Micropolis 1320/1330-Series

DRIVE SERIES SPECIFICATIONS

DRIVE SPECIFICATIONS - 1320/1330 SERIES

Capacity

Model Number
	1323/1333	1323A/1333A	1324/1334	1324A/1334A	1325/1335
Unformatted Capacity (MBytes) 42.7 53.3 64.0 74.7 85.3
Disk Platters 3 3 4 4 5
Read/Write Heads 4 5 6 7 8
Formatted Capacity (MBytes) 35.6 44.5 53.4 62.3 71.3
(All other specs are common for all members of the 1320 and 1330 Series) Bytes per Sector 512
Sectors per Track 17
Cylinders 1,024
Bytes per Track 10,416

PC Drive Types

Examine the entries in your system drive table and find the type that most resembles the head and cylinder parameters of the drive without exceeding these parameters. If you are using third-party installation/partitioning software, follow the instructions included with the software, as it may perform this step automatically.

Performance

Data Rate

	Seek Time (including settling time)
Track-to-Track 6 msec
Average 28 msec
Maximum 62 msec
Avg. Rotational Latency 8.33 msec
Rotational Speed 3600 rpm +/- 0.5%
Data Transfer Rate 5 Mbits/sec
Optimum Step Rate 20 microseconds or faster (buffered seek)
MTBF (power-on hours) 35,000 (1320-Series) 25,000 (1330-Series)
Positioner Fully balanced rotary voice coil
Parking Automatic park and lock

General Functional Specifications

	Form-Factor				5 1/4-inch, "full-height"
Interface ST-506/412
Encoding Method MFM (Modified Frequency Modulation) Although these drive may be capable of functioning in an RLL environment, Micropolis does not certify or warrant them for this application.
Sectoring Soft
Write Precompensation Start Cylinder 1024 Reduced Write Current Start Cylinder 1024 Landing Zone 1024
Mounting Plane Any orientation

Power Requirements

	+12V +/-5% (average)			2.0 A
+12V +/-5% (max. during start-up) 3.9 A
+5V +/-5% (average) 0.9 A
Power Dissipation, typical 29 Watts

Drive Configuration Information

(Board Layout and Jumper Options)

Downloads

Drive Warranty Information