Seagate ST251 - User Manual

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ST251/ST251

RIST277R

Product

Manual

February 3, 1987

36035-001,

Revision A

920

Disc Drive, Scotts Valley, CA 95066-4544, USA

Telephone:

408/438-6550.

Telex: 176455 SEAGATE SCVL

c5S»

seagate

Main Page

Table of Contents3
Specification Summary9
Drive Capacity9
- Unformatted Capacity9
- Formatted Capacity9
- Physical Organization9
Access Time Definition and Timing10
Step Pulse Period and Seek Method10
Functional Specifications11
S Recording Methods11
Physical Specifications11
Reliability Specifications12
- Read Error Rates12
  - Bit Jitter12
- Media Defects12
  - St277R13
Environmental Specifications13
- Ambient Temperature13
  - St25113
  - St251R/277R13
- Temperature Gradient13
- Relative Humidity14
- Altitude Limits14
- S Shock and Vibration Specifications14
- Handling Precautions21
- Shipping Zone21
Auto-Truncation21
Figure 4. Read/Write Timing22
Typical Drive Timing22
Figure 5. Buffered-Seek Timing23
Figure 6. Auto-Truncation Timing23
Drive Configuration25
Drive Configuration Shunt J725
Figure 7. Host/Drive Interface Connectors25
Drive Select26
- Daisy-Chain/Radial Drive Configurations26
Write Fault Latch Options: JP1 and J726
DC-Unsafe Option: JP227
Precompensation27
Life-Test27
ST251 1251 RI277R Product Manual, Rev.a28

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Seagate ST251 Specifications

General

Brand	Seagate
Model	ST251
Category	Storage
Language	English

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