Date: Sat, 08 Jan 2000 19:16:02 -0800 From: "Randy A. Katz" <randyk@ccsales.com> To: Steve Kaczkowski <steve@inc.net>, dannyman <dannyman@dannyland.org> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Reccomend RAID for FreeBSD + Cyrus Message-ID: <3.0.5.32.20000108191602.03a36270@ccsales.com> In-Reply-To: <387423EB.EF2B3DD2@inc.net> References: <20000105165135.A29204@stumpy.dannyland.org>
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Hi Steve, Can you get a reading of the drive statuses from FreeBSD? At 11:11 PM 1/5/00 -0600, Steve Kaczkowski wrote: >dannyman wrote: >> >> I've set up a Cyrus IMAP/POP server for my company with Postfix as the MTA. >> >> We'll be getting a NetApp filer for /home and other happy NFS/CIFS sharing. >> I'm thinking to have a FreeBSD shell cluster available for users. >> >> Cyrus, though, is not a happy camper with NFS. I'm thinking to get a >> dedicated external RAID - the type with SCSI out. I've noticed some >> RAID boxen come with dual external connectors. If I could hook a RAID up to >> two boxen, and turn up the one when the other fails, that would rock. >> >> Of course, if my mail server crashes, I'm going to have to come in and do >> physical interaction anyway ... one cable manually transferred to a hot spare >> seems reasonable. >> >> My puzzle is what features do I want in my RAID, and where should I get it >> from. Some colleagues suggested that for mail, RAID 0+1 would be preferable >> to RAID5 for performance reasons. I tend to wonder though, if RAID5 may not >> be more appropriate if people are going to end up using the mail server to >> store old mail. >> >> This is all nice and theoretical, and I'd appreciate input, but what I really >> want are reccomendations - what products and vendors are particularly good to >> work with and which should I avoid. FWIW, I'm in the Silicon Valley. >> >> I mean, I'd want: >> redundant, hot-swap power, fans, etc. >> a hot spare >> expandable capacity >> > >Checkout the Mylex DAC960SX External SCSI to SCSI RAID controller. >Basically it's a box >that sits in a fullhigh 5.25" bay and has a number of SCSI channels on >it. You run one >side to your onboard (or PCI card) SCSI bus, then hookup one of the >other chains to you >array of disks. You then setup up the RAID (via cool LCD panel or serial >connection) in the controller, up to RAID 5, hot >spares,mirrors,etc,etc,etc. > >As far as your OS is concerned it sees one big disk,so do what you like >to it. Since all >RAID functions are being handled by the RAID controller there isn't any >performance issues >to worry about, it's just pure redundancy and speed... > >Very slick stuff.. > > > >-- >Steve Kaczkowski Time Warner Telecom IDD >steve@inc.net (414)908-9012 >http://www.inc.net (603)737-9209 Fax > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-isp" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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