This is normal behavior for a VTL. 
If you need to free up VTL space you have to write a script that labels the 
empty tapes.
You can do that ones a wile by labeling all virtual tapes it the scratch pool 
(using GUI or script) or use the appropriate netbackup notify script (there is 
a script that runs when a tape is expired, I do not remember the name)

For puredisk (MSDP or PPDO) things are different. When a backup chunk is not 
used anymore, is not deleted until the  garbage collection process runs. Even 
thaw the space is not freed up to the file system but it is remain reserved for 
later backups. You can see the free space from the netbackup GUI.

Stefanos


>  -------Original Message-------
>  From: Nikos Apostolou <nia AT pronet DOT ms>
>  To: Harpreet Singh Chana <harpreetrajan AT gmail DOT com>, VERITAS-BU AT 
> mailman.eng.auburn DOT edu <VERITAS-BU AT mailman.eng.auburn DOT edu>
>  Subject: Re: [Veritas-bu] 100% disk to disk
>  Sent: Oct 02 '13 10:01
>  
>  Good question
>  
>  
>  In our case where we use DataDomain and VTL drives, when you run the
>  bpexpdate the only thing happens is that the images on tape are marked as
>  expired.
>  
>  The files (or the tape) will not be deleted until a bplabel command is
>  started or the tape is being overwritten.
>  
>  
>  I do not know what happens in case of pure disk backup. The image files is
>  being deleted after bpexpdate command?
>  
>  If someone knows or can try, let us know.
>  
>  
>  Regards,
>  
>  NIKOS APOSTOLOU
>  
>  
>  FROM: veritas-bu-bounces AT mailman.eng.auburn DOT edu
>  [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] ON BEHALF OF 
> Harpreet
>  Singh Chana
>  SENT: Wednesday, October 2, 2013 6:44 AM
>  TO: VERITAS-BU AT mailman.eng.auburn DOT edu
>  SUBJECT: Re: [Veritas-bu] 100% disk to disk
>  
>  
>  Hi All,
>  
>  I have a small question.
>  
>  How to protect the data deletion from disk ? (accidently in case some one
>  run the bpexpdate XXXX_backup_ID command)
>  
>  With Regards
>  
>  Harpreet Singh
>  
>  
>  On Fri, Sep 27, 2013 at 10:15 AM, Harpreet Singh Chana <[LINK:
>  mailto:harpreetrajan AT gmail DOT com] harpreetrajan AT gmail DOT com> wrote:
>  
>  
>  Hi All,
>  
>  
>  I have a small question.
>  
>  
>  How to protect the data deletion from disk ? (accidently in case some one
>  run the bpexpdate XXXX_backup_ID command)
>  
>  
>  With Regards
>  
>  Harpreet Singh
>  
>  
>  On Fri, Sep 27, 2013 at 4:42 AM, rsavage <[LINK:
>  mailto:nbu-forum AT backupcentral DOT com] nbu-forum AT backupcentral DOT 
> com> wrote:
>  
>  We have been disk to disk for over a year now. We send all our data to data
>  domain and replicate to a data domain using the archive tier. We have some
>  longer retentions, 3 year, 5 year and 7 year. No tape of VTL is awesome.
>  
>  +----------------------------------------------------------------------
>  |This was sent by [LINK: mailto:rich.savage AT bcbsne DOT com]
>  rich.savage AT bcbsne DOT com via Backup Central.
>  |Forward SPAM to [LINK: mailto:abuse AT backupcentral DOT com]
>  abuse AT backupcentral DOT com.
>  +----------------------------------------------------------------------
>  
>  
>  _______________________________________________
>  Veritas-bu maillist  -  [LINK: mailto:Veritas-bu AT mailman.eng.auburn DOT 
> edu]
>  Veritas-bu AT mailman.eng.auburn DOT edu
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>  http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>  
>  
>  --
>  *************************
>  With Warm Regards.
>  Harpreet Singh Chana
>  *************************
>  
>  
>  --
>  *************************
>  With Warm Regards.
>  Harpreet Singh Chana
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>  με τον
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