Quantum 1.2AT Specif Ic Ations, Quantum Bigfoot, Disk Drive Configuration, Environmental Limits

SPECIF IC ATIONS

Quantum Bigfoot	1.2	2.1	2.5
Form Factor	5.25 inch (Ultra Slim-Line)
Interface	Fast ATA-2
	40-pin dual in-line
Formatted Capacity (MB1)	1,286	2,110	2,577
Disk Drive Configuration
Disks	1	2	2
Heads/Recording Surfaces	2	4	4
Tracks per Surface	5,738
Sectors per Track	149 to 276
Bytes per Sector	512
Track Density (tpi)	4,298
Max. Flux Density (fci)	113,922
Max. Recording Density (bpi)	107,221
Encoding/Detection Method	16/17 PRML
Performance Specifications
Typical Seek Times2 (ms)
Average (read)	15.5
Track-to-Track	3.5
Full Stroke	30.0
Average Rotational Latency (ms)	8.33
Rotational Speed (RPM)	3,600
Internal Data Rate (Mb/sec)	48 to 84
Data Transfer Rates (MB/sec)
PIO Mode 4	16.6
DMA Mode 2	16.6
Buffer Size3 (KB)	128
Typical Power On to Drive Ready (sec)	11.5
Reliability Specifications
Projected Field MTBF (hours)	300,000
Start/Stop Cycles (controlled)	20,000 with dynamic braking
Preventive Maintenance	Not required
Nonrecoverable Data Errors (per bits read)	<10 per 1015
Error-Correction Method	160-bit Reed Solomon
Warranty4 (years)	3

Physical Specifications

Dimensions—inches (mm)
Width	5.75	(146.05)	5.75	(146.05)	5.75	(146.05)
Length	8.0 (203.2)		8.0 (203.2)		8.0 (203.2)
Height	0.75	(19.05)	0.75	(19.05)	0.75	(19.05)
Weight—pounds (kg)	1.55 (0.711)		1.64 (0.752)		1.64 (0.752)

Environmental Limits

Operating
Temperature (°C)	0 to 55
Non-Condensing Humidity (%)	5 to 85
Maximum Wet Bulb (°C)	29
Shock (G, 11ms)	10
Vibration (G, 5 to 200 Hz,
peak-to-peak)	1
Altitude (ft.)	-650 to 10,000
Non-Operating
Temperature (°C)	-40 to 75
Non-Condensing Humidity (%)	5 to 95
Maximum Wet Bulb (°C)	46
Shock (G, 11ms)	70
Vibration (G, 5 to 300 Hz,
peak-to-peak)	2
Altitude (ft.)	-650 to 40,000
Idle Sound (typ)
Pressure (dBA)	34
Power (bels)	3.9

Power Specifications

Nominal Voltage (V)	+5/+12
Voltage Margin (%)	±5/±10
Typical Power Draw (W)
Read/Write	5.0	5.5	5.5
Standby/Sleep	1.0	1.0	1.0
Idle	4.0	4.5	4.5
Operating5	6.5	7.0	7.0
Peak Current (mA on +5/+12)	425/1400

1Quantum defines a megabyte (MB) as 106 or 1,000,000 bytes.

2Seek times are at nominal environmental conditions and include settling.

3Up to 41KB used for firmware.

4This warranty is standard when products are purchased directly through authorized Quantum distributors/dealers. Unless otherwise agreed, a one-year warranty is provided to all OEMs purchasing directly from Quantum. End-user warranties provided by computer manufacturers may vary.

5Operating is defined as 40% seeking, 30% reading, 10% writing, and 20% idle.

For More Information

For more information about Quantum's quality products, call toll-free: 1-800-624-5545 in the U.S.A. and Canada, or visit our World Wide Web site: http://www.quantum.com

Quantum Corporation	Quantum Asia-Pacific Pte Ltd.
500 McCarthy Boulevard	9 Temasek Boulevard #24-00
Milpitas, California 95035 U.S.A.	Suntec Tower 2
1-800-624-5545	Singapore 038989
http://www.quantum.com	65 334 0880

European Headquarters	Quantum Peripherals Japan
Quantum Peripheral Products S.A.	Shinjuku Square Tower 4F
ICC-Building D	6-22-1 Nishi-Shinjuku
Route de Pre-Bois 20	Shinjuku-ku, Tokyo, 163-11 Japan
1215 Geneva Airport, Switzerland	813 5321 7900
41 22 929 9111

Specifications subject to change without notice.

© 1996 Quantum Corporation. All rights reserved. Quantum, the Quantum logo, DisCache, WriteCache, and Defect Free Interface are trademarks of Quantum Corporation registered in the U.S.A. and other countries. Capacity for the Extraordinary, Quantum Bigfoot, AutoTransfer, AutoRead, AutoWrite, AT-Bus Cable Select, and Diskware are trademarks of Quantum Corporation. Products mentioned herein are for identification purposes only and may be trademarks or registered trademarks of their respective companies.

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