There has been several discussions on this recently. In brief, most
likely the reclamation is slow when input is disk and not tape -
an output tape with no input tape. Going tape to tape is MUCH faster.
It is a basic TSM design problem that is accentuated by LTO start/stop.
Simple solution is to have disk pool emptier so reclaims will not use
disk as input for long. I have 3584 also. Everything else is very fast
with this library.
David Longo
>>> guillaume.gilbert AT DESJARDINS DOT COM 07/03/02 09:40AM >>>
Hey there
Maybe its because I'm used to using STK 9840 tapes but yesterday I saw an LTO
tape at 25 % utilisation take almost 4 hours to reclaim, which to me is awful.
How am I
supposed to reclaim my tapes with that kind of performance?. The drives I use
are IBM Ultriums in a 3584 library. With only 2 drives it makes it hard for
users to do
restores...
Are there any options I can change to make this go a bit faster. I know the
start/stop on LTO's isn't good.
Thanks for the help.
Guillaume Gilbert
CGI Canada
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