EMC Replication Manager in Solaris
UPDATE: No ZFS Support for Replication Manager in the near future
Using storage level snapshots can be used to run backups without directly requiring resources from the original host.
EMC Replication Manager coordinates the creation of application consistent snapshots across all the hosts in your network. It handles scheduling creation/expiration of snapshots, mounting and unmounting from backup servers, etc. from a single console.
Although it is not tightly integrated into EMC Networker like the similar Networker PowerSnap module, it can be used to start a backup process after taking a new snapshot and it has the capability to manage snapshots unrelated to backups from a GUI.
While the data sheet claims support for Solaris, there are several caveats which I have run into.