NTBackup Free Space on Tape

[dougcranston]

I have searched Tek-Tips, MS documentation and the web, and not found an answer a question on how to determine how much free space exists on a tape in the drive.

I am forced into using NTBackup due to budgetary reasons.

So what I have is a working script that will perform Differential backups but I would really like to have a script based solution to check to see how much free space exists on a tape in a drive.

Does anyone have any ideas or suggestions?

Thanks in advance.

DougC

 

[haemphyst]

I know of no way, other than subtracting the exisitng backup job size (which should be given to you) from the total size of the tape. This method will only give you the amount of native space, and not compressed space - i.e. how much MORE IN TOTAL can I put on this tape? I know Veritas will tell you how much space is USED, but not how much REMAINS. The biggest reason for this, I would think, is because the native size of the data space on the tape will not match the compressed size of the data space on the tape, so you could never really know for certain how much virtual (compressed) vs actual (native) space remains.

e-mail me at ddraper at igalaxy dot net