On 16 jun 2011, at 21:31, Roger Deschner wrote:

> For TSM restores that will be from tape, I am discovering that RESTORE
> -FILELIST is a whole lot faster for restores of multiple files than
> RESTORE <filespec with wildcard>. So I'm building a script to run QUERY
> BACKUP and then turn those results into a form for RESTORE -FILELIST.
> The performance difference is dramatic - several hours for RESTORE
> <filespec> compared to 5-20 minutes for RESTORE -FILELIST. I am
> wondering why this is as I exploit this technique.
> 

because a single restore is executed in tape order... single pass over each 
tape needed...



> TSM server 5.5 on AIX, LTO-4 tape.
> 
> Roger Deschner      University of Illinois at Chicago     rogerd AT uic DOT 
> edu
> ====================== Happy 100th Birthday, IBM! ======================

-- 
Met vriendelijke groeten/Kind Regards,

Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622