Product Description
Key Features
Superior reliability - Designed and manufactured to server-class standards to provide best-in-class enterprise reliability in high duty cycle environments. With 1.2 million hours MTBF, these drives have the highest available reliability rating on a high-capacity drive.
High capacity - Up to 750 GB of storage packed with server-class features and low cost-per-gigabyte value.
Fast - With a next-generation SATA interface, 3 Gb/s data transfer rate, native command queuing (NCQ), and 16 MB cache, these drives deliver optimum performance.
Low power - Active Power Save™ delivers best-in-class seek mode power consumption through an advanced WD firmware which conserves power in active seek modes without degrading performance.
RAID-specific, time-limited error recovery (TLER) - A feature pioneered by WD, significantly reduces drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.
Rotary Acceleration Feed Forward (RAFF™) - Provides best-in-class vibration tolerance by optimizing operation and performance when the drives are used in vibration-prone, multidrive systems such as rack-mounted servers or network storage.
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| Performance Specifications |
 |
Rotational Speed |
7,200 RPM (nominal) |
|
Buffer Size |
16 MB |
|
Average Latency |
4.20 ms (nominal) |
|
Start/Stop Cycles |
50,000 minimum |
|
| Seek Times |
|
Read Seek Time |
8.9 ms |
|
Write Seek Time |
9.6 ms (average) |
|
Track-To-Track Seek Time |
0.6 ms (average) |
|
Full Stroke Seek |
21.0 ms (average) |
|
| Transfer Rates |
|
Buffer To Host (Serial ATA) |
3 Gb/s (Max) |
|
Transfer Rate (Buffer To Disk) |
98 MB/s (Sustained) |
|
|
| Physical Specifications |
|
Formatted Capacity |
750,156 MB |
|
Capacity |
750 GB |
|
Interface |
SATA 3 Gb/s |
|
User Sectors Per Drive |
1,465,149,168 |
|
|
| Physical Dimensions |
| English |
|
Height |
1.028 Inches (Max) |
|
Length |
5.787 Inches (Max) |
|
Width |
4.00 Inches (+/- 0.010 inch) |
|
Weight |
1.61 Pounds |
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| Metric |
|
Height |
26.1 mm (Max) |
|
Length |
147 mm (Max) |
|
Width |
101.6 mm |
|
Weight |
0.73 kg |
|
|
| Environmental Specifications |
| Shock |
|
Operating Shock (Read) |
65G, 2 ms |
|
Non-operating Shock |
250G, 1 ms |
|
| Acoustics |
|
Idle Mode |
28 dBA (average) |
|
Seek Mode 0 |
34 dBA (average) |
|
| Temperature (English) |
|
Operating |
41 F to 131 F |
|
Non-operating |
-40 F to 149 F |
|
| Temperature (Metric) |
|
Operating |
5 C to 55 C |
|
Non-operating |
-40 C to 65 C |
|
| Humidity |
|
Operating |
5-95% RH non-condensing |
|
Non-operating |
5-95% RH non-condensing |
|
| Altitude (English) |
|
Operating |
-1,000 feet to 10,000 feet |
|
Non-operating |
-1,000 feet to 40,000 feet |
|
| Altitude (Metric) |
|
Operating |
-305M to 3,050M |
|
Non-operating |
-305M to 12,200M |
|
| Vibration |
|
Operating |
|
Linear |
20-300 Hz, 0.75G (0 to peak) |
|
Random |
10-300 Hz, 0.008 g / Hz |
|
|
Non-operating |
|
Low Frequency |
5-20 Hz, 0.195 inches (double amplitude) |
|
High Frequency |
20-500 Hz, 4.0G (0 to peak) |
|
|
| Electrical Specifications |
| Current Requirements |
|
12 VDC |
|
Read/Write |
545 mA |
|
Idle |
490 mA |
|
Standby |
6 mA |
|
Sleep |
6 mA |
|
|
5 VDC |
|
Read/Write |
685 mA |
|
Idle |
535 mA |
|
Standby |
180 mA |
|
Sleep |
180 mA |
|
|
Power Dissipation |
|
Read/Write |
11.5 Watts |
|
Idle |
8.5 Watts |
|
Standby |
0.97 Watts |
|
Sleep |
0.97 Watts |
|
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