Date: Fri, 18 Oct 1996 20:45:05 -0500 (CDT) From: "Matthew N. Dodd" <winter@jurai.net> To: Ben Black <black@gage.com> Cc: fs@FreeBSD.org Subject: Re: ccd setup for striping Message-ID: <Pine.BSI.3.95.961018204227.13041B-100000@sasami.jurai.net> In-Reply-To: <9610181345.AA28374@squid.gage.com>
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On Fri, 18 Oct 1996, Ben Black wrote: > i'll assume by stability you mean fault-tolerance. honestly, this is a news > server we are talking about...is the news *that* important? i promise you > using software RAID will *kill* the server performance. When you have 150,000 customers news is a high availability application. (I don't have this problem yet, but know people who do.) I'd like to see your hard numbers as to the 'software RAID killing performance'. Its had the opposite effect here. Of course, we're not running RAID5, just interleaving. > also, the idea behind RAID is to use multiple disks to various ends: some > RAID levels do *not* give you data redundancy (striping without parity is > very fast, but not fault-tolerant, for instance), some make poor use of disk > space to avoid losing performance doing parity calculations (mirroring)...you > get the idea. I'm sorry, but a high end news server is seek bound. Run some tests on a test platform before you make statements about performance. Have a good one. | Matthew N. Dodd | winter@jurai.net | http://www.jurai.net/~winter | | Technical Manager | mdodd@intersurf.net | http://www.intersurf.net | | InterSurf Online | "Welcome to the net Sir, would you like a handbasket?"|
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