At 2:45 PM -0600 2004-10-25, Scott Long wrote: > RAID-0 yes, RAID-10 no, at least not for software RAID. The machine > winds up having to transfer the same data twice across the PCI bus, > twice through the controller, etc. If the controller is on a simple > PCI-32/33 bus then it will quickly become saturated. I can't speak for GEOM, but my experience with vinum is that software RAID, especially RAID-1+0 will totally smoke the bare hardware, and will smoke most any PCI hardware RAID controller you put it up against. Granted, my experience is a few years old, so if you've got any more recent data that shows in detail what the current situation is and explains why, I'd love to see it. Until then, I stand by my results at <http://www.shub-internet.org/brad/FreeBSD/vinum.html>. -- Brad Knowles, <brad_at_stop.mail-abuse.org> "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." -- Benjamin Franklin (1706-1790), reply of the Pennsylvania Assembly to the Governor, November 11, 1755 SAGE member since 1995. See <http://www.sage.org/> for more info.Received on Mon Oct 25 2004 - 19:22:25 UTC
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