On Mar 2, 2004, at 4:27 PM, Josh Berkus wrote:


Vivek,

I did a bunch of testing with different RAID levels on a 14 disk
array.  I finally settled on this:  RAID5 across 14 disks for the
data, the OS (including syslog directory) and WAL on a RAID1 pair on
the other channel of the same controller (I didn't want to spring for




With large RAID, have you found that having WAL on a seperate array actually
boosts performance? The empirical tests we've seen so far don't seem to
support this.

Yes, it was a noticeable improvement.



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