On Mon, Nov 9, 2015 at 12:26 PM, jstacey <bacula-forum AT backupcentral DOT 
com> wrote:
> I recently enabled encryption in my bacula-fd.conf with these entries:
>
>   PKI Signatures = Yes
>   PKI Encryption = Yes
>   PKI Keypair = "/etc/bacula/client.pem"
>   PKI Master Key = "/etc/bacula/master.cert"
>
> The encryption works but now my LTO4 tapes can only store around 812MB 
> instead of the usual 1.2 -> 1.4 TB  Is this normal?  I might enable gzip 
> software compression but this is going to take a chunk out of my CPU. I read 
> that it is also possible to enable hardware encryption on the drive. Maybe 
> this method would allow me to keep using hardware compression? Thanks
>


Perhaps the software encryption is not very compressible. Remember
some encryption methods make your data look more random. And random
data does not compress at all.

John

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