1.2Device Specifications
1.2.1Specifications summary
Table 1.1 shows the specifications of the disk drive.
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| Table 1.1 | Specifications |
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Formatted Capacity (*1) | 20.49 GB |
| 30.74 GB |
| 40.99 GB | ||
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Number of Disks | 1 |
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| 2 |
| 2 | |
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Number of Heads | 2 |
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| 4 |
| 4 | |
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Number of Cylinders |
| 30,784 + 735 + 30 |
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(User + Alternate & SA) |
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Bytes per Sector |
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| 512 |
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Recording Method |
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| 48/52 CC2EPRML |
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Track Density |
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| 33,000 TPI |
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Bit Density | 491,112 BPI |
| 364,119 BPI |
| 491,112 BPI | ||
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Rotational Speed |
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| 7,200 rpm |
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Average Latency |
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| 4.17 ms |
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Positioning time (Fast) |
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• | Minimum |
| (Read) 0.8 ms typical, (Write) 1.0 ms typical | ||||
• | Average |
| (Read) 8.5 ms typical, (Write) 9.5 ms typical | ||||
• | Maximum |
| (Read) 16 ms typical, (Write) 17 ms typical | ||||
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Positioning time (Slow) |
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• | Minimum |
| (Read) 0.8 ms typical, (Write) 1.0 ms typical | ||||
• | Average |
| (Read) 11 ms typical, (Write) 12 ms typical | ||||
• | Maximum |
| (Read) 20 ms typical, (Write) 21 ms typical | ||||
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Start/Stop time |
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• Start (0 rpm to Drive Read) |
| Typical: 8 sec., | Maximum: | 15 sec. | |||
• Stop (at Power Down) |
| Typical: 20 sec., | Maximum: 30 sec. | ||||
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Interface |
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| (Maximum Cable length: 0.46 m) | ||||
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Data Transfer Rate |
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• | To/From Media | 38.0 to 60.7 MB/s |
| 27.9 to 49.7 MB/s |
| 38.0 to 60.7 MB/s | |
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| 16.7 MB/s Max. (burst PIO mode 4, burst DMA mode 2), | |||||
• | To/From Host |
| 66.6 MB/s Max. (burst ultra DMA mode 4) | ||||
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| 100.0 MB/s Max. (burst ultra DMA mode 5) | ||||
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Data buffer |
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| 2 MB |
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Physical Dimensions |
| 26.1 mm max. × 101.6 mm × 146.0 mm | |||||
(Height × Width × Depth) |
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| (1.0” max. × 4.0” × 5.7”) |
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Weight |
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| 600 g or less |
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*1: Capacity under the LBA mode.
Under the CHS mode (normal BIOS specification), formatted capacity, number of cylinders, number of heads, and number of sectors are as follows.
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