On Fri, 2010-08-06 at 18:49 -0400, BOB COSBY wrote:
> The VSM is RAID 6 architecture under the covers

Not to quibble (much), but VSM operates a log structured filesystem.
(There are indeed redundant parity tracks, which is the hallmark of RAID
6 devices, but that log structure ameliorates the well known RAID 5/6
write penalty to some extent.)  I wouldn't call it strictly RAID 6.

-- 
David Andrews
A. Duda and Sons, Inc.
david.andr...@duda.com

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