Western Digital WDE2170, Техническое справочное руководство

Страница: 5 / 54

WD Enterprise WDE2170/WDE4360 Table of Contents
4079-001045 Rev. B RELEASED 04-08-97 i
T T
ABLE OF ABLE OF
C C
ONTENTS ONTENTS
1. D
ESCRIPTION AND
F
EATURES
............................................................................. 1
1.1. General Description................................................................................................................. 1
1.2. Advanced Features .................................................................................................................. 2
1.3. Options ................................................................................................................................... 3
2. S
PECIFICATIONS
................................................................................................ 4
2.1. Performance Specifications...................................................................................................... 4
2.2. Physical Specifications ............................................................................................................ 5
2.2.1.
Physical Dimensions.................................................................................................. 6
2.3. Mechanical Specifications ....................................................................................................... 7
2.3.1.
Mounting................................................................................................................. 10
2.4. Electrical Specifications ........................................................................................................ 11
2.4.1.
Current Requirements and Power Dissipation .......................................................... 11
2.4.2. 12V Current Profile ................................................................................................. 12
2.4.3. Input Voltage Requirements..................................................................................... 13
2.4.4. Ripple...................................................................................................................... 13
2.4.5. Bring-Up Sequence.................................................................................................. 13
2.5. Environmental Specifications ................................................................................................ 14
2.5.1.
Shock and Vibration ................................................................................................ 14
2.5.2. Temperature and Humidity ...................................................................................... 16
2.5.3. Cooling.................................................................................................................... 16
2.5.4. Atmospheric Pressure .............................................................................................. 17
2.5.5. Acoustics ................................................................................................................. 17
2.6. Reliability Specifications ....................................................................................................... 20
2.7. Agency Approvals ................................................................................................................. 20
2.7.1.
Product Safety.......................................................................................................... 20
2.7.2. Electromagnetic Compatibility (EMC) ..................................................................... 20
3. A
DVANCED
P
RODUCT
F
EATURES
...................................................................... 21
3.1. Compatibility Testing ............................................................................................................ 21
3.2. SCSI-3 SPI Compliant........................................................................................................... 21
3.3. Embedded Servo Control ....................................................................................................... 21
3.4. Read Caching and Pre-Fetch ................................................................................................. 21
3.5. Write Caching ....................................................................................................................... 21
3.6. 512 Kilobyte Data Buffer....................................................................................................... 21
3.7. Adaptive Caching.................................................................................................................. 21
3.8. Command Queuing and Reordering....................................................................................... 22
3.9. Media Defect Management.................................................................................................... 22
3.10. Microcode Download............................................................................................................. 22
3.11. Reed Solomon ECC On-the-Fly ............................................................................................. 22
3.12. CRC Data Protection ............................................................................................................. 22
3.13. Zoned Recording ................................................................................................................... 23
3.14. Headerless Format ................................................................................................................. 23