This will not work.
A single Windows process can not grow to more than 2 Gb of memory. I have a
similar issue on a box with 6Gb memory and multiple 1-2Tb file systems. Best
option we could come up with was Journal based backups, which enhances the
speed of backup and make things stable most of the time. Exception is if the
system crashes and the journal needs to be recreated.
Steve Young
Information Services
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Andrew Raibeck
Sent: Saturday, March 12, 2005 6:29 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Windows TSM Client: PAE/AWE enabled?
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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