For what it's worth, we are looking at this, but I cannot commit to if or
when we will do it. If this (or any other change request) is important for
you, you should contact your IBM sales/marketing/account rep and ask them
to open a formal requirement for you.

Regards,

Andy

Andy Raibeck
IBM Software Group
Tivoli Storage Manager Client Development
Internal Notes e-mail: Andrew Raibeck/Tucson/IBM@IBMUS
Internet e-mail: storman AT us.ibm DOT com

The only dumb question is the one that goes unasked.
The command line is your friend.
"Good enough" is the enemy of excellence.

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 2005-03-12
12:25:12:

> Laurent Bendavid <bendavid.laurent AT FREE DOT FR> wrote:
>
> >Stapleton, Mark wrote:
> >
> >>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> >>Behalf Of Egon Blouder
> >>
> >>
> >>>I am running a few huge file servers (~6-9 million files,
> >>>600GB-1.2TB data, 2GB MEM). In order to enhance backup speed I
> >>>tried to set resourceutilization to a higher value (5-10).
> >>>After setting that value I monitored dsm process during
> >>>backup. The process uses up to 2GB memory and exits with a
> >>>memory error message.
> >>>TSM Client ran out of memory.
> >>>Now I'm thinking about installing up to 8GB (max. for W2K Adv.
> >>>Server) additional memory for these clients. I'll set /PAE
> >>>boot option in boot.ini in order to enable more than 4GB of memory.
> >>>
> >>>Unfortunately I cannot figure out whether TSM client (5.2/5.3)
> >>>is able to use that additional memory using Address Window
> >>>Extension (AWE) API. Does anybody know whether it's supported?
> >>>
> >>>
> >>
> >>If using PAE doesn't get you what you want, try this workaround:
> >>
> >>1. Create multiple dsm.opt option files, each using a different
nodename
> >>and pointing at distinct disk drives. Example:
> >>
> >>   nodename nodeA
> >>   domain c: d: e:
> >>
> >>   nodename nodeB
> >>   domain f: g: systemobjects
> >>
> >>2. Create a TSM scheduler service for each nodename.
> >>3. Run backups (and restores) in parallel.
> >>
> >>--
> >>Mark Stapleton (stapleton AT berbee DOT com)
> >>Office 262.521.5627
> >>
> >>
> >>
> >>
> >We have the same problem.
> >
> >If you use TSM Win32 bits, you could not use more than 2GB memory,
after
> >dsmc exit with "ran out of memory".
> >/PAE didn't work in our tests.
> >
> >You could use only one dsmc process for one drive, so you have to check
> >if you don't exceed this limit for one drive
> >(depends on the number of objects inspected, 4 millions in my
situation).
> >
> >However, it's this requisite is ok, the workaround explain is ok.
> >
> >We are in the bad case, so we use other workaround :
> >- split backup with // dsmc on different file tree
> >- we realize that dsmc in command line have less memory consumption
than
> >dsmc sched
> >   (we have a PMR open ont this object)
> >- you could use memoryefficientbackup = yes => impact on backup time
> >
>
> Recently I read a Field Guide (or something like that) on how to run
> multiple schedulers at one time and how to feed them into one node.
>
> I know that I could use memoryefficientbackup=yes but my box has
> that much memory so why couldn't it be used? Additionally I disklike
> the implementation of memoryefficientbackup parameter. I would
> prefer setting the max memory limit for dsm processes. Why don't dsm
> processes use those 2GB memory and if more memory is needed to
> process backup dsm should move on memoryefficient behaviour.
>
> Btw.: Can anybody forward that to TSM Client R&D?
>
> Regards
>
> --
>
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