Re: [ADSM-L] Moving nodes to a new policy
2015-06-06 05:04:08
Paul,
Not sure what your retention looks like,
but if you move the nodes to a different domain with a different retention
(smaller), then the data will get bound to the new policy after a backup
is performed and the new data retention will kick in at that time. I believe
that your understanding of version deleted (verd) is off. The verde is
only used once a file has been deleted from the client.
Example: a file has been deleted from
the client node, AND an incremental backup is run, the TSM client will
inform the TSM server of this fact. This results in following actions on
the TSM server:
a) The TSM server deactivates
the active version of the file and no more versions are inserted into the
database.
b) The VERDELETED parameter is
used to limit the number of versions held by the TSM Server. Any number
of versions in excess of the VERDELETED
setting will be
marked for immediate expiration and purged (via the same mechanism as described
above in Case A).
c) All the inactive versions
are tracked in the Expiring.Objects table. Each version of the file is
purged in accordance to the settings of the RETEXTRA
parameter, except
for the LAST version. Its deactivation date will be evaluated against the
RETONLY parameter of the management class setting. This is a
safety feature
of TSM to allow the last version (most recent) to be recoverable for an
extended period of time, should a user wish.
So a setting of 30 30 30 365 would keep
30 active versions (1 active 29 inactive) if a file is deleted TSM would
keep 30 inactive versions and based in the deactivate date would keep each
version, except the last, for 30 days. The last inactive version would
be kept for 365 days, the 365 days started the day it was deactivated,
so actually that file would be around for an additional 335 days when it
became the only version of the file still on the TSM Server.
Best Regards,
_________________________________________________________
email: ron.delaware AT us.ibm DOT com
From:
Paul_Dudley <pdudley AT ANL.COM DOT AU>
To:
ADSM-L AT VM.MARIST DOT EDU
Date:
06/04/15 17:35
Subject:
[ADSM-L] Moving
nodes to a new policy
Sent by:
"ADSM:
Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
If I have nodes that are currently under a policy
that keeps 5 backup versions, can I move them to another policy which keeps
only 2 backup versions?
Will TSM then start expiring all the older backup versions of files which
are no longer needed?
We have two nodes which are taking up a lot of backup space in TSM and
want to reduce this.
Thanks & Regards
Paul Dudley
pdudley AT anl.com DOT au
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