DRM and delete volhist

[vdrdr]

I know this topic has been discussed many times but I am not sure I completely understand.

I am going to implement DRM and these are the settings I think could work:
full db backup to scratch tape every day
snapshot db backup to disk (file class) every day also
drmdbbackupexpiry 2
reusedelay on copy pools 2

Now, full DBBackups would be included with DRMedia and would be taken offsite regulary. They would be handled by DRM.
However I don't want DBSnapshots to be handled by DRM (Process FILE Device Type?: NO) and I want to keep only the latest DBS by using delete volhist t=dbs.
Under these circumstances, am I "allowed" to use delete volhist only for DBSnapshots.
Will I loose track of volumes because of that?
Thank you.

 

[erwanns]

Hi,

You're right !

Let DRM and Expire Inventory handling full DBBackups, and don't use delete volhist with t=dbb parameter. But run daily a delete volhist command with t=dbs parameter.

Please note that I'll probably prefer using the DBS with DRM and not the DBB.

 

[vdrdr]

Thanks!
That cleared things up.
I'm not sure why would you prefer DBS over DBB with DRM. Could you briefly explain, please?