Messages in this thread | | | Date | Mon, 26 Nov 2001 11:11:05 +1300 | From | Chris Wedgwood <> | Subject | Re: Disk hardware caching, performance, and journalling |
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On Sun, Nov 25, 2001 at 02:45:57PM -0700, Kevin P. Fleming wrote:
I think if you have a large mail server and zero power protection, you've got much larger problems to worry about than write-behind caching on your disk drives... my servers have never (in my memory) experienced a catastrophic power failure, because they're too easy to avoid.
In the specific case of email; you want to make certain guarantees, and having data written to non-volatile storage is one of them.
As for power-failures, given enough time and enough hardware you will get them, even if your machines are dual or triple powered of diverse UPSs or -48V powered; it still is possible and _will eventually happen_ that something further down the line like the motherboard will fry or whatever.
People who assume that a small-window is small enough and decide that is 'good enough' are dangerous :)
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