Tape Drive not backing up to its full capacity.

[Dan_Calaguas]

It seems that we could not get a full 20GB backup on this tape drive. It's asking for a second tape as soon as we hit 15GB.

The drive is capable of storaging 20Gb's native and 40Gb's compressed on each cartridge. The tape drive unit is an Internal DDS Type 4.

[Ken_Putnam]

Which driver are you using? Veritas or mfg? Have you tried switching?

If you shut down all BackupExec services, does NTBackuip write 20GB to the tapes?

If not, you may have a faulty drive.

[Madhuri_Shenoy]

Hi,

What form of compression are you using? Hardware or software?

If hardware, you could try upgrading the firmware of the device. Please note that if hardware compression is used, Backup Exec just commands the device to use hardware compression. The rest is done by the device itself. Hence the need to upgrade drivers and the firmware to the latest version. The following Technotes might prove useful to you:

http://seer.support.veritas.com/docs/199542.htm
http://seer.support.veritas.com/docs/249090.htm

If you are using software compression, please check on the amount of data that is being backed up. Split the jobs and then verify the result.


I hope this helps!

Thanks!!


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