Thanks Max, I have not been able to find any new firmware for these drives (Western Digital WD7500AAKS) so I have sent an email to Western Digital to enquire about firmware updates. I'll see what they reply with, but I'm not too hopeful.
In the meantime I decided to copy the files one at a time until the problem re-occurred. I have found the file that failed, but of course, it's probably likely that it will not be the same file being copied each time it fails, so it's probably a pointless task, but I was just curious. I will embark on iteration 2 now... Simon This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss