Marc G. Fournier wrote:
It's worth pointing out that your performance on the raid-5 can change for the better if you avoid having the stripe size be a power of 2. This is especially true if the (n)umber of disks are a 2^n.
Self-followup .. the server config is as follows ... did I do maybe mis-configure the array?
# Vinum configuration of neptune.hub.org, saved at Wed Feb 9 00:13:52 2005
drive d0 device /dev/da1s1a
drive d1 device /dev/da2s1a
drive d2 device /dev/da3s1a
drive d3 device /dev/da4s1a
volume vm
plex name vm.p0 org raid5 1024s vol vm sd name vm.p0.s0 drive d0 plex vm.p0 len 142314496s driveoffset 265s plexoffset 0s
sd name vm.p0.s1 drive d1 plex vm.p0 len 142314496s driveoffset 265s plexoffset 1024s
sd name vm.p0.s2 drive d2 plex vm.p0 len 142314496s driveoffset 265s plexoffset 2048s
sd name vm.p0.s3 drive d3 plex vm.p0 len 142314496s driveoffset 265s plexoffset 3072s
bassed on an initial config file that looks like:
neptune# cat /root/raid5 drive d0 device /dev/da1s1a drive d1 device /dev/da2s1a drive d2 device /dev/da3s1a drive d3 device /dev/da4s1a volume vm plex org raid5 512k sd length 0 drive d0 sd length 0 drive d1 sd length 0 drive d2 sd length 0 drive d3
Cheers, -.mag _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
