ADSM-L

Re: TSM and Restore....

2001-01-17 18:17:49
Subject: Re: TSM and Restore....
From: "Walker, Lesley R" <lesley.walker AT EDS DOT COM>
Date: Thu, 18 Jan 2001 12:19:17 +1300
For your current restore, I think you are pretty much stuck with the 266
mounts.

To make your life easier in the future, you could update the stgpool to
collocate=filespace, then it will try to keep separate tapes for each
filesystem.

The change would only apply to new volumes in that storage pool, so you
might want to do a "move data" on all of the existing volumes - it would
depend on how quickly it expires.

> -----Original Message-----
> From: Etienne Brachel [SMTP:hc_dmsr AT HOTMAIL DOT COM]
> Sent: Thursday, January 18, 2001 9:06 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      TSM and Restore....
>
> Hi TSM'rs,
>
> I had a strange experience today. I worked on a Sun Solaris system and it
> has the client 3.7.X installed.
>
> The system is backed up for approx. 5 years now
>
> A library is used containing 4 drives.
>
> This system has about 130 GB of data and collocation is used to keep data
> as
> much as possible on same volumes.
>
> In total there are 19 Volumes !!
>
> We needed to make a script to restore all filesystems to the Solaris
> machine. because
> "dsmc res -subdir=yes -preservepath=yes "/ /var /opt" "/restore/""
> is not possible. Only one source, for example "/var", can be specified.
>
> --ISSUE--
>
> Why isn't it possible to start one command-line session to restore all
> filesystems ?
>
> All restores are seperate sessions (filesystem by filesystem) . Every
> Session needs data of all 19 tapes (Incremental Forever). Why does TSM
> mount
> all 19 tapes for each session ? We have about 14 filesystems that need to
> be
> restored..... RESULT : 266 Tape Mounts......!!
>
> How does the GUI handle this ? does it also start a seperate session for
> each filesystem or directory that was selected for restore ?
>
> OR does it collect info for restore to see that only a one time mount is
> necessary to read the data of a volume for all filesystems that need to be
> restored ?
>
> Am I doin anything wrong ? or is this how restores are treated with
> command-line sessions... or maybe an overall treatment.. ?
>
> Is there another way of doin this ? because a 14 hours restore is
> necessary
> to restore all filesystems with collocation enabled... I think that is
> very
> poor..
>
> Hope someone can help me...
>
> Thanks and regards,
>
> Etienne Brachel
> Touch The Progress Services b.v.
> Certified Tivoli Storage Management Consultant
> e_brachel AT ttp-int DOT com
>
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