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2.4Physical organization
Drive model | Read/write heads | Number of discs | |
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ST9500323CS | 4 | 2 | |
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ST9320328CS | 3 | ||
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ST9250311CS | 2 | 1 | |
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ST91603110CS | |||
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2.5Recording and interface technology
Interface | Serial ATA (SATA) |
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Recording method | Perpendicular |
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Recording density BPI (bits/inch avg) | 1,490k |
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Track density TPI (tracks/inch avg) | 265k |
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Areal density (Gbits/inch2 avg) | 394 |
Spindle speed (RPM) (± 0.2%) | 5,400 |
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Maximum Internal transfer rate (Mbits/sec) | 1,175 |
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I/O | 300 default / 150 available via Seagate specific SCT command |
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Interleave | 1:1 |
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Cache buffer | 8 Mbytes (8,192 kbytes) |
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2.6Physical characteristics
Drive specification |
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Height | (mm) | 9.5 | |
| (inches) | 0.374 | |
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Width | (mm) | 69.85 | |
| (inches) | 2.75 | |
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Length | (mm) | 100.35 +0.55 / | |
| (inches) | 3.957 | +0.079 / |
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Weight (max) |
| 110 grams | |
ST9500323CS, ST9320328CS, | 0.243 pounds | ||
ST9250311CS, ST91603110CS |
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2.7Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:
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•Average seek time is a true statistical random average of at least 5,000 measurements of seeks between ran- dom tracks, less overhead.
Table 2: Typical seek times
Seek times (msec)
Read
6 | Pipeline HD Mini Series SATA Product Manual, Rev. E |