You can require a backup before allowing migration to prevent this.
Might increase utilization of primary volumes with datasets needing a
backup.

On Wed, Oct 10, 2012 at 7:37 AM, Staller, Allan <[email protected]> wrote:
> If you wish to change the default behavior of DFHSM to *NOT* require a backup 
> before deletion, use the DBU patch described in my previous post..
>
> <snip>
> If there is no BCDS information for a dataset, then as far as HSM is 
> concerned the dataset has no backup.  Unless you patch HSM, it will not 
> delete a dataset that has no backup.
>
> Determining how this occurred may be more trouble than it is worth if the 
> datasets were migrated long ago.  You could start tracking newly migrated 
> datasets to determine if the situation repeats and possibly catch it while 
> there is enough data to correct the cause.
>
> </snip>
>
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-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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