
 another drive before you repartition or reformat. Seagate
 assumes no liability if you erase your data.

 To partition the drive:
 1. Insert a bootable diskette into Drive A. Turn the computer on.

 2. After the computer has completed booting, remove the boot
    diskette from Drive A. Insert a diskette that has the FDISK
    utility into Drive A and type fdisk. Press ENTER.
    Note. If you have two or more drives in your system, the menu
    displays five options. Option five allows you to select
    the drive you want to partition. Make sure you select the
    correct drive.

 3. Select create DOS partition or logical DOS drive. Press ENTER.

 4. Select create primary DOS partition. Use the maximum available
    size for your primary partition and make the partition
    active for Drive C. This puts the entire drive on one partition
    and allows you to load the DOS boot information on the drive.
    Press ENTER for each subsequent selection.
    After all of the appropriate selections are made, the computer
    restarts itself. You must place a bootable diskette into Drive A.


 High-level formatting
 ---------------------
 High-level formatting verifies the information written by the
 low-level format and builds the file allocation table (FAT) used by
 DOS to access files on the drive. If you put more than one partition
 on the drive, you must high-level format each partition. Refer to
 your DOS reference guide for instructions. Use the DOS FORMAT
 utility to high-level format the drive as follows:

 1. Type the following command at the DOS prompt:
           format drive: /v /s
    drive: designates the drive you are formatting. If you are
    formatting the boot drive or if your system contains only one
    drive, type c:. To format a second drive, type d:.
    / v tells the computer to create a volume label for the partition
      after it is formatted. Labeling can prevent someone from
      accidentally deleting the partition and losing your data.
    / s tells the computer to copy the necessary system files to the
      drive to make it bootable.

 2. When the computer prompts you for a volume label, you can
    assign a name to the drive volume of up to eleven characters
    or leave it blank. Press ENTER.


 NonDOS operating systems
 ------------------------
 If you are installing the drive in a system that is using an
 operating system other than DOS, you may need a device driver or
 installation software. The device driver is provided by your SCSI
 adapter manufacturer and is operating-system specific. It is
 provided on a diskette that comes with the adapter. Refer to the SCSI
 adapter's documentation for instructions on how to install the
 device driver. If you do not have a device driver for the operating
 system you want to install, contact the SCSI adapter manufac-turer.
 Installation software may be required to install the drive in some
 systems. There are many reputable third-party installation soft-ware
 packages available. Consult your dealer to determine the
 best package for your needs.

 Some operating systems require that you low-level format the
 drive. A low-level format routine is usually supplied on the SCSI
 adapter. Refer to your SCSI adapter's documentation for instructions
 on using the low-level format routine.


 Network installation
 --------------------
 If you are installing the drive in a network environment, you may
 need to configure your SCSI host adapter for network operation.
 Refer to your SCSI adapter's user guide for assistance preparing
 the SCSI adapter and installing the drive.

 If you have trouble installing the drive with the network software,
 try installing it with DOS to ensure that the drive is working
 correctly.



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SEAGATE   ST51080N  INSTALLATION GUIDE 36325-001 REV. A  8/1995


 Basic troubleshooting
 ---------------------
 Warning. Always turn off the system before changing jumpers or
 unplugging cables and cards.

 If your drive does not respond or function properly when you turn
 the power on following the hardware installation, perform these
 basic checks:

 - Check all cards. Make sure all cards are seated securely in
   their slots on the motherboard.

 - Check all cables. Make sure all cables are securely connected.
   A damaged ribbon cable or connector strain relief can
   cause the SCSI bus to fail.

   Verify that the pins 1 of each device on the cable are aligned.
   Use the edge-stripe on the cable to denote pin 1.

   Caution. Improperly aligning or reverse-plugging pin 1 of one
   device with the other devices on the cable can damage that
   device or other devices.

 - Check the SCSI ID. Make sure the drive's SCSI ID does not
   conflict with that of another device.

 - Check the terminator configuration. If the drive is at the end
   of the bus and external termination is not used, the drive's
   terminator must be enabled. Disable or remove termination on
   all devices between the drive and the device at the other end
   of the bus.

   If the drive is not the last device on the bus or if external
   termination is used, be sure to remove the jumper that enables
   the drive's termination.

   Make sure that the drive is running. Listen carefully for the
   drive motor spinning. Also, the drive-activity LED flashes when
   the power is turned on. If the LED stays on after power-on,
   make sure the interface cable is properly connected and that
   no other device on the bus is using the same SCSI ID.

 - Verify your host adapter configuration. Make sure the
   address configurations your host adapter is using do not
   conflict with the addresses other devices in your system use.

   Refer to your host adapter's user guide for assistance. Many
   host adapters have a diagnostic utility that can help you
   determine whether such conflicts exist.

   Verify that the drive works when your host adapter is set with
   the factory-default configuration. Refer to your host adapter's
   user guide for assistance determining the factory-default settings.

 - Check the CMOS drive type. If you have an AT system, the
   CMOS drive-type parameter values must be set to zero or Not
   Installed in AT systems.

 - Check the power supply specifications. The output of your
   power supply may not meet the requirements of the new
   devices you are installing. If you are not sure whether your
   power supply meets your needs, consult your dealer.

 - Check for viruses. Before you load new software, scan the
   diskette for viruses.

 - Isolate the drive. If there is more than one drive in your
   system, configure and install the drive for single drive opera-
   tion.

   If you are installing the drive in a network, verify that the
   drive works with DOS.


 Advanced troubleshooting
 ------------------------
 If you have performed the preceding basic checks but the problem
 has not been solved, follow these guidelines for analyzing
 specific cases:

 The system does not recognize the presence of the drive or
 system error message, "No Drives Found," appears.

 - Check all cables. Make sure they are properly connected and
   that the pins 1 are aligned. Make sure the cable is not crimped
   or damaged.

 - Check all cards for proper seating.

 - Check your host adapter's BIOS memory address setting.

   Make sure that it does not conflict with another device that sets
   a BIOS memory address.

 - Check the drive type in AT systems. The drive type must be
   set to Not Installed or all of the drive-type parameters set to
   zero.

 - Check the Drive C partition with the FDISK utility. The partition
   must be active.

 - Check the bus termination. The bus must be terminated at
   both ends. Disable or remove all terminators between the
   termination at the ends of the bus.

 - Check the terminator power source jumper settings.

 - Check the power-supply specifications.

 - Reboot and make sure the drive comes up to rotating speed.

   (It may be difficult to hear the discs spin.) If the drive's disc
   does not spin, check all drive cables.

 - If the drive is at least the third drive in your system, you may
   need to configure the BIOS for three or more drives or install
   a device driver. Refer to your host adapter's user guide for
   assistance. Contact the host adapter manufacturer for the
   device driver if one is required.

   System error message, "Drive not Ready," appears.

 - Check all cables. For each ribbon cable, verify that pin 1 of the
   cable is aligned with pin 1 of the connector. Pin 1 is usually
   denoted by a stripe on the side of the ribbon cable.

 - Check the power supply specifications.

 - Turn off the system and wait 20 seconds. Turn it back on and
   make sure the drive spins up. If the drive does not spin up,
   check the drive power cable.

   The screen stays blank when you power up the system.

 - Make sure the monitor is plugged in and turned on.

 - Check all cards. Make sure the video card is seated in its slot
   and secured with mounting screws.

 - Check all cables. Make sure the video card cables are securely
   attached.

 - Turn off the computer and remove all cards except the video
   card. Boot the computer. Power down the computer and add
   another card. Reboot. Repeat these steps until a failure oc-curs.

   The system hangs in FDISK or fails to create or save the
   partition record.

 - Check all cables.

   DOS diskette.
 - If you have DOS Version 4.0 or earlier, make the drive partitions
   smaller.

 - Check for media defects at the beginning of the drive. Use a
   third-party surface scan utility.

   The FDISK error message, "No Fixed Disk Present," appears.

 - Check all cables.

 - Check the power supply specifications.

 - Make sure the drive spins up when you turn on the system.

 - In AT systems, check the drive type. The drive type must be
   set to Not Installed or the drive-type values set to zero.

 - Check for I/O address conflicts.

   During the DOS high-level format, the drive keeps retrying
   hard errors and reporting the following message.

  "Attempting to recover allocation units. . ."

 - This is normal with DOS Version 4.0 or later.

   DOS messages, "Disk Boot Failure," "Non-System Disk," or
   "No ROM Basic - SYSTEM HALTED," appear.

 - Remove the diskette from the diskette drive.

 - Check all cables.

 - Use the same version of DOS throughout your system.

 - Reinstall the DOS system files using the DOS SYS utility.

 - Make sure the primary partition is active in FDISK.

 - Check for viruses.


