Backup to the disaster site using ZFS Replication 
Sunday, October 27, 2013, 07:46 - Oracle Solaris, ZFS-Replication
ZFS replication can be used to create a backup to the disaster site using a low bandwidth link. The replication is based on ZFS snapshots and only the amount of changed blocks between two snapshots on the filesystem need to be transferred to the disaster site after an initial transfer of all the data.
It can be used to replicate nearly all application data in a consistent manner as creating a snapshot is quick atomic operation. Therefore you can either shutdown the application or just put the application in a backup mode for a few seconds. If the data is stored in only one zfs filesystem the data should even be consistent without stopping or putting the application in a special mode, if the application is able to recover automatically after system crash.
A simple solution is the tool ZFS Replication on this site.



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