Oliver,
We have had this problem when a client tries to backup up already
"compressed" files and has the client option "compression on" set in the
dsm.opt.
By compressed files I mean zip or tar files. We have found that the files
start to expand during additional compression and then exceed the size
estimates.
Richard.
==========================================
Technical Services (ADSM) - Dawson House
Int: 33298 Ext: (44) 1925 233298 Mob: 0961 146738
==========================================
On 04 April 2000 10:35, Oliver Janzen [SMTP:OJANZEN AT DE.IBM DOT COM] wrote:
> Hi *SMers,
>
> Maybe anyone has got an idea/solution to the following problem:
> (Server 3.1.2.50 on AIX 4.3.2
> Client 3.1.0.6 on NT 4.0 SP 3)
>
> We´ve a storage pool with caching enabled. This storage pool has
> a PCT_UTIL of 99,9 %, which is normal after a much Backup-cycles,
> since PCT_UTIL includes the cached copies. (Nevertheless, the data
> are migrated each morning.)
>
> When performing incremental backups of our clients some (mainly big)
> files are not backuped because of the following error message:
> ANR0534W Transaction failed for session ...
> <Client_name> - size estimate exceeded and server is unable
> to
> obtain additional space in storage pool <stgpool_name>
>
> The reason is - as I understood - that ADSM frees
> only that amount of space on the disks (deletes cached files)
> what it estimated for the file. If it underestimated the space needed,
> it looks for more free space in the stgpool, but can not free more
> space by deleting cached files.
>
> Does anyone of you know about a solution?
> Is there any option or any fix which optimizes the estimation procedure?
> Or any option to keep a distinct amount of the storage pool real free (not
> used
> with cached files?)
> Maybe setting a retry for the backup of such failed files?
>
> The problem is that the files are really not backed up.
>
>
> Kindly regards, Oliver Janzen.
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