Micropolis 4345WD

Hard Disk Drive

Overview

Model	Capacity	Size	Height	Interface	Bus Type
Micropolis 4345WD	4.55 GB	3.5"	1/3HT	Ultra	SCSI3

Specifications

Size	3 1/2"
Interface	SCSI-3
Encoding Method
Formatted Capacity	4.55 GB
Disks	5
Heads	9
Cylinders	4811
Sectors	Variable
Buffer Size	N/A
Average Seek	7.9. msec
Single Track
Rotation Speed/Avg. Latency	7200 rpm +/- 0.5%
Transfer Rate to / from. media	20 Mbytes/sec Synchronous
Transfer Rate to / from buffer
Tracks Per Inch (TPI)
Bits Per Inch (BPI)
Dimensions	5.75"D x 4.0"W x 1.0"H
Weight	0.00 lbs.

Power Requirements

	+12V +/-5%	+5V +/-5%	Power
Spin up	.55A
Read / Write	1.75A	1.1A
Typical seeking			12 Watts

Notes

Notes:

Configuration Options

SCSI ID
Jumpers at Pin 3-4, 5-6, 7-8, & 9-10 select the SCSI ID.
Each SCSI device on one Host Adapter must have a unique SCSI ID (0-15).
SCSI ID0 is the Default.

SCSI ID	Pin 9-10	Pin 7-8	Pin 5-6	Pin 3-4
0 (default)	out	out	out	out
1	out	out	out	in
2	out	out	in	out
3	out	out	in	in
4	out	in	out	out
5	out	in	out	in
6	out	in	in	out
7	out	in	in	in
8	in	out	out	out
9	in	out	out	in
10	in	out	in	out
11	in	out	in	in
12	in	in	out	out
13	in	in	out	in
14	in	in	in	out
15	in	in	in	in

Interface Termination
An external terminator provides termination for the interface lines.
Suggested end-of-cable terminator: Methode DS2050-01-68D.

+5V to BUS (W3)
Jumper installed at W3 (Default) - Drive provides terminator power (TERMPWR) to the SCSI Bus.
Jumper omitted at W3 - Host system provides TERMPWR.

Spindle Control (SP0)
Jumper installed at SP0, jumper omitted at SP1 - Spindle motor starts when SCSI �START UNIT� command is received.
Jumpers omitted at SP0 (Default) and at SP1 - Spindle motor starts at power-on.

Spindle Delay (SP1)
Jumper installed at SP1, jumper omitted at SP0 - Spindle motor start-up delayed based on SCSI ID (12 seconds per SCSI ID).
Jumpers omitted at SP1 (Default) and at SP0 - Spindle motor starts at power-on.

Write Protect (WP)
Jumper installed at WP - Drive is write protected.
Jumper omitted at WP (Default) - Drive is not write protected.

BUS Parity Check (PTY)
Jumper installed at PTY - Drive neither generates nor detects parity.
Jumper omitted at PTY (Default) - Drive generates parity and has parity detection enabled.

Remote LED
Open-collector output - Used to drive a user-supplied LED to indicate the drive is active.