Date: Tue, 22 Jun 2004 00:57:52 -0600 From: "Chad Leigh -- Shire.Net LLC" <chad@shire.net> To: Bill Moran <wmoran@potentialtech.com> Cc: FreeBSD-questions <questions@freebsd.org> Subject: Re: What's the best possible email failover solution Message-ID: <7B04A918-C419-11D8-AB72-003065A70D30@shire.net> In-Reply-To: <20040621172520.3544d6fe.wmoran@potentialtech.com> References: <20040621132006.2b1a296f.wmoran@potentialtech.com> <a22ff294040621115173bad2e0@mail.gmail.com> <20040621172520.3544d6fe.wmoran@potentialtech.com>
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On Jun 21, 2004, at 3:25 PM, Bill Moran wrote: > >> You'd be much better off with some sort of NAS in a raid >> config, even if it were home grown, to store the spools. > > We already have a "home-grown NAS" (just a FreeBSD box with Vinum > RAID) but > it doesn't protect me if the machine with the drives has a power > supply or a > mobo or a CPU go south. I don't know if a NAS is any more reliable > than a > PC, but it's still a single point of failure. Yes, but your scenario of losing all the mail before the backup if something goes poof is covered. In other words, if a CPU or a MB goes poof, you do not lose your mail stores. Your RAID disk protects you against that. Your mail may not be accessible while you replace a MB or CPU or PS (get redundant PS), but you do not lose it, which is the failure you wanted to protect against. My mail server has redundant power supplies and adaptec raid cards (SCSI disks) doing HW mirroring with hot spare. I have not had a problem ever losing mail (since Jan 1997 when we started business). Chad
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