Backup Exec 2010 R2 Backup to Disk Settings

I presently have Backup to Disk configured with the following settings:

Maximum Backup to disk files set at 600GB
Allocate Maximum Size for backup-to-disk files disabled
Maximum number of backup sets per backup-to-disk file is 100
Low disk space threshold disabled
concurrent operations allowed: 1

The drive I am backing up to has 800GB usable space...

I have 2, B2D files one with total capacticty of 464GB, the other with 456GB - presently used is 455GB and 365GB.  I'm getting disk space alerts for these jobs, as when the B2D get full, the disk space gets low to a few hundred MB - but the jobs are completing.

I don't believe the B2D settings are set correctly, and would like them set to only use 800GB of disk space, so they dont drop my disk space size to only a few hundred MB and potentially fail future backups.

The size of my backups jobs is about 230GB for differentials, and 654GB for full backups.  Differentials are run Mon-Thurs and Fulls on Fri.

Can i Just change dthe maximum size for backup to disk files to 400GB each? Also how will it prevent from having a 3rd B2D file created? I recently acquired this environment, so not sure why there are 2 B2D files to begin with with such a high setting.

Thanks.
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fireguy1125Asked:
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Rodney BarnhardtConnect With a Mentor Server AdministratorCommented:
The only way I know is to set the number of backup sets. If you right click on the B2D folder, you can set the number of backup sets. You will have to do the math to figure out exactly how backup sets you can keep. However, to do this, you would probably have to separate out the full backups from the differentials. So, your differentials are 230G. If you keep 5 backup sets, that would be 1.1TB.
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