Date: Sun, 13 Jul 2003 04:45:08 EST From: Andrea Venturoli <ml.ventu@flashnet.it> To: freebsd-questions@freebsd.org Subject: Re: vinum and hot-swapping Message-ID: <200307130245.h6D2j8HB000556@soth.ventu>
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** Reply to note from "Greg 'groggy' Lehey" <grog@freebsd.org> Sat, 12 Jul 2003 17:13:29 +0930
> The real performance penalty for RAID-5 is simply that writes require
> so much I/O. Expect 25% of the write performance of RAID-0.
Ok, I must ask this:
Shouldn't SCSI system allow paralell writes on different disks?
If so, why so much penalty?
bye
av.
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