[Beowulf] Big storage
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Greg Lindahl lindahl at pbm.comTue Apr 15 16:31:34 PDT 2008
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On Tue, Apr 15, 2008 at 06:02:51PM -0500, Bruce Allen wrote: > So far we have not seen any signs of data corruption on Linux+Areca > systems (and our data files carry both internal and external checksums, so > we would be sensitive to this). Check out these papers from Fast08, they're based on NetApp data for more than a million disks: http://www.usenix.org/event/fast08/tech/full_papers/krioukov/krioukov.pdf http://www.usenix.org/event/fast08/tech/full_papers/bairavasundaram/bairavasundaram.pdf http://www.usenix.org/event/fast08/tech/full_papers/jiang/jiang.pdf And, finally, this one makes you wonder how Linux storage works at all: http://www.usenix.org/event/fast08/tech/full_papers/gunawi/gunawi.pdf Internal checksums for small files can be defeated for lost writes. I take it that your external checksums are stored in a totally different place? In which case you ought to be pretty well covered. -- greg
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