Hi. I am working on the ADM project within OpenSolaris. ADM is a Hierarchical Storage manager (HSM) for ZFS. An HSM serves several purposes. One is a virtualization of amount of disk space by copying (archiving to other media) a files data, then freeing that data space, when needed. Another is as a near continuous backup of users data. The archive process will capture file data at a much shorter interval than the typical backup cycle. These archives can be used as "vault" copies, etc. A backup has occurred when the complete data has been captured, and the ZFS metadata referencing those archive components has been made and retained.
Long background. Whew. My question to the communities is what a user or administrators expectation would be when an HSM is used in conjunction with a snapshot capable file system like ZFS, which uses a block sharing technology for snapshots. The project team and I ave some ideas, but would appreciate some real-life application and use case examples for validation and/or course correction to the ADM project. Although I am posting to zfs-discuss and storage-discuss, I would prefer replies to storage-discuss. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
