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| Specification |
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Interface |
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Hard Disk Drive Interface |
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Item |
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| Specification |
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Vendor |
| Seagate Momentus 5400.4 SATA |
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Model Name |
| ST9250827AS |
| ST9160827AS |
| ST9120817AS |
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Capacity (MB) |
| 250 |
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| 160 |
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| 120 |
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Bytes per sector |
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| 512 |
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Data heads |
| 4 |
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| 3 |
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| 2 |
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Drive Format |
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| |
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Disks |
| 2 |
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| 2 |
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| 1 |
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Spindle speed (RPM) |
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| 5,400 |
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Performance Specifications |
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Buffer size |
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| 8MB |
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Interface |
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| SATA |
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Internal transfer rate (Mbits/ |
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| 778 |
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sec max) |
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Sustained transfer rate |
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| 58 |
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(Mbytes/sec max) |
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I/O data transfer rate |
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| 300 |
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(Mbytes/sec max) |
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DC Power Requirements |
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Voltage tolerance |
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| 5V(DC) +/- 5% |
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Item |
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| Specification |
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| ||||
Vendor |
| Seagate Momentus 5400.5 SATA |
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Model Name |
| ST9320320AS | ST9250320AS |
| ST9160310AS | ST9120310AS |
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Capacity (MB) |
| 320 |
| 250 |
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| 160 |
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| 120 |
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Bytes per sector |
|
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| 512 |
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Data heads |
| 4 |
| 4 or 3 |
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| 2 |
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| 2 |
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Drive Format |
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Disks |
| 2 or 1 | 2 |
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| 1 |
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| 1 |
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Spindle speed (RPM) |
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| 5,400 |
|
|
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Performance Specifications |
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|
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Buffer size |
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| 8 MB |
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Interface |
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| SATA |
|
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|
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| ||
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|
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| |
Internal transfer rate |
|
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| 352 |
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(Mbits/sec max) |
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| |
I/O data transfer rate |
|
|
|
|
|
| 150 |
|
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| |
(Mbytes/sec max) |
|
|
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DC Power Requirements |
|
|
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| |
|
|
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|
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|
|
|
|
| ||||
Voltage tolerance |
|
|
|
|
| 5V(DC) +/- 5% |
|
|
| ||||
|
|
|
|
|
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|
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|
|
18 | Chapter 1 |
