Date: Sat, 7 Nov 1998 23:08:30 -0700 (MST) From: "Kenneth D. Merry" <ken@plutotech.com> To: grog@lemis.com (Greg Lehey) Cc: bill@bilver.magicnet.net, freebsd-fs@FreeBSD.ORG Subject: Re: RAID1 Software vs Hardware Message-ID: <199811080608.XAA14179@panzer.plutotech.com> In-Reply-To: <19981108094916.T499@freebie.lemis.com> from Greg Lehey at "Nov 8, 98 09:49:16 am"
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Greg Lehey wrote... > On Saturday, 7 November 1998 at 8:31:26 -0500, Bill Vermillion wrote: > > They current have 6 classes - 0 thru 5 - and there is a chart > > in Adaptec's book on I/O subsytems listing the pro's'/con's of > > each. RAID2/3/4 aren't used, and from what I've seen drives that > > use to have spindle sync for byte/sector striping aren't being made > > anymore. But with drives now at 20MB/sec+ speeds, the old needs > > are gone. > > Correct. You'd be surprised how many products offer RAID-2/3/4, > though. I think the product manager got a checklist to tick off. I > have deliberately left these three out of Vinum. RAID 3 is still used, and is still useful. All of Pluto's products (see http://www.plutotech.com) use RAID 3. It works quite well for video data. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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