Hard Disk Drive Interface
Item | Specification |
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Vendor & Model Name | Seagate | Toshiba |
| HGST | WD |
| ST9250315AS | MK2555GSX |
| HTS545025B9 | WD2500BEVT |
| ST9320325AS | MK3263GSX |
| HTS545032B9 | WD3200BEVT |
| ST9500325AS | MK5055GSX |
| HTS545050B9 | WD5000BEVT |
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| WD6400BEVT |
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Capacity (GB) | 250, 320, 500 | 250, 320, 500 |
| 250, 320, 500 | 250, 320, 500, |
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| 640 |
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Bytes per sector | 512 | 512 |
| 512 |
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Data heads | 2, 3, 4 | 2, 3, 4 |
| 2, 3, 4 |
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Drive Format |
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Disks | 1, 2, 2 | 1, 2, 2 |
| 1, 2, 2 | TBD |
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Spindle speed (RPM) |
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| 5400 |
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Performance Specifications |
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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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Internal transfer rate | 1175 |
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| 875 |
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(Mbits/sec, max) |
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I/O data transfer rate | 300 | 3000 |
| 300 | 3000 |
(Mbytes/sec max) |
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DC Power Requirements |
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Voltage tolerance
5V ±5%
5V ±5%
5V ±5%
5V ±5%
20 | Chapter 1 |
