On Mon, 21 Apr 2008, Dana H. Myers wrote: > Bob Friesenhahn wrote: >> Are there any plans to support ZFS for write-only media such as optical >> storage? It seems that if mirroring or even zraid is used that ZFS would >> be a good basis for long term archival storage. > I'm just going to assume that "write-only" here means "write-once, > read-many", since it's far too late for an April Fool's joke.
Yes, of course. Such as to CD-R, DVD-RW, or more exotic technologies such as holographic drives (300GB drives are on the market). For example, with two CD-R drives it should be possible to build a ZFS mirror on two CDs, but the I/O to these devices may need to be done in a linear sequential fashion at a rate sufficient to keep the writer happy, so temporary files (or memory-based buffering) likely need to be used. No one wants to be faced with a situation in which two copies are made to CD but both copies are deemed to be bad when they are read. ZFS could make that situation much better. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
