Cool-running, quiet operation, leading-edge performance and industry-leading reliability make these
next generation WD Caviar
SATA II drives the perfect hard drives for desktop and enterprise storage.
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- SATA 300 MB/sec Interface (SATA II 3Gb/sec)
- 16 MB cache buffer size
- 250GB, 500GB and 750GB at 7200 rpm
- 1TB drive employs IntelliPower technology a
fine tuned balance of spin speed, transfer rate and caching algorithms designed
to deliver solid performance and significant power savings.
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Lightning Fast – With state-of-the-art SATA II 300 MB/s transfer rates and 16 MB of cache, these drives push the boundaries of performance for their class.
Cool Running – Cool drive operating temperatures help increase long-term drive reliability. WD achieves the lowest operating temperature of any hard drive in its class, by lowering power consumption through advanced electronics and firmware.
Ultra Quiet – WD minimizes noise to levels virtually below the threshold of human hearing with its WhisperDrive technology, which features a highly efficient power driver design. And to cut seek noise, Soft Seek technology streamlines read/write seeking algorithms.
SecureConnect – provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives and cables. Also ensures backward compatibility with legacy SATA cables and
back planes.
FlexPower – connector technology that accepts power from both industry-standard and new SATA power supplies.
1TB Western Digital SATA II GreenPower
Drive – Currently available 1 TB hard
drives have a typical power consumption rating greater than 13.5 watts. Western
Digital has designed the first 3.5-inch hard drives that deliver power savings
as the primary attribute. Green Power drives from Western Digital yield average
drive power savings of 4-5 watts over competitors' drives while maintaining
solid performance.
That power savings equates to reducing CO2 emission by
up to 60 kilograms per drive per year - the equivalent of taking your car off
the road for 14 days each year. This new platform makes it possible for our
energy-conscious customers to build systems with higher capacities and the right
balance of system performance, ensured reliability and energy conservation.
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| 250GB,
500GB and 750GB Hard Drive Specifications |
| Rotational Speed |
7,200 RPM (nominal) |
| Buffer Size |
16 MB |
| Average Latency |
4.20 ms (nominal) |
| Seek Times
(Average) |
| Read Seek Time (Average) |
8.9 ms |
| Write Seek Time (Average) |
10.9 ms (average) |
| Track-To-Track Seek Time |
2.0 ms (average) |
| Full Stroke Seek |
21.0 ms (average) |
| Transfer
Rates |
| Buffer To Host (Serial ATA) |
300 MB/s (Max) |
| Buffer To Disk |
748 Mbits/s (Max) |
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| 1TB
GreenPower Hard Drive Specifications |
| Rotational Speed |
IntelliPower |
| Buffer Size |
16 MB |
| Drive ready time (2 disk) |
11 sec |
| Drive ready time (3 -4 disk) |
13 sec |
| Power
Requirements (2 disk) |
| Read/Write |
6W |
| Idle |
3.3W |
| Standby |
.97W |
| Sleep |
.97W |
| Transfer
Rates |
| Buffer To Host (Serial ATA) |
3 Gbits/s (Max) |
| Buffer To Disk |
1160 Mbits/s (Max) |
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