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| Typical disk parameters |
- Average seek times from 4-10 ms
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- Rotational speeds are 60, 90, 120, 250 revolutions per second, i.e. ,3600, 5400, 7200, 15000 rpm respectively
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- Sector sizes vary between 512 bytes and 1024 bytes
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- 400 to 1000 sectors per track
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- 20,000 to 50,000 tracks per surface
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