Just to add what others have said about NDMP and Legato, here's my experience:
1. You can use nfs mounts with legato fine, but you will not get CIFS metadata that way. So if you're only using NFS on your filer, I would recommend using nfs mounts instead of NDMP...more flexible and fewer juke issues down the road. If you're using CIFS you will probably want to retain your user permission data.
2. our juke (ATL1500) requires an ungodly amount of load sleep and unload sleep time to be able to mount and unmount tapes. I have it set to 300 sec on every sleep time that affects loading. What happened with the default (5 sec I think) is that it would get the signal to load the tape, then get the signal to read the label way before the tape was in the drive, and therefore think the drive was empty, and come back with an error. Icky. Once we increased the load times, all was ok.
3. NDMP can't do incremental backups (differentials are fine)...we do a full one night and level 1's the rest of the week, and that works fine.
4. we had the juke directly attached to the filer but for various reasons related to our particular environment we ended up attaching it to a sun machine and using a 3-way NDMP setup to back up the filer. It's not as fast as direct attach but it does work. In the unlikely event that you need to do this, feel free to email me direct and I'll be happy to walk you through it. You'll probably only need to do this if you've significantly angered one of ye elder gods, though...it's not normal.
I've been running NDMP/Legato for about 2 years now and have probably seen every possible error message, so you can file me in your contacts if you like...good luck
Mary Dell Server Administrator Mesirow Financial mdell@mesirowfinancial.com
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