XFS: the filesystem of the future?
Posted Feb 1, 2012 22:20 UTC (Wed) by magila
In reply to: XFS: the filesystem of the future?
Parent article: XFS: the filesystem of the future?
While there's been a lot of talk about consumer devices "lying" in this thread, they really don't behave any differently from server drives with the same cache settings. Both consumer and server drives provide an option to turn on write caching. Both will lie about writes completing when write caching is enabled. Both will only signal command completion when data has gone to disk if write caching is disabled. The only real difference is the default, most (but not all) enterprise drives ship with write cache disabled while all consumer drive ship with it enabled. Both give the option of changing the setting to whatever the user pleases.
 I vaguely remember hearing a story several years ago that a handful of ATA drive models where not respecting write cache settings. This was an isolated incident. Newer drives can reasonably be assumed to handle write caching correctly.
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