On Fri, 2010-05-07 at 03:10 +0900, Michael Sullivan wrote: > This is interesting, but what about iSCSI volumes for virtual machines? > > Compress or de-dupe? Assuming the virtual machine was made from a clone of > the original iSCSI or a master iSCSI volume. > > Does anyone have any real world data this? I would think the iSCSI volumes > would diverge quite a bit over time even with compression and/or > de-duplication. > > Just curious… >
VM OS storage is an ideal candidate for dedup, and NOT compression (for the most part). VM images contain large quantities of executable files, most of which compress poorly, if at all. However, having 20 copies of the same Window2003 VM image makes for very nice dedup. -- Erik Trimble Java System Support Mailstop: usca22-123 Phone: x17195 Santa Clara, CA Timezone: US/Pacific (GMT-0800) _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
