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Essentially, my question is: how does casper-rw (IIRC) work? Every time it boots, it copies the entire file? Every time it shuts down, it recreates it?

Also does its size affect the speed?

RTFM links on casper-rw/persistence appreciated.

share|improve this question
casper-rw isn't the only implementation of persistence. – Ignacio Vazquez-Abrams Mar 20 '12 at 6:05
Any other examples? – ben Mar 21 '12 at 5:13

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