Date: Mon, 13 Dec 1999 21:37:16 -0600 (CST) From: Jay Nelson <noslenj@swbell.net> To: Terry Lambert <tlambert@primenet.com> Cc: chat@FreeBSD.ORG Subject: Re: Log file systems? (Was: Re: dual 400 -> dual 600 worth it?) Message-ID: <Pine.BSF.4.05.9912132046590.782-100000@acp.swbell.net> In-Reply-To: <199912140104.SAA28673@usr08.primenet.com>
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On Tue, 14 Dec 1999, Terry Lambert wrote: [snip] >They are FAQs, not "in the FAQ". I suspect they probably should be in the FAQ. The average admin who doesn't follow mailing lists asks questions like this. The more we claim (justifiably) stability, the more seriously they evaluate FreeBSD against commercial alternatives. This is an area where few of us really understand the issues involved. >The archives you should be looking at, and the place you should be >asking the question are the freebsd-fs list. I did look in the fs archives -- although I'm not sure the general question belongs there since it seems to have more to do with the differences between FreeBSD and the commercal offerings. Is it fair to summarize the differences as: Soft updates provide little in terms of recovering data, but enhances performance during runtime. Recovery being limited to ignoring metadata that wasn't written to disk. Log file systems offers little data recovery in return for faster system recovery after an unorderly halt at the cost of a runtime penalty. Journaled filesystem offer the potential of data recovery at a boot time and runtime cost. I know this is disgustingly over simplified, but about all you can get through to typical management. I also have to admit, I'm a little confused with your usage of the word orthogonal. Do you mean that an orthogonal technology projects cleanly or uniformly into different dimensions of system space? -- Jay To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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