I'd use two of your drives to create a mirrored partition where pg_xlog resides separate from the actual data.

RAID 10 is probably appropriate for the remaining drives.

Fortunately, you're not using Dell, so you don't have to worry about the Perc3/Di RAID controller, which is not so compatible with Linux...


 Thomas F. O'Connell
 Co-Founder, Information Architect
 Sitening, LLC
 110 30th Avenue North, Suite 6
 Nashville, TN 37203-6320

On Mar 31, 2005, at 9:01 PM, Steve Poe wrote:

Thanks for everyone's feedback on to best improve our Postgresql database for the animal hospital. I re-read the PostgreSQL 8.0 Performance Checklist just to keep focused.

We purchased (2) 4 x 146GB 10,000rpm SCSI U320 SCA drive arrays ($2600) and (1) Sun W2100z dual AMD64 workstation with 4GB RAM ($2500). We did not need a rack-mount server, so I though Sun's workstation would do fine. I'll double the RAM. Hopefully, this should out-perform our dual 2.8 Xeon with 4GB of RAM.

Now, we need to purchase a good U320 RAID card now. Any suggestions for those which run well under Linux?

These two drive arrays main purpose is for our database. For those messed with drive arrays before, how would you slice-up the drive array? Will database performance be effected how our RAID10 is configured? Any suggestions?


Steve Poe

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