Or you could use Tim Fosters ZFS snapshot service 
http://blogs.sun.com/timf/entry/zfs_automatic_snapshots_now_with

/peter

On Jun 6, 2008, at 14:07, Tobias Exner wrote:

> Hi,
>
> I'm thinking about the following situation and I know there are some
> things I have to understand:
>
> I want to use two SUN-Servers with the same amount of storage capacity
> on both of them and I want to replicate the filesystem ( zfs )
> incrementally two times a day from the first to the second one.
>
> I know that the zfs send/receive commands will do the job, but I don't
> understand exactly how zfs will know what have to be transferred..  
> Is it
> the difference to the last snapshot?
>
> If yes, does that mean that I have to keep all snapshots to achieve an
> "incremental-forever" configuration?  --> That's my goal!
>
>
>
>
> regards,
>
> Tobias Exner
>
>
> _______________________________________________
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> zfs-discuss@opensolaris.org
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