540MB SCSI Hard Disk (250-4168)     Specifications     Faxback Doc. # 2561

    FORMATTED CAPACITY: 541,933,568 bytes (using MS-DOS 5.0)
       NUMBER OF DISKS: 6
         DATA SURFACES: 12
            DATA HEADS: 12
    TRACKS PER SURFACE: 1,806
         TRACK DENSITY: 2,150 tpi
       BYTES PER BLOCK: 512
      BLOCKS PER DRIVE: 1,061,928
AVERAGE SEEK TIMES (1): 12.0 ms (2)
       AVERAGE LATENCY: 6.7 ms
        ROTATION SPEED: 4,498 RPM

(1) Timing is measured through the interface with the drive operating at
    nominal DC input voltages.

(2) The average seek time is determined by averaging the seek time for a
    minimum of 1000 seeks of random length over the surface of the disk.

           TEMPERATURE:
             Operating: 41 to 131'F
         Non-Operating: -40 to 140'F
              HUMIDITY:
             Operating: 8 to 80% RH non-condensing
         Non-Operating: 8 to 80% RH non-condensing


(smm/jej-05/11/94)