On Mon, Nov 2, 2009 at 9:01 PM, Jeremy Kitchen
<kitc...@scriptkitchen.com> wrote:
>
> forgive my ignorance, but what's the advantage of this new dedup over the
> existing compression option? Wouldn't full-filesystem compression naturally
> de-dupe?
No, the compression works on the block level. If there are two
identical blocks, then compression will reduce the number of bytes to
store on disk in both of them. However, there still will be two
identical copies of the compressed data. Dedup will remove the extra
copy. So that compression and dedup are complimenting each other.
--
Regards,
Cyril
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
