Hard Drive: QUANTUM: PRODRIVE 1225 S (D) 1225MB 3.5"/HH SCSI2 DIFF

P R O D R I V E   1 2 2 5   S   ( D )    QUANTUM
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    2448|     |     |
Capacity form/unform  1225/      MB        Heads          14|     |     |
Seek time   / track  10.0/ 3.0 ms          Sector/track     |     |     |
Controller           SCSI2 DI/FAST         Precompensation
Cache/Buffer           512 KB SEGMENTED    Landing Zone
Data transfer rate    3.000 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           55    |    -40 65
Power: sleep              W     Humidity     %         8 85    |      5 95
       standby            W     Altitude    km    -0.061  3.048| -0.061 12.000
       idle               W     Shock        g        10       |     60
       seek               W     Rotation   RPM      4002
       read/write         W     Acoustic   dBA        40
       spin-up            W     ECC        Bit   112,REED SOLOMON
                                MTBF         h     350000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     CSA,FCC,TUV,UL1950,VDE

Layout

QUANTUM PRODRIVE 700/1050/1225S PRODUCT MANUAL 81-102480-01 AUG. 92

  +----------------------------------------------------------+
  |                                         A2 A1 A0         |
  |                              +-+-+-+-+-++-+-+-+          |XX
  |                              +-+-+-+-+-++-+-+-+JP1       |XX
  |                               TE SS EP WS                |XX
  |                                                          |XX
  |                                                          |XX SCSI
  |                                                          |XX J1
  |                                                          |.X
  |                                                          |XX
  |                                                          |XX
  |                                                          |XX
  |                                                          |XX
  |                                                          |XX
  |                                                          |XX1
 ++ LED                                                      |
 ++                                                          |XX
  |                                                          |XX J3
  +----------------------------------------------------------+  1

Jumpers

QUANTUM PRODRIVE 700/1050/1225S PRODUCT MANUAL 81-102480-01 AUG. 92

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

x = Jumper set at factory

Jumper Options
--------------
On the Drive's PCB, there are eight pairs of jumper pins that allow
you to control drive operation. When you change a jumper setting, the
new setting is in effect when the drive is next powered on.

  +---------+-----------+-------------------------------------------+
  | Jumper  | Setting   | Description                               |
  +---------+-----------+-------------------------------------------+
  |   TE    | OPEN      | Termination Disabled                      |
  |         | CLOSED x  | Termination Enabled                       |
  +---------+-----------+-------------------------------------------+
  |   EP    | CLOSED x  | Parity checking enabled                   |
  |         | OPEN      | Parity checking disabled                  |
  +---------+-----------+-------------------------------------------+
  |   WS    | OPEN   x  | Wait/Spin disabled                        |
  |         | CLOSED    | Wait/Spin enabled                         |
  +---------+-----------+-------------------------------------------+
  |   A2    | CLOSED x  | A0, A1, and A2 are used in combination to |
  |   A1    | CLOSED x  | determine the drive's SCSI ID. The default|
  |   A0    | OPEN   x  | value is six.                             |
  +---------+-----------+-------------------------------------------+

Jumper Options
--------------
The configuration of five jumpers control the drive's mode of
operation:

     TE - Termination Enable

     EP - Enable Parity

     WS - Wait/Spin

TE Termination Enable Jumper
----------------------------
One of the requirements of the SCSI bus is that it be terminated with
proper termination resistors. If more than one hard disk device is
connected to the host, the last one must be terminated. The TE
(Termination Enable) jumper, when installed, connects terminating
resistors to the SCSI bus. With the TE jumper off, no resistors are
connected.

EP Enable Parity Jumper
------------------------
The Enable Parity (EP) jumper controls parity checking across the
SCSI bus.

Installing the EP jumper enables parity checking. Quantum ships
ProDrive 700/1050/1225S hard disk drive from the factory with the
EP jumper installed. Removing the EP jumper disables parity checking.
The drive still generates parity, but does not perform parity check-
ing. When the jumper is changed, the new setting takes effect at the
next power on.

WS Wait/Spin Jumper
--------------------
The Wait/Spin (WS) jumper controls the Wait/Spin option. Quantum
ships the ProDrive 700/1050/1225S hard disk drive from the factory
with no WS jumper installed - that is, with the Wait/spin option
disabled. With the Wait/Spin option disabled at power-on, the motor
starts spinning automatically and the drive will become ready to
perform read or write operations without the need for start command.
To enable Wait/Spin option, install the WS jumper.

With the WS jumper installed at power-on, the motor does not start to
spin until the host sends a START/STOP UNIT command. This delay
permits power sequencing, preventing the system power supply from be-
ing overloaded by simultaneous demands for peak start current from
multiple devices. Once the drive receives the START/STOP UNIT
command, it will become ready to perform read or write operations.

A2/A1/A0 SCSI-Bus Device Identification
----------------------------------------
Used in combination, the jumper settings across A2, A1, and A0 de-
termine the ProDrive 700/1050/1225S hard disk drive's SCSI-bus device
identification (SCSI ID). By default, Quantum configures the drive
with a SCSI ID of six; that is, with jumpers installed across the
pins labeled A2 and A1, and no jumper installed across the pins
labeled A0.

   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          |  A2   |  A1   |  A0   |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   |    1     | OPEN  | OPEN  | CLOSED|
   |    2     | OPEN  | CLOSED| OPEN  |
   |    3     | OPEN  | CLOSED| CLOSED|
   |    4     | CLOSED| OPEN  | OPEN  |
   |    5     | CLOSED| OPEN  | CLOSED|
   |x   6     | CLOSED| CLOSED| OPEN  |
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+

The SCSI bus supports up to eigth devices, including the host system.
A device's identification number determines its priority and must be
unique in the system.