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2.0Drive 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 ST3160022A, ST3120025A, ST380012A, and ST360019A model drives.
2.1Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or defi- nition, see the appropriate section of this manual.
Drive specification | ST3160022A | ST3120025A | ST380012A | ST360019A |
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Formatted Gbytes (512 bytes/sector) | 160 | 120 | 80 | 60 |
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Guaranteed sectors | 312,581,808 | 234,441,648 | 156,301,488 | 117,231,408 |
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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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Physical read/write heads | 4 | 3 | 2 | 2 |
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Discs | 2 | 2 | 1 | 1 |
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Recording density, BPI (bits/inch max) | 595,000 |
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Track density, TPI (tracks/inch max) | 94,600 |
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Areal density, (Mbits/inch2 max) | 56.3 |
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Sustained data transfer rate OD (Mbytes/sec) | 48 |
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I/O | 100 |
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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 | 1 Mbyte (1,024 kbytes) |
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Height (mm max) | 26.035 mm (1.028 inches) |
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Width (mm max) | 101.6 mm (4.000 inches) |
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Length (mm max) | 146.99 mm (5.787 inches) |
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Weight (typical) | 635 grams (1.4 lb) |
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Average latency (msec) | 4.16 |
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10 sec |
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Standby to ready (sec typical) | 10 sec |
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Startup current (typical) 12V (peak) | 2.8 amps |
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<1.0 (read), <1.2 (write) |
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Average seek, read (msec typical) | 8.5 |
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Average seek, write (msec typical) | 9.5 |
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Seek power (typical) | 12.5 watts |
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U Series 9 Product Manual, Rev. D | 3 |