
Q M   3 0 8 5 0 T B A   T R A I L B L A    QUANTUM
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    3653|     |     |
Capacity form/unform   850/      MB        Heads           4|     |     |
Seek time   / track  14.0/ 5.0 ms          Sector/track     |     |     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB ADAPTIVE     Landing Zone
Data transfer rate    6.700 MB/S int       Bytes/Sector      512
                     16.667 MB/S ext PIO4
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C           55    |    -40 75
Power: sleep          1.0 W     Humidity     %         5 85    |      5 95
       standby        1.0 W     Altitude    km    -0.226  3.048| -0.226 12.192
       idle           3.3 W     Shock        g        10       |     70
       seek           6.6 W     Rotation   RPM      4500
       read/write     4.5 W     Acoustic   dBA        30
       spin-up            W     ECC        Bit   48,REED SOLOMON
                                MTBF         h     300000
                                Warranty Month        36
Lift/Lock/Park     YES          Certificates



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                        L   A   Y   O   U   T
**********************************************************************
QUANTUM  QM30420/30850AT TRAILBLAZER  JUMPER SETTING


  +-----------+---------------------------------------------+
  |           |                                  +-+-+-+    |XX
  ++          | +-+                              +-+-+-+    |XX
  |+----------+-+ |                             SP DS CS    |XX
  |+----------+-+ |                                         |XX
  ++          | +-+                                         |XX AT-Bus
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |XX
  |           |                                             |
  |           |                                             |
  |           |                                             |xx
  |           |                                             |XX Power
  +-----------+---------------------------------------------+xx



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
QUANTUM  QM30420/850AT TRAILBLAZER  JUMPER SETTING

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

 The Trailblazer 420/850AT has three drive mode jumper options; DS,
 SP, and CS.

 - The MASTER of a two drive configuration or as the only drive:
   Jumper DS only, SP and CS open.

 - A SLAVE drive in a two drive configuration: Remove any jumpers
   across DS, SP or CS.

 - CS not used, DO NOT install a jumper across this position.


 Drive Select
 ------------
 The DS jumper is used to identify the drive as a MASTER drive in a
 single or dual drive configuration. This is the factory default
 setting.


 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.


