If the intent is to re-use the same set of tapes, you'd could either set
the retention period to something less than 3 weeks (e.g. 19 days) or
manually expire the images on the tapes prior starting the next backup.
The later could be done using a combination of the 'bpexpdate' and
'vmquery' utilities.

Something like,

      bpexpdate -m $media_id -d 0 -force
      vmquery -deassignbyid $media_id 2 0

This could probably be scripted with a bpstart_notify.<policy_name> script
if you knew which tapes you would be using.

-John

On 03/18/2011 12:14 PM, Harpreet SINGH wrote:
> 
> Dear All,
> 
> Please advise.. Our some of the big size backup's taking 18 hours to
> complete and these backups spans to 4-5 Tapes.
> 
> The issue is all the Backup (4-5) Tapes have different expiration time.
> Assume my backup start at 01:00 am and it takes 18 hours to complete. I
> have the backup retention policy to 3 weeks.
> Once the tapes are back after 3 weeks I can see the data expiration is as
> of 18:00 hours... etc... where my backup will start at 01:00 am  and it
> will fail with error 96.
> 
> Please advise how I can expire the backup images before the next  Backup
> Start Time..
> 
> With Warm Regards
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> Harpreet Singh Chana
> 
> Phone  :     (O) 6895 - 4326
> Fax       :     (O) 6895 - 4991
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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