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  3. July 2005

RE: 820 to 520 Upgrade

Huge?  :)

Well, actually it depends:
- Does the new box have the appropriate amount of RAM?  You're tripling
the theoretical max CPWs but max throughput cannot be achieved without
sufficient RAM.
- Is the number of disk arms sufficient?  It can be less than your old
box, as Rob has commented on in the past, but too few can still create a
choke-point.
- 10K or 15K disks?
- 2780 or other disk controller?  Mirroring or RAID5?

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