[linux-lvm] snapshot pools, lvm roadmap
Stuart D. Gathman
stuart at bmsi.com
Sat Jan 8 16:17:05 UTC 2011
On Fri, 7 Jan 2011, Brian Neu wrote:
> > I'm not sure what "Volume Shadow Copy" actually does, but we use DRBD (Data
> > Replicating Block Device) to remotely mirror block devices - which could be
> > marketed as "Volume Shadow Copy".
> MS's VSS is their implementation of snapshots at the fs level. For instance,
> you can set the C drive to back up to a D drive, allocating 80GB for all C
> drive snapshots. Snapshots are removed automatically on a First-In,
> First-Out basis as the storage ceiling is reached. Because the storage is
> shared, they can also be deduplicated for speed and storage efficiency.
Then the open equivalents would be Btrfs and Zumastor on LVM. I think ZFS
does what you want also (and is enterprise ready on Solaris).
Stuart D. Gathman <stuart at bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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