SUMMARY: sectors on a disk

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Good responses from all. Thanks for sparking the memories.

Basically
- the laws of physics are constant. There are time differences between
outer and inner edges.
- Sectors begin counting at the outside edge of the disk and spiral
inward to the middle.
- Forget all of this when using hardware RAID.

Sectors in the middle segment of the disk will have lowest average seek
time, but everyone is subject to rotational latency.

Good reference sources:
AIX Redbooks - Performance and tuning
Sun Performance and Tuning - Adrian Cockroft
Configuration and Capacity Planning by Brian Wong

Thanks to:
harvey@iotek.ns.ca
Damir Delija
Jonathon - goldthjj@bankofbermuda.com

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