On Tue, 22 Apr 2008, Jonathan Loran wrote: >> > I suppose with ditto blocks, this has some merrit. Someone needs to > characterize how errors probigate on different types of WORM media. perhaps > this has already been done. In my experience, when DVD-R go south, they > really go bad at once. Not a lot of small bit errors. But a full analysis > would be good. Probably it would make the most sence to write mirrored WORM > disks with different technology to hedge your bets.
It does not really matter since ZFS supports various forms of RAID, including arbitrary mirroring. If possible, the media can be purchased from different vendors so there is less chance of similar bit-rot across the lot. With $40 to $200 million spent per project, a few extra copies is in the noise. :-) 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
