Micropolis 1350-Series

DRIVE SERIES SPECIFICATIONS

DRIVE SPECIFICATIONS - 1350 Series

Capacity

Model Number
	1353	1353A	1354	1354A	1355

Unformatted Capacity (MBytes)
	85.3	106.6	127.9	149.3	170.6

Read/Write Heads
	4	5	6	7	8

Formatted Capacity (MBytes)
	75.4	94.2	113.1	131.9	150.8


(All other specs are common for all members of the 1550 Series)

	Bytes per Sector	512

	Sectors 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, 1370 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

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		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				ESDI

	Sectoring				Hard or Soft 
				(set by W1, see Configuration Information)

	Write Precompensation Start Cylinder	1024 *
	Reduced Write Current Start Cylinder	1024 *
		* These are effectively turned off by specifying a non-existent cylinder.
		  Some systems accomplish this by using a value of "-1".

	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		32 Watts

Drive Configuration Information

(Board Layout and Jumper Options)