[EMAIL PROTECTED] wrote:


As for IDE RAID, IDE RAID is an awesome idea. SCSI disks are just too
expensive. Infortrend has a cool IDE to SCSI or Fibre RAID system that
rocks.



Obviously, you're caught by those marketing geeks. You're taking bandwidth (MB/s)as performance index, which is irrelevant for database access. Limiting factor is average access time, and there's still no 3ms seek time ide disk. This is not a problem of the interface, it's just a fact that (for marketing reasons?) all server grade disks are not equipped with ide.
A good raid system will be able to have independend seeks issued on all disks in parallel, thus scaling by spindle number (only for parallel accessing processes of course, not for serialized access). What you're proposing is that the app should parallelize it, instead of leaving this to the instance that can (should) do this better.


Regards,
Andreas


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