On 2015-11-09 09:35 AM, John Drescher wrote: > On Mon, Nov 9, 2015 at 12:26 PM, jstacey <bacula-fo...@backupcentral.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 > Encrypted data is generally not compressible. You need to get the compression happening before the encryption; this can either be done by using software compression as well as software encryption in Bacula or by getting the LTO4 features working for you.
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