On Wednesday, 09.11.2005 at 22:07 -0800, Andrew Sharp wrote: > [...] > > This whole thread may be OT for this list, but you guys running 4 way > SMP opterons with three whole drives in a raid 5, throw away those > raid cards and just use the software raid. That's a perfectly sensible suggestion and I'm guessing it would work reasonably well. However, the system in question is a live system and it's not easy to simply change the disk arrangement on the fly: we are unfortunate in that the problem of "some apps locking-up during heavy write conditions" only manifested itself once the system was deployed and came into heavy use. However, I am planning on flashing the BIOS on the RAID controller during our next maintenance window. If that doesn't fix it, then we can perhaps try a backup-n-restore and use software RAID. Are you implying that the RAID card (or the megaraid driver) is faulty? Would you suggesting using a different controller in this case? Dave. -- Dave Ewart davee@ceu.ox.ac.uk Computing Manager, Cancer Epidemiology Unit Cancer Research UK / Oxford University PGP: CC70 1883 BD92 E665 B840 118B 6E94 2CFD 694D E370 Get key from http://www.ceu.ox.ac.uk/~davee/davee-ceu-ox-ac-uk.asc N 51.7518, W 1.2016
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