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DAT 72 tape drive - Do not get compression with NT Backup

 
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DAT 72 tape drive - Do not get compression with NT Backup

I am having dificulties with a number of HP DAT drives that do not appear to compress data if they are being written to by M/S NTBackup.

I am having the problem with DDS4 and DDS72 drives. Only the native amount of data is going onto the drive. The HC flag is ON.

Storage works diagnostics say that the drives will compress.

Only about 50% of the data would be compressable, but I am not seeing any conpression.

Any ideas?
3 REPLIES 3
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Re: DAT 72 tape drive - Do not get compression with NT Backup

I have just tried with Storage works - Data protector and also only get 34GB on a tape.
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New Member

Re: DAT 72 tape drive - Do not get compression with NT Backup

Anybody got any ideas on this. Is it true MS NTbackup does not support compression? I also get no compression.

Thanks,
Robin
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Trusted Contributor

Re: DAT 72 tape drive - Do not get compression with NT Backup

Hi.
Anybody has solved this issue?
I am in the same situation and I have tested the environment with NTbackup and Data Protector Express and with another type of drives I can get compression.