On Sun, Mar 11, 2012 at 3:49 PM, Caitlin Bestler <caitlin.best...@nexenta.com> wrote: > Restricting fingerprinting to blocks would make block level compares > possible, but as I noted on an earlier reply > it would *always* require that the blocks be transferred to perform the > calculation. It is a lot harder to double > Network bandwidth than to double storage.
hmm? why is it harder? It might be more expensive to add 10/40G ports but with LAG's it's as possible... Deduplication that only saves disk space is leaving the larger problem > of network bottlenecks unaddressed. Doesn't that depend on the ratios of read vs write? In a read tilted environment (e.g. CDN's, image stores etc), being able to dedup at the block level in the relatively rare write case seems a boon. The simplification this could allow - performing localized dedup (i.e. each object server deduping just its local storage) seems worth while. > _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
