Date: Thu, 18 Apr 1996 03:21:50 -0600 (MDT) From: Dave Andersen <angio@aros.net> To: angio@aros.net (Dave Andersen) Cc: freebsd-questions@FreeBSD.org, gpalmer@FreeBSD.org, thekind@NETural.com Subject: Re: SCSI RAID controller support? Message-ID: <199604180921.DAA17482@shell.aros.net> In-Reply-To: <199604180543.XAA15760@shell.aros.net> from Dave Andersen at "Apr 17, 96 11:43:24 pm"
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Lo and behold, Dave Andersen once said: > Quite obviously, RAID 0 and RAID 3 have the potential to be > considerably faster than an ordinary disk. I don't know how they compare > to software striping as in the ccd, I don't think anyone's done any > comparisons.:) I've used some of these in graphic design applications, > and they *really* fly. A RAID level 0 array like the FWB Jackhammer is a > very pretty piece of equipment, though a tad expensive for most people. :) As a bit of a followup to this before Terry gets the chance to jump on me: The RAID level 3 disks perform very well in situations where they need high stustainable data transfer rates. The seek times, because of the parity checking, aren't as spectacular as level 0 or as something like software striping (ccd). In a heavy seeking environment with multiple users, RAID level 0 will still show performance bonuses, level 3 less so. -Dave Andersen -- angio@aros.net Complete virtual hosting and business-oriented system administration Internet services. (WWW, FTP, email) http://www.aros.net/ http://www.aros.net/about/virtual "There are only two industries that refer to thier customers as 'users'."
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