I'm experimenting with DR recovery options on filers running 8.1.2P4, 7-mode.  We have 10G connections on all the filers.  I wanted to use SM since we get close to 1TB/hr transfer between primary and secondary for SM/SV relationships and we have licenses for this on everything.  I can't figure how to get data from the SV secondary back to the primary volume using SM.

It won't let me set up a SM on the secondary volume because it is a replication destination.  I can't delete the baseline snapshot, and a snapvault stop can take 6 hours or more.  Once it completes, the destination qtree is gone and SM won't work.

I'm going to look into SnapRestore, but it will require some new licenses for some of the filers.  Ndmpcopy seems unstable for 10TB volume transfers and is extremely slow and takes days.  Rsync of a volume with 50m files takes days also, partly because the rsync system only has a 1G connection.

Thanks,

Jeff

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Jeff Cleverley
Unix Systems Administrator
4380 Ziegler Road
Fort Collins, Colorado 80525
970-288-4611