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Interestingly, my bias has always been that hardware de-dup (if available) would always be preferable to software de-dup like ZFS's own internal implementation,
by pinko 15y ago
Interestingly, my bias has always been that hardware de-dup (if available) would always be preferable to software de-dup like ZFS's own internal implementation, for performance reasons. Not so, apparently.
- bdonlan 15y agoThe problem is that the OS isn't aware of it, so it can't take advantage of the space savings; and moreover _because_ the OS isn't aware of it, the OS might make poor assumptions about data integrity. If there was a way for the OS to a) disable dedup when integrity is desired and b) exploit the space saved by using dedup, then it would be a good idea.