3.0Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the following drive models:
ST32000644NS ST31000524NS ST3500514NS
3.1Specification summary tables
The specifications listed in the following tables are for quick reference. For details on specification measure- ment or definition, see the appropriate section of this manual.
Table 1: Drive specifications summary
Drive specification | ST32000644NS |
| ST31000524NS | ST3500514NS |
Formatted (512 bytes/sector)* | 2TB |
| 1TB | 500GB |
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Guaranteed sectors | 3,907,029,168 |
| 1,953,525,168 | 976,773,168 |
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Heads | 8 |
| 4 | 2 |
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Discs | 4 |
| 2 | 1 |
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Bytes per sector | 512 |
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Default sectors per track | 63 |
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Default read/write heads | 16 |
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Default cylinders | 16,383 |
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Recording density, KBPI (Kb/in max) | 1421 |
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Track density, KTPI (ktracks/in avg.) | 240 |
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Areal density, (Gb/in2 avg) | 347 |
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Spindle speed (RPM) | 7200 |
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Internal data transfer rate | 1300 |
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(Mb/s max) |
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Sustained data transfer rate OD | 140 |
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(MB/s max) |
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I/O | 300 |
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(MB/s max) |
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ATA | PIO modes |
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| Multiword DMA modes |
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| Ultra DMA modes |
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Cache buffer | 64MB |
| 32MB |
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Height (mm max) | 26.1mm (1.028 in) |
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Width (mm max) | 101.6mm (4.000 in) +/- 0.010 in |
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Length (mm max) | 146.99mm (5.787 in) |
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Weight (max) | 710g (1.565 lb) |
| 640g (1.411 lb) | 610g (1.345 lb) |
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Average latency | 4.16ms |
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4 | Constellation ES Serial ATA Product Manual, Rev. D |
