DRIVE SERIES SPECIFICATIONS
DRIVE SPECIFICATIONS - MODEL 1598-15
Formatted Capacity
Per Drive 1034.6 MB
Bytes per Sector 512
Sectors per Track 71
Cylinders 1,928
Disk Platters 8
Read/Write Heads 15
Performance
Data Rate
Seek Time (including settling time)
Track-to-Track 4 msec
Average 14.5 msec
Maximum 33 msec
Avg. Rotational Latency 8.33 msec
Rotational Speed 3600 rpm +/- 0.5%
Data Transfer Rate at Interface
Synchronous 4 MB/sec
Asynchronous 1.8 MB/sec
Internal Data Rate 20 Mbits/sec
MTBF (power-on hours) 150,000
Positioner Fully balanced rotary voice coil
Parking Automatic park and lock
General Functional Specifications
Form-Factor 5 1/4-inch, "full-height"
Interface SCSI
Supports Full Common Command Set Yes
Write Precompensation Start Cylinder 1928
Reduced Write Current Start Cylinder 1928
Landing Zone 1928
Mounting Plane Any orientation
Drivers/Receivers Single-ended
Power Requirements
+12V +/-5% (average) 1.5 A
+12V +/-5% (max. during start-up) 4.35 A
+5V +/-5% (average) 2.0 A
Power Dissipation, typical 30 Watts
(Board Layout and Jumper Options)
Drive Warranty Information
Notes on OEM use
Digital Equipment Corporation (DEC) used the Micropolis 1598 drives white-labeled as the DEC RZ57 / RZ57-E
hard-disk drives for their PDP11/10 VAX machines.
This drive was also commonly used in Micropolis
MicroDisk 1030
desktop SCSI drive enclosures.
More about Micropolis OEM supplies can be read in
Legacy OEM products.