Sam,

I came across that particular issue in the past. If you are using the
GUI to perform your file-level NDMP restore then that's your problem!!!

If you want to have restore performance similar to that of your backup
then perform the restore via the CLI. It'll be a LOT faster. You may
create virtualfsmap using the appropriate paths as destination then
perform the restore operation.

Good luck.

BERTAUT TCHUISE
TSM/NetApp Storage Engineer
Legg Mason Technology Services
*410-580-7032
BTchuise AT leggmason DOT com

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Sam Sheppard
Sent: Wednesday, March 17, 2010 2:02 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] NDMP file level restore

We are testing NDMP/TOC in TSM 6.1.3.1. Backup is very fast and appears
to work very well. Restore of and individual file is a different story
altogether. We restored one 90MB file out of a backup of a 120GB volume
with no differentials. The restore took about 30 minutes.

I'm trying to figure out why such poor performance on file level
restore.
My initial assumption is that since the backup is at the block level and
the NAS file system is write-anywhere, the blocks for an individual file
could be scattered all over the tape (TS1120).

Anyone have any experience/suggestions with file-level NDMP restore?

Thanks
Sam Sheppard
San Diego Data Processing Corp.
(858)-581-9668

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