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Hard Drive: QUANTUM: QM 32550AT SIROCCO 2550MB 3.5"/SL ATA2 FAST




Q M   3 2 5 5 0 A T       S I R O C C O    QUANTUM
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        | 4969|     |
Capacity form/unform  2550/      MB        Heads           6|   16|     |
Seek time   / track  11.0/ 2.5 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB ADAP./SEGMEN Landing Zone
Data transfer rate    5.000 MB/S int       Bytes/Sector      512
                     16.600 MB/S ext PIO4
Recording method     PRML 16/17                     operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 65
Power: sleep              W     Humidity     %         5 85    |      5 95
       standby        0.8 W     Altitude    km            2.137|        12.192
       idle           4.2 W     Shock        g        10       |     70
       seek           6.5 W     Rotation   RPM      4500
       read/write         W     Acoustic   dBA        33
       spin-up            W     ECC        Bit   160BIT REED SOLO.,ON THE FLY
                                MTBF         h     400000
                                Warranty Month        36
Lift/Lock/Park     YES          Certificates                                  

Layout

QUANTUM QM31700/32550AT SIROCCO INSTALLATION GUIDE 6/96

  +-----------+---------------------------------------------+
  |           |                               JP1+-+-+-+-+  |XX
  ++          | +-+                              +-+-+-+-+  |XX
  |+----------+-+ |                             SP DS CS PK |XX
  |+----------+-+ |                                         |XX
  ++          | +-+                                         |XX AT-Bus
  |           |                                             |XX
  |           |                                             |XX J1C
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |XX1
  |           |                                             |xx J1B
  |           |                                             |XX Power
  |           |                                             |xx
  |           |                                             |XX Power
  +-----------+---------------------------------------------+xx J1A

Jumpers

QUANTUM QM 31700AT/32550AT SIROCCO JUMPER SETTING

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

The QM31700AT/QM32550AT has three drive mode jumper options:
DS (Drive Select), SP (Slave Present) and CS (Cable Select).

The PK jumper is used for store spare jumpers.

 JP1  Drive Select/Cable Select/Slave Present
 --------------------------------------------
 +---+---+---+-------+---------------------------------------------+
 |CS |DS |SP | Pin 28|           Description                       |
 +---+---+---+-------+---------------------------------------------+
 | 0 | 0 | 0 |   X   |Drive configured as a slave.                 |
 +---+---+---+-------+---------------------------------------------+
 | 0 | 1 | 0 |   X   |Drive is configured as Master.               |
 +---+---+---+-------+---------------------------------------------+
 | 1 | 0 | 1 | OPEN  |Drive configured as a slave.                 |
 +---+---+---+-------+---------------------------------------------+
 | 1 | 0 | 0 | GND   |Drive is configured as Master.               |
 +---+---+---+-------+---------------------------------------------+

NOTE
In the table below, a 0 indicates that the jumper is removed, a 1
indicates that the jumper is installed, and an X indicates that the
jumper setting does not matter.

Master Drive
------------
The Master of a two drive configuration or as the only drive
(if the slave drive uses DASP).
DS CLOSED
SP OPEN
CS OPEN

Drive Select
------------
The DS jumper is used to identify the drive as a Master drive in a
single or dual drive configuration.

Master in a two drive system
----------------------------
If the Slave drive does not use DASP
DS CLOSED
SP CLOSED (Slave present)
CS OPEN

Slave Drive
-----------
A Slave drive in a two drive configuration:
DS OPEN
SP OPEN
CD OPEN

Slave Present
-------------
The SP jumper is only used when the second drive in a two drive
configuration does not support DASP. DASP (Drive active/drive 1
present) is a CAM (Common Access Method) defined signal that
indicates the presence of a second drive, DASP is used during power
on initialization and after a reset. Prior to this definition,
products were introduced which did not utilize this method to detect
the presence of a second drive. The SP jumper is only used on the
Master drive, with the DS jumper, when the second drive does not
support DASP.

Cable Select
------------
The CS (Cable Select) jumper is only used in systems that support
this feature. Cable Select allows for each IDE disk drive to be
jumped the same and the position on the cable determines the ID.
This requires special cable and both drives on the interface would
have to support this feature.

When two Sirocco 1700/2550AT hard disk drives are daisy-chained
together, they can be configured as Master and Slave by using the CS
jumper or by using the DS jumpers. To configure the drive as a
Master or Slave with the CS feature, the CS jumper is installed.

Once you install the CS jumper, the drive is configured as a Master
or Slave by state of the Cable Select signal, which is pin 28 at the
IDE-bus interface connector. Please note that pin 28 is a vendor-
specific pin that Quantum is using for a specific purpose. More than
one function is allocated to CS, according to the ATA CAM specifica-
tion. If pin 28 is 0 (grounded), the drive is configured as a Master.
If it is a 1 (high), the drive is configured as a Slave. In order to
configure two drives in a Master/Slave realationship using the CS
jumper, you need to use a cable that provides the proper signal
level at pin 28 of the IDE bus connector. This allows two drives to
operate in a Master/Slave realtionship according the drive cable
placement.

Drive Select Jumper
-------------------
You can also daisy-chain two drives on the IDE bus interface by using
their Drive Select (DS) jumpers. To use the DS feature, the CS jumper
must be removed.

To configure a drive as the Master (Drive 0), a jumper must be
installed on the DS pins.

The Quantum Sirocco 1700/2550AT hard disk drives are shipped from the
factory as a Master (Drive 0 - DS jumper installed). To configure a
drive as a Slave (Drive 1), the DS jumper must be removed. In this
configuration, the spare jumper removed from the DS position may be
stored on the PK jumper pins.

NOTE
The order in which drives are connected in a daisy chain has no
significance.

Install

QUANTUM QM31700/32550AT SIROCCO INSTALLATION GUIDE 6/96

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

J1A/B/C DC Power/Interface Connector
-------------------------------------
The drive's DC power can be applied to either section A or B.
The IDE-bus interface (40-pin) uses section C.

                J1 AT (40-pin)/DC (4-Pin & 3-Pin)
                Combination Connector
 +----------------------------------------------------------------+
 |                                               3-Pin    4-Pin   |
 |    40-Pin AT (J1 Section C)                   DC Power DC Power|
 |   +---------------------------------------+   J1 B     J1 A    |
 |   |o o o o o o o o o o o o o o o o o o o 1|  +-----+ +-------+ |
 |   |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| |
 |   ++-------------------+------------------+  +3-2-1+ +4-3-2-1+ |
 +----+-------------------+---------------------------------------+
      |                   |
      Pin 40              Missing Pin
                          Pin 20

 J1 A Pin 1  +12 VDC
          2  +12 VDC Return (Ground)
          3  + 5 VDC Return (Ground)
          4  + 5 VDC

 J1 B Pin 1  + 5 VDC
          2  +12 VDC
          3  Ground













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