Micropolis 1370-Series

DRIVE SERIES SPECIFICATIONS

DRIVE SPECIFICATIONS - 1370 Series

Capacity

Model Number
	1373	1373A	1374	1374A	1375

Unformatted Capacity (MBytes)
	85.3	106.7	128.0	149.3	170.6

Disk Platters
	3	3	4	4	5

Read/Write Heads
	4	5	6	7	8

Formatted Capacity (MBytes)
	72.9	91.2	109.4	127.6	145.9


(All other specs are common for all members of the 1370 Series)

	Bytes per Sector		512

	Logical Blocks per Track	36

	Cylinders			1,024

	Bytes per Track			20,832

Note that all drives from 13xx series are based on the same chassis. Please refer to other models, like model 1325 and the respective series overview pages for more technical info: 1300 series, 1320 series, 1350 series

Illustration

Platters and r/w-heads of an openened hard-disk-drive — Opened Micropolis 1325 hard-disk-drive, showing data surfaces (platters) and r/w-heads
Illustration from the Micropolis Data Storage Guide

PC Setup

When using SCSI in a PC, the most common method is to run your SETUP program and define "No Drives Present". The SCSI Host Adapter will automatically self-configure on power-up. To install the drive, follow the manufacturer's instructions to use the on-board BIOS routine or software that was supplied with the Host Adapter.

Performance

	Seek Time (including settling time)

		Track-to-Track			5 msec

		Average				23 msec

		Maximum				50 msec


	Avg. Rotational Latency			8.33 msec

	Rotational Speed			3600 rpm +/- 0.5%


	Data Transfer Rate at Interface		1.6 Mbits/sec

	Internal Data Rate			10 Mbits/sec


	MTBF (power-on hours)			30,000


	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	1024

	Reduced Write Current Start Cylinder	1024

	Landing Zone				1024


	Mounting Plane				Any orientation

	Drivers/Receivers			Single-ended

Power Requirements

	+12V +/-5%				2.0 A average

	+12V +/-5% (max. during start-up)	4.25 A

	+5V +/-5% (average)			2.0 A


	Power Dissipation, typical		35 Watts

Drive Configuration Information

(Board Layout and Jumper Options)