On Mon, Jul 13, 2015 at 5:19 PM, Simon Hobson <li...@thehobsons.co.uk> wrote:
> > What's needed is a file system that can do what hard links do, but at the > > file page level. I imagine that this would work using the same Copy On > > Write logic used in managing memory pages after a fork(). > > Well some (all ?) enterprise grade storage boxes support de-dup - usually > at the block level. So it does exist, at a price ! > zfs is free and has de-dup. It takes more RAM to support it well, but not prohibitively so unless your data is more than a few TB. As with any dedup solution, performance does take a hit and its often not worth it unless you have a lot of duplication in the data. Selva
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