Date: Fri, 18 Dec 1998 18:56:36 +1030 From: Greg Lehey <grog@lemis.com> To: sthaug@nethelp.no Cc: patton@sysnet.net, dswartz@druber.com, freebsd-isp@FreeBSD.ORG Subject: Re: RAID solutions? Message-ID: <19981218185636.Z486@freebie.lemis.com> In-Reply-To: <5412.913964735@verdi.nethelp.no>; from sthaug@nethelp.no on Fri, Dec 18, 1998 at 08:05:35AM %2B0100 References: <19981218131434.M486@freebie.lemis.com> <5412.913964735@verdi.nethelp.no>
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On Friday, 18 December 1998 at 8:05:35 +0100, sthaug@nethelp.no wrote: >> Striping (``RAID 0'') will give you better speed for concurrent >> access, which is what you are talking about here. Mirroring (RAID-1) >> will give you better read performance, assuming your system balances >> reads across the mirror, but worse write performance. > > ... and the FreeBSD ccd mirroring does *not* balance the reads. It always > reads from the first disk in a mirror. Correct. But that's about the only package that does. Use vinum instead; it's much more advanced. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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