Date: Wed, 6 Aug 1997 10:09:11 -0700 (PDT) From: Ulf Zimmermann <ulf@Alameda.net> To: ballanty@sfu.ca (Rob Ballantyne) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: two questions (ISA speed & raid like support) Message-ID: <199708061709.KAA17863@Gatekeeper.Alameda.net> In-Reply-To: <199708061618.JAA26649@fraser> from Rob Ballantyne at "Aug 6, 97 09:18:41 am"
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> Hello, > > I have two rather orthogonal questions about FreeBSD that I hope this > is the proper forum for. > > 2. A friend of mine an myself are thinking about setting up a > 8000 user production system (we expect only a small proportion to > use the system at once, but must maintain accounts for them all). > To increase reliablity of this production level server we would > like to use disk mirroring or perhaps RAID with some parity scheme. > I don't recall anything like this being mentioned on the Web Site > so I'm wondering if anyone is working on it or has worked on it? You can use the existing ccd to mirror the drives. I am preparing myself right now to write an extension for ccd to support RAID3 or RAID5 with parity, but this will still take some time and will also only be software. I have no idea yet how slow this will be. Depending on the money I would look at SCSI-2-SCSI raid controller, like from Adaptec, CMD, Mylex and others. > > Many Thanks, > > Rob > > -------------------------------------------------------------------------- > | Rob Ballantyne | | > | email: ballanty@sfu.ca | _____ | > | System Consultant | | | > | Operations and Technical Support | -----------O----------- | > | Simon Fraser University | | > | Burnaby, BC, CANADA V5A 1S6 | | > -------------------------------------------------------------------------- > > -- Ulf. -------------------------------------------------------------------------- Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-769-2936 Alameda Networks, Inc. | http://www.Alameda.net | Fax#: 510-521-5073
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