2 | U Series CE Family Product Manual, Rev. A |
Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.
Drive Specification | ST380020ACE | ST360020ACE | ST340810ACE | ST320410ACE | |
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Formatted Gbytes | 80 | 60 |
| 40 | 20 |
(⋅ 106 bytes) |
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Guaranteed sectors | 156,301,488 | 117,231,408 |
| 78,165,360 | 39,102,336 |
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Bytes per sector |
| 512 |
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Default sectors per |
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track |
| 63 |
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Default read/write |
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heads |
| 16 |
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Default cylinders |
| 16,383 |
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Physical read/write | 4 | 3 |
| 2 | 1 |
heads |
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Discs | 2 | 2 |
| 1 | 1 |
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Recording density |
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BPI (bits/inch max) |
| 562, 436 |
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Track density TPI |
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(tracks/inch) |
| 58,000 |
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Areal density (Mbits/ |
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inch2 max) |
| 32,622 |
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Spindle speed (RPM) |
| 5,400 |
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Internal |
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rate (Mbits/sec max) |
| 436 |
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I/O |
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(Mbytes/sec max) |
| 100 |
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ATA |
| PIO modes |
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modes |
| Multiword DMA modes |
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supported |
| Ultra DMA modes |
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Cache buffer (Mbytes) |
| 2 |
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Height (mm max) |
| 26.1 |
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Width (mm max) |
| 101.8 |
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Length (mm max) |
| 147.0 |
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Weight (typical) |
| 680 grams (1.5 lb) |
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