Western Digital Caviar wd2500bb 250GB SATA
Western Digital Caviar wd2500bb 250GB SATA
WD Caviar SATA hard drives are designed for mainstream desktop personal computers. They feature a fast 7200 RPM spindle speed, a 2 MB cache buffer, and up to 250 GB of storage. WD Caviar drives are built to the highest standards of quality and reliability by people who understand the importance of your data.
Availability: Phased Out
Key Features
-Fast 7200 RPM, 2 MB cache buffer
-Quiet - Fluid Dynamic Bearing (FDB) technology - Less friction means more
reliability; less heat, vibration, and noise.
How this WD hard drive protects your data
Data Lifeguard™ is an exclusive set of data protection features, including shock
protection, an environmental protection system and real-time embedded error
detection and repair. WD's Data Lifeguard technology automatically finds,
isolates, and repairs problems that may develop over the life of a hard drive.
Data Lifeguard Tools™ are software utilities designed for WD hard drives
that work with the embedded Data Lifeguard features to make hard drive
installation,diagnostics and repair both simple and worry-free. (Download Data
Lifeguard Tools)
ShockGuard™ instantaneously protects the hard drive against damage from bumps
and vibrations while it is running. This technology enables WD Caviar drives to
achieve industry-leading shock specifications.
Technical Specifications:
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Performance Specifications |
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Rotational Speed |
7,200 RPM (nominal) |
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Buffer Size |
2 MB |
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Average Latency |
4.20 ms (nominal) |
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Start/Stop Cycles |
50,000 minimum |
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Seek Times |
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Read Seek Time |
8.9 ms |
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Write Seek Time |
10.9 ms (average) |
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Track-To-Track Seek Time |
2.0 ms (average) |
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Full Stroke Seek |
21.0 ms (average) |
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Transfer Rates |
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Buffer To Disk |
748 Mbits/s (Max) |
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Buffer to Host (EIDE) |
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Mode
5 Ultra ATA |
100 MB/s |
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Mode
4 Ultra ATA |
66.6 MB/s |
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Mode
2 Ultra ATA |
33.3 MB/s |
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Mode
4 PIO |
16.6 MB/s |
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Mode
2 multi-word DMA |
16.6 MB/s |
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Physical Specifications |
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Formatted Capacity |
250,059 MB |
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Capacity |
250 GB |
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Interface |
EIDE 100 MB/s |
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User Sectors Per Drive |
488,397,168 |
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Physical Dimensions |
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English |
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Height |
1.028 Inches (Max) |
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Length |
5.787 Inches (Max) |
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Width |
4.00 Inches (+/- 0.010 inch) |
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Weight |
1.32 Pounds |
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Metric |
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Height |
26.1 mm (Max) |
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Length |
147 mm (Max) |
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Width |
101.6 mm |
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Weight |
0.60 kg |
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Environmental Specifications |
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Shock |
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Operating Shock (Read) |
65G, 2 ms |
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Non-operating Shock |
250G, 2 ms |
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Acoustics |
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Idle Mode |
28 dBA (average) |
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Seek Mode 0 |
33 dBA (average) |
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Seek Mode 3 |
29 dBA (average) |
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Temperature (English) |
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Operating |
41° F to 131° F |
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Non-operating |
-40° F to 149° F |
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Temperature (Metric) |
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Operating |
5° C to 55° C |
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Non-operating |
-40° C to 65° C |
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Humidity |
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Operating |
5-95% RH non-condensing |
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Non-operating |
5-95% RH non-condensing |
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Altitude (English) |
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Operating |
-1,000 feet to 10,000 feet |
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Non-operating |
-1,000 feet to 40,000 feet |
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Altitude (Metric) |
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Operating |
-305M to 3,050M |
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Non-operating |
-305M to 12,200M |
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Vibration |
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Operating |
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Linear |
20-300 Hz, 0.75G (0 to peak) |
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Random |
10-300 Hz, 0.004 g² / Hz |
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Non-operating |
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Low
Frequency |
5-20 Hz, 0.195 inches (double amplitude) |
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High
Frequency |
20-500 Hz, 4.0G (0 to peak) |
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Electrical Specifications |
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Current Requirements |
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12 VDC |
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Read/Write |
530 mA |
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Idle |
510 mA |
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Standby |
30 mA |
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Sleep |
30 mA |
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5 VDC |
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Read/Write |
450 mA |
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Idle |
400 mA |
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Standby |
150 mA |
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Sleep |
120 mA |
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Power Dissipation |
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Read/Write |
8.60 Watts |
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Idle |
8.10 Watts |
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Standby |
1.10 Watts |
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Sleep |
1.00 Watts |
