U10 Family Product Manual, Rev. A | 5 |
1.0 Drive 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 ST320423A, ST315323A and the ST310212A.
1.1 Formatted capacity
Drive Model | Guaranteed Mbytes | Guaranteed | Bytes per |
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ST320423A | 20,485 | 40,011,300 | 512 |
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ST315323A | 15,364 | 30,008,475 | 512 |
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ST310212A | 10,242 | 20,005,650 | 512 |
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1.1.1 Default logical geometry
CHS Mode | Cylinders | Read/Write heads | Sectors per track |
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ST320423A | 16,383 | 16 | 63 |
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ST315323A | 16,383 | 16 | 63 |
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ST310212A | 16,383 | 16 | 63 |
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LBA Mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to
1.2 Physical organization
Drive Model | Read/Write heads (GMR) | Number of discs |
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ST320423A | 4 | 2 |
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ST315323A | 3 | 2 |
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ST310212A | 2 | 1 |
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