On Feb 26, 2010, at 11:55 AM, Lutz Schumann wrote: > This would be an idea and I thought about this. However I see the following > problems: > > 1) using deduplication > > This will reduce the on disk size however the DDT will grow forever and for > the deletion of zvols this will mean a lot of time and work (see other > threads regarding DDT memory issues on the list)
Use compression and deduplication. If you are mostly concerned about the zero fills, then the zle compressor is very fast and efficient. > 2) compression > > AS I understand it - if I do zfs send/receive (which we do for DR) data is > grown to the original size again on the wire. This makes it difficult. uhmmm... compress it, too :-) -- richard ZFS storage and performance consulting at http://www.RichardElling.com ZFS training on deduplication, NexentaStor, and NAS performance http://nexenta-atlanta.eventbrite.com (March 16-18, 2010) _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
