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XFS: the filesystem of the future?XFS: the filesystem of the future?Posted Jan 24, 2012 21:42 UTC (Tue) by wazoox (subscriber, #69624)In reply to: XFS: the filesystem of the future? by martinfick Parent article: XFS: the filesystem of the future?
Generally speaking, dedupe is trading CPU and RAM for storage space. It has also the serious drawback of making many sequential IOs random. It probably makes sense when your storage stack is horribly expensive, or when you really need to squeeze out some more bandwidth on a replicated system, etc. However given current hard drives prices (even with the current 50% price hike) and subsystem performance (any 500 bucks RAID card can do 1 GB/s), it's almost always a gain only for the vendor.
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XFS: the filesystem of the future? Posted Jan 24, 2012 22:36 UTC (Tue) by khim (subscriber, #9252) [Link] On the other hand dedupe is pretty good fit for SSD. SSD is expensive (albeit less expensive then RAM) and seeks are not as important.
XFS: the filesystem of the future? Posted Jan 25, 2012 7:48 UTC (Wed) by wazoox (subscriber, #69624) [Link]
That's true, but so far dedupe is mostly touted for secondary-level storage, so SSDs are a bit of a stretch.
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