On Thu, 30 Mar 2006 at 10:38pm, Mark Hahn wrote

before the 9550, I never found attractive in price/performance:
expensive as hell and a lot slower than MD.  but the 9550 is really
quite impressive...

I like the 3wares for their ability to do true hot swap in hardware RAID 
mode.  I have 2 older servers with 7500 cards in 'em that I recently tried 
to migrate to md (for speed, as you mentioned).  All my testing with 
'mdadm --fail' went just fine.  However, when a disk actually died and the 
3ware booted it, the server hung.  So I migrated 'em back to hardware 
RAID (but RAID10 instead of RAID5).

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University