
W D E 2 1 7 0 - 0 0 0 3   D I F F E R E    WESTERN DIGITAL
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        |     |     |
Capacity form/unform  2170/      MB        Heads           4|     |     |
Seek time   / track   8.0/ 1.0 ms          Sector/track     |     |     |
Controller           SCSI3 DI/ULTR/FAST    Precompensation
Cache/Buffer           512 KB ADAP./SEGMEN Landing Zone
Data transfer rate   17.500 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     PRML                           operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 60
Power: sleep              W     Humidity     %        10 95    |      5 95
       standby            W     Altitude    km    -0.305  3.048| -0.305 12.192
       idle           7.1 W     Shock        g        10       |     70
       seek           9.6 W     Rotation   RPM      7200
       read/write         W     Acoustic   dBA
       spin-up       11.9 W     ECC        Bit   144BIT REED SOLOMON,SMART
                                MTBF         h    1000000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates


**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
WESTERN  WDE2170/4360 50-PIN ENTERPRISE  JUMPER SETTING

  +---------------------------------------------------------+
  |+-+                                                      |XX
  || | Option Block                                         |XXPOWER
  || |                                                      |
  || |                                                      |
  || |                                                      |
  |+-+                                                      |XX
  |                                                         |XX
  |                                                         |XX
  |                50-Pin Version                           |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX SCSI
  |                                                         |XX I/O
  |                                                         |XX
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
WESTERN  WDE2170/4360  INSTALLATION

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

 The drive is designed for use in a variety of systems. Therefore,
 several configuration options can be set using the option block on
 the front of the drive (end opposite the SCSI connector). In most
 cases you will not need to change the default settings for normal
 drive operation. However, some installations may require you to
 install or remove certain jumpers in order to meet system
 specifications.


SCSI ID Numbers
Each device on the SCSI bus requires a unique SCSI ID
 number (0 to 7).

 SCSI ID Numbers
 ---------------
 Each device on the SCSI bus requires a unique SCSI ID number
 (0 to 7 for 8-bit drives, 0 to 15 for 16-bit drives). Option
 block pin 1 through 8 are used to set the SCSI IDs. The host
 computer's SCSI controller typically uses ID number 7, and the other
 numbers are used for devices such as hard drives. The WD Enterprise
 has a default SCSI ID of 0.

 SCSI ID 8-bit
 -------------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | 5&6   | 3&4   | 1&2   |
   +----------+-------+-------+-------+
   |x   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|
   +----------+-------+-------+-------+

 SCSI ID - 16-bit
 ----------------
   +----------+-------------------------------+
   | SCSI ID  |       Jumper Location         |
   |          |             PINS              |
   |          |  7-8  |  5-6  |  3-4  |  1-2  |
   +----------+-------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |    2     | OPEN  | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |    3     | OPEN  | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
   |    4     | OPEN  | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |    5     | OPEN  | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |    6     | OPEN  | CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |    7     | OPEN  | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
   |    8     | CLOSED| OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |    9     | CLOSED| OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |   10     | CLOSED| OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |   11     | CLOSED| OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
   |   12     | CLOSED| CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |   13     | CLOSED| CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |   14     | CLOSED| CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |   15     | CLOSED| CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+


 SCAM
 ----
 SCSI ID Numbers
Each device on the SCSI bus requires a unique
 SCSI ID number (0 to 7)
 The WD Enterprise drive supports the SCSI Configured Automatically
 (SCAM) option, which automatically assigns SCSI ID numbers and
 resolves ID conflicts upon bootup. If your SCSI controller and other
 SCSI devices support SCAM, you do not need to manually assign a SCSI
 ID to the hard drive.

 Option block pins 17 and 18 are dedicated to the SCAM feature. To
 enable SCAM, install a jumper as shown. To disable SCAM, no jumper
 is required.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  o  o  X  o  o  o  o  o  o  o  o |
   | o  o  o  o  o  o  o  o  X  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 Disable Auto Start
 ------------------
 The WD Enterprise drive can be configured to Auto Start, or
 automatically spin up when power is applied to the drive. If the
 drive is configured to disable Auto Start, it powers up, but will not
 spin up until a start unit command is issued by an operator.
 Option block pins 13 and 14 are dedicated to the Auto Start option.
 To disable Auto Start, install a jumper as shown. To enable
 Auto Start, no jumper is required.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  o  o  o  o  X  o  o  o  o  o  o |
   | o  o  o  o  o  o  o  o  o  o  X  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 Auto Start Delay
 ----------------
 This feature delays the start-ip process to avoid an initial power
 surge when several drives are powered up at once. The delay time
 (default) is 4 seconds between drives, or the SCSI ID multiplied by 4
 seconds. Let's say you have three hard drives in your system, and
 they are set to SCSI IDs 0, 1, and 2. The drive assigned as ID 0 will
 power up immediately; the drive assigned to ID 1 will power up in 4
 seconds; and the drive assigned to ID 2 will power up in 8 seconds.
 NOTE: The 4 second delay time can be changed in the drive's mode
 parameter settings.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  o  o  o  X  o  o  o  o  o  o  o |
   | o  o  o  o  o  o  o  o  o  X  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+

 Option block pins 15 and 16 are dedicated to the Auto Start Delay
 option. (This option is valid only if the Disable Auto Start jumper
 is not installed.) To enable Auto Start Delay, install a jumper as
 shown. To disable Auto Start Delay, no jumper is required.


 Disable Unit Attention
 ----------------------
 Whenever a target (WD Enterprise drive) has been reset by a power-on
 or reset sequence, it communicates a unit attention message to the
 initiator (host bus adapter).

 Option block pins 19 and 20 are dedicated to the Disable Unit
 Attention option. To disable unit attention, install a jumper as
 shown. To enable unit attention, no jumper is required.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  o  X  o  o  o  o  o  o  o  o  o |
   | o  o  o  o  o  o  o  X  o  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 Disable Target Initiated Synchronous/Wide Negotiation
 -----------------------------------------------------
 During the power up sequence, the initiator (host bus adapter) and
 the target (WD Enterprise drive) negotiate and agree upon three
 items: bus width, bus speed, and synchronous/asynchronous data
 transfer. Either the initiator or the target can start the
 negotiation process, and once this process is completed successfully,
 all "data in" and "data out" phases will operate as determined during
 the handshake. The negotiation process is done only once, usually
 during start-up.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  X  o  o  o  o  o  o  o  o  o  o |
   | o  o  o  o  o  o  X  o  o  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+

 Option block pins 21 and 22 are dedicated to the Disable Target
 Initiated Synchronous/Wide Negotiation option. To disable target
 initiated synchronous/wide negotiation, install a jumper as shown.
 To enable target initiated synchronous/wide negotiation, no jumper is
 required.


 SCSI Termination
 ----------------
 To ensure reliable communication, the SCSI bus must be properly
 terminated. Devices located at the physical ends of the SCSI bus
 should have their terminators enabled. All other devices must have
 their terminators disabled.

 Option block pins 23 and 24 are dedicated to the SCSI Termination
 option. To enable SCSI termination, install a jumper as shown.
 To disable SCSI termination, no jumper is required.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  X  o  o  o  o  o  o  o  o  o  o  o |
   | o  o  o  o  o  X  o  o  o  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 Termination Power (TERMPWR)
 ---------------------------
 WD Enterprise drives have the ability to supply +5V to the SCSI bus
 for termination. Option block pins 27 and 28 are dedicated to
 TERMPWR. If you want the drive to supply TERMPWR to the SCSI bus,
 install a jumper as shown. To disable TERMPWR, no jumper is required.

 NOTE: Termination power from the hard drive is required only if the
 host bus adapter does not supply it. However, both devices can
 provide termination power with no detrimental effects to the system.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  X  o  o  o  o  o  o  o  o  o  o  o  o  o |
   | o  o  o  X  o  o  o  o  o  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 Spindle Synchronization
 -----------------------
 If you are installing two or more WD Enterprise hard drives, you can
 synchronize their spindles to reduce the latency associated with
 switching from one drive to another. Spindle sync allows the host to
 synchronize the index pulses of the drives at a specified offset.
 This means that the same numbered sector passes under the read/write
 head at the same time across all drives. For more details regarding
 the sync offset, refer to the Western Digital SCSI Implementation
 Guide (document number 4096-0011116) and the WD Enterprise Technical
 Reference Manual (document number 4079-001045).

 NOTE: The spindle sync feature is intended for use with like WD
 Enterprise drives only.

 Option block pin 12 is dedicated to Spindle Sync, as shown. To
 enable spindle sync, pin 12 must be connected on all drives that are
 to be in sync. (Pin 11 is ground).

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  o  o  o  o  o  *  o  o  o  o  o |
   | o  o  o  o  o  o  o  o  o  o  o  *  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 LED Support
 -----------
 If your system configuration allows the use of an activity LED
 external to the WD Enterprise drive, you can power the LED from the
 drive. Pins 10 and 29 are dedicated to LED support, as shown.
 To install an external activity LED, connect the positive lead
 (anode) of the LED to pin 29 and the negative lead (cathode) to pin
 10.

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | o  o  o  o  o  o  o  o  o  o  o  o  *  o  o  o  o |
   | o  o  *  o  o  o  o  o  o  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+

 NOTE: These pins can be used to power an LED located on the front of
 the drive, or an external LED in systems where the front of the drive
 cannot be seen.


 Reserved Pins
 -------------
 There are a number of pins on the option block that are reserved for
 development and manufacturing purposes:

 - Pins 25 and 26

 - Pin 30

 - Pins 31 and 32

 - Pins 33 and 34

 - Key slot (prevents incorrect installation of connector)

   +-34-32-30-28-26-24-22-20-18-16-14-12-10-8--6--4--2-+
   | x  x  x  o  x  o  o  o  o  o  o  o  o  o  o  o  o |
   | x  x  o  o  x  o  o  o  o  o  o  o  o  o  o  o  o |
   +-33-31-29-27-25-23-21-19-17-15-13-11-9--7--5--3--1-+


 Mode Select Options
 -------------------
 Certain configuration parameters can be altered by using the SCSI
 Mode Select command. Some examples include Read/Write Error Recovery
 Page, Format Device Page, and Caching Page. The Mode Select command
 allows drive characteristics to be customized to meet your system
 requirements. Refer to the Western Digital SCSI Implementation Guide
 (document number 4096-001116) for more information.


 Remote Option Block
 -------------------
 WD Enterprise 68-pin drives are equipped with a remote option block
 that allows you to set SCSI IDs and enable select options such as
 termination, spindle synchronization, and LED power. Customers using
 the remote option block typically use a pre-fabricated cable for
 convenient connection to the host. Do not use jumpers on this option
 block. For more information, refer to the WD Enterprise Technical
 Reference Manual (document number 4079-001045).



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
WESTERN  WDE2170/4360 ENTERPRISE INSTALLATION

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

 MOUNTING RESTRICTIONS
 ---------------------
 The WD Enterprise drive is a precision mechanical assembly. Since
 improper mounting may distort the drive frame and impair its proper
 function, mounting the drive securely will ensure maximum
 performance.

 Western Digital provides technical support to those customers
 requiring assistance with mounting design. Some customers may wish to
 review their system mechanical design and system grounding
 architecture to optimize drive performance and ensure compliance with
 the various electromagnetic compatibility regulations in the markets
 being served.


 Ventilation
 -----------
 The ambient temperature surrounding the drive must not exceed 131*F
 (55*C). The enclosure used to house the drive should supply
 sufficient airflow around the drive and printed circuit board
 assembly (PCBA) to maintain temperatures at or below the temperatures
 defined in the Reference section of this manual. Operation above this
 level may adversely affect the drive's performance.


 Orientation
 -----------
 The drive features both bottom and side mounting holes.


 Mounting
 --------
 Four 6-32 UNC screws are used to mount the drive. To avoid stripping
 the mounting-hole threads, the maximum torque applied to the screws
 should not exceed 6.0 in-lb. (0.675 N-m). Be aware of the following:

 - The drive features four mounting holes on either side of the drive
   and four mounting holes on the bottom.

 - The maximum allowable penetration of the screws is 0.150" (3.8 mm).
   This length allows full use of the mounting-hole threads, while
   avoiding damage or stress to the PCBA.


 SCSI CABLE LENGTH RESTRICTIONS
 ------------------------------
 Single-ended SCSI drives allow cable lengths of up to 6 meters (19.68
 feet). Users who plan to use "Fast" and "Ultra Fast" data transfers
 with single-ended models should follow all the ANSI SCSI guidelines
 for these operations. Differential SCSI drives allow cable lengths of
 up to 25 meters (82.02 feet). Cables must meet the requirements for
 differential cables as set forth in the ANSI SCSI standard.

 Drives equipped with a SCA-2 connector are not designed for direct
 cable attachment due to the combination of power and SCSI bus
 signals. The ANSI SCSI standard states that any stub from the main
 cable must not exceed 0.1 meters (.32 feet) for single-ended cables
 and 0.2 meters (.65 feet) for differential cables.
 +-----------+-----------------+------------+-------------+
 | Bus Type  |Properly         |Single-ended|Differential |
 +-----------+-----------------+------------+-------------+
 | SCSI-1    |Max. bus length  |   6m       |    25m      |
 +-----------+-----------------+------------+-------------+
 | SCSI-2    |Max. bus length  |   6m       |    25m      |
 +-----------+-----------------+------------+-------------+
 | Fast SCSI2|Max. bus length  |   3m       |    25m      |
 +-----------+-----------------+------------+-------------+
 | Ultra SCSI|Max. bus length  |   3m       |    25m      |
 |           |point-to-point   |            |             |
 |           |Max. bus length  |   6m       |    25m      |
 |           |multi-drop       |  15m       |    25m      |
 +-----------+-----------------+------------+-------------+
 | All       |Max. stub length |  0.1m      |    0.2m     |
 |           |Min. stup specing|  0.3m      |    0.3m     |
 +-----------+-----------------+------------+-------------+


 CONNECTOR TYPES
 ===============
 50-pin SCSI Connector
 ---------------------
 50-pin models use a high density connector which is compatible with
 ANSI SCSI "A" style connector specifications. It can transfer data in
 8-bit (narrow) mode only.

 68-pin SCSI Connector
 ---------------------
 68-pin models use a high density connector which is compatible with
 ANSI SCSI "P" style connector specifications. It can transfer data in
 8-bit (narrow) and 16-bit (wide) modes. Both single-ended and
 differential SCSI versions are available.

 80-pin SCSI Connector
 ---------------------
 80-pin models use a Single Connector Attachment (SCA-2) connector
 which is designed for backplane connections. It can transfer data in
 8-bit (narrow) and 16-bit (wide) modes.


 MULTIPLE DRIVE INSTALLATIONS
 ----------------------------
 If your system requires multiple devices, you may install up to eight
 SCSI devices (including the host bus adapter) on an 8-bit SCSI bus;
 up to sixteen SCSI devices (including the host bus adapter) on a
 16-bit SCSI bus, or up to 32 devices (including the host bus adapter)
 on a 16- bit SCSI bus with a dual processor host bus adapter.


 INSTALLING THE DRIVE
 --------------------
 Because the Enterprise WDE2170 and WDE4360 drives are compatible with
 a wide range of computer systems and host bus adapters, this manual
 does not include system-specific information. If the information
 contained in the following sections does not adhere to your setup,
 refer to your computer system documentation for further details.


 POWER CONNECTORS AND CABLE
 --------------------------
 50-pin Power Connector: AMP 2-in-1 (or equivalent)
 Mating Connector: 1 by 4

 PC power connector
 Power Cable: 18 AWG 68-pin
 Power Connector: Molex 3-in-1 combo (or equivalent)
 Mating Connector: 1 by 4 PC power connector
 Power Cable: 18 AWG 80-pin SCA-2 Connector



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
WESTERN  WDE2170/4360  ENTERPRISE  INSTALLATION

 Introduction
 ------------
 Please review this installation guide before you install your WD
 Enterprise hard drive. If you require assistance, contact our
 technical support staff at 1-888-WDC-SCSI.


 PRODUCT DESCRIPTION
 -------------------
 WD Enterprise hard drives are 3.5-inch, high-performance SCSI drives
 designed for use in workstation, server, multi-user, array, and
 audio/video applications. They feature outstanding performance,
 capacity, and reliability.

 These drives feature formatted capacities of 2.1 GB and 4.3 GB. They
 are compliant with SCSI-3 SPI, support Ultra Fast (50-pin) and Ultra
 Fast Wide (68-pin) host data transfer rates up to 40 MB/s, and offer
 an SCA-2 (80-pin) interface. The WD Enterprise drives offer an
 average read seek time of 8 ms and a media transfer rate of up to 140
 Mbits/s.

 There are currently two models available in the WD Enterprise series:
 the WDE4360 and WDE2170. The "WDE" prefix represents the Western
 Digital Enterprise group of products and the four numeric digits
 denote the drive's capacity in megabytes. The model number listed on
 the product label may include additional customer-specific
 information.


 PRODUCT FEATURES
 ----------------
 The WD Enterprise drive offers the following features:

 - Advanced Caching - Including Read and Write Caching, Pre-fetch, and
   Adaptive Caching

 - Command Queuing - Supports both tagged and untagged queuing;
   command reordering maximizes the drive performance by minimizing
   latency and seek time.

 - S.M.A.R.T. (Self Monitoring Analysis and Reporting Technology) - A
   hard drive firmware technology that performs drive failure
   prediction by monitoring selected parameters during normal drive
   operations.

 - SCAM (SCSI Configure Automatically) Level 2 Compliant - Eases user
   configuration of SCSI ID's and hot plugging on single and multiple
   drive systems.

 - Error Correction Code (ECC) - ECC on-the-fly is a feature
   that allows some ECC errors to be corrected in hardware with no
   delays to data transfer.

 - 512 KB Data Buffer - The entire data buffer is user accessible. A 1
   MB option is also available.


 General Information - Handling Precautions
 ------------------------------------------
 The WD Enterprise hard drive is designed to withstand normal
 handling during unpacking and installation. Care must be taken to
 avoid excessive mechanical shock or electrostatic discharge (ESD)
 that can permanently damage the drive and void the warranty.

 Be aware of the following precautions when unpacking and installing
 the WD Enterprise drive:

 - Do not unpack the hard drive until you are ready to install it.

 - Handle the drive by the sides only and avoid touching the circuit
   board components and connectors.

 - Do not attempt to remove the drive cover. Servicing components in
   the sealed compartment requires special cleanroom facilities.
   Failure to observe this restriction will void the warranty.

 - For additional handling information, refer to the Western Digital
   3.5-inch Drive Handling Guide (document number SO999).


 BEFORE INSTALLING THE DRIVE
 ---------------------------
 NOTE: Record the hard drive's model number and serial number before
 you begin the installation. Be sure that you have the following items
 prior to installing the WD Enterprise drive:

 - Computer system manual

 - Operating system manual

 - Host bus adapter manual

 - Non-magnetic screwdriver

 You may also need:
 - Jumper shunts, if you change the drive configuration. Jumper shunt
   are available from your local computer dealer or from Western
   Digital technical support.

 - Interface cable (for 50-pin or 68-pin models)

 - A drive tray or mounting rails, depending upon system requirements

 - Additional power cable(s)

 Western Digital provides technical support to those customers
 requiring assistance with mounting design. Some customers may wish to
 review their system mechanical design and system grounding
 architecture to optimize drive performance and ensure compliance with
 the various electromagnetic compatibility regulations in the markets
 being served.


 Mode Select Options
 -------------------
 Certain configuration parameters can be altered by using the SCSI
 Mode Select command. Some examples include Read/Write Error Recovery
 Page, Format Device Page, and Caching Page. The Mode Select command
 allows drive characteristics to be customized to meet your system
 requirements. Refer to the Western Digital SCSI Implementation Guide
 (document number 4096-001116) for more information.



**********************************************************************
                      G   E   N   E   R   A   L
**********************************************************************
WESTERN   WDE 2170/4360 ENTERPRISE TROUBLESHOOTING

 TROUBLESHOOTING
 ---------------
 If you encounter a problem during installation of your WD Enterprise
 drive, first review your computer system documentation to ensure that
 you followed the setup procedures correctly, then use this checklist:

 - Is the system plugged in and are all power connections secure?

 - Is the host bus adapter installed correctly? Check to see that the
   adapter card is seated properly. Also check for a possible system
   resource conflict such as I/O port, IRQ, or DMA.

 - Are the SCSI cables correctly connected to all devices? Make sure
   that pin 1 is oriented correctly and that the connector is seated
   properly.

 - Have the SCSI ID jumpers been properly installed? Verify that there
   are no conflicting SCSI ID settings among the devices.

 - Are the devices on the ends of the SCSI cables terminated properly?

 - Have the terminators been removed from devices in the middle of the
   cable?

 - Is the SCSI cable too long?

 - Are you receiving an error code? If so, refer to your operating
   system documentation for an explanation of the code.

 - Have the option jumpers been installed properly?

 If a problem persists, contact the manufacturer of the host bus
 adapter to verify the hardware and software setup is correct.
 If you have additional questions, contact your local dealer, the
 Western Digital web site (at www.wdc.com), or Western Digital
 Technical Support at 1-888-WDC-SCSI for assistance.


