We're using Legato and NDMP to backup our filers. While we aren't on 7G yet, we do have a couple of "large, large, large" data volumes. To work around the DAR limitation of 1 MM files, we use the qtree method you propose below. All data is stored in qtrees and each qtree is listed individually on the client in Legato. It creates a little more management overhead in that we have to be sure that all new top-level directories are added as qtrees (we've had a few sneak in that weren't) and add them to Legato, but it works well for us.
We're looking forward to Legato 7.2 to allow us to do multiple NDMP streams to a single tape device. Our filers backup to an Overland Neo 4100 with 4 x LTO-2 drives and we can't push the drives as fast as we'd like to.
Jeff Mery - MCSE, MCP National Instruments
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"John Stoffel" john.stoffel@taec.toshiba.com Sent by: owner-toasters@mathworks.com 05/05/2005 03:52 PM
To toasters@mathworks.com cc
Subject OnTap 7.0.1 and Legato Network 7.2
Hi all,
We're about o refresh our Netapps and move to OnTap 7.0.1 and back them up with Legato Networker 7.2, and hopefully NDMP, though we currently do NFS mounts to the (Solaris 5.8, E450) backup server.
We'd like to setup one large aggregate, with a small root FlexVol and a large large large data FlexVol, with a bunch of qtrees inside the flexvol.
So what are others doing to make their backups run quicky, and their restores to run reliably? I've got the release notes for Networker 7.2 and I see the limitation of one (1) million files in DAR restores, and since I know our volumes have lots more files than that... it could be a problem.
But maybe if we broke down our backups on a per-qtree basis, that would work?
What are other people doing for backups? Any gotchas or performance tuning hints would be appreciaited.
Thanks, John John Stoffel - Senior Staff Systems Administrator - System LSI Group Toshiba America Electronic Components, Inc. - http://www.toshiba.com/taec john.stoffel@taec.toshiba.com - 508-486-1087