I did some tests backing up/restoring a 4GB file with an AIX TSM client
and TSM server and found the following:

Backup to diskpool unencrypted: 400 seconds
Backup to diskpool encrypted: 600 seconds

Restore unencrypted file from tape: 400 seconds
Restore encrypted file from tape: 600 seconds.

IBM was not able to answer whether or not these results were acceptable
overhead for encryption since results are very dependent on
configuration.   Use this as an example.

-----Original Message-----
> Does encryption slow your backup down? Is there a large impact with 
> using encryption?

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