ADSM-L

Re: restore: sequence of volumes

2005-04-29 06:00:08
Subject: Re: restore: sequence of volumes
From: TSM <tsm AT PROFI-AG DOT DE>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 29 Apr 2005 11:44:35 +0200
Thanks for the answer, but ...

I know:

For a restore the TSM server sorts the files/directories by volumes and
position on the volumes.

I want to know:

Then the restore begins. And now, which volume is processing first, next,
... ?
What are the rules for this ?

Andreas.





Richard Sims <rbs AT BU DOT EDU>
Gesendet von: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
28.04.2005 19:22
Bitte antworten an "ADSM: Dist Stor Manager"

        An:     ADSM-L AT VM.MARIST DOT EDU
        Kopie:
        Thema:  Re: restore: sequence of volumes


Andreas -

The simple answer is that, yes, that is the sequence, where realistic.
TSM wants to recreate the directory structure first, which is most
readily done in Unix, but will be done one way or the other (as in
creating temporary surrogates, to get actual directory info later, when
encountered in tapes, per Restore Order processing). And TSM is no
fool, in seeking to restore files from the most efficient source, which
is to say the highest level in the storage pool hierarchy, when the
data is available there. It's not something you configure: it's part of
the philosophy of the product.

    Richard Sims    http://people.bu.edu/rbs

On Apr 28, 2005, at 12:00 PM, TSM wrote:

> Hi All,
>
> restoring a full filesystem, what is the sequence of volume usage ?
>
> Because the directories and the last incr backups are stored in disk
> volumes
> and restoring the last backups first,
> I want the following sequence:
>
> 1. restore directories.
> 2. restore files from disk volumes.
> 3. restore files from tape volumes.
>
> Use the TSM-server this sequence ?
> If not, how can I configure it ?
>
>
> Thanks in advance !
>
> Andreas.

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