On Oct 18, 2011, at 4:37 AM, Alex Crow wrote:

> Hi,
> 
> We have set up a backup server that uses encryption in the File Daemon. 
> However we find it is really slow, in fact we are only getting about 
> 80Mbps (megabits, not -bytes) throughput while running 4 backup threads. 
> This is backing up from an NFS-connected disk backup host that can 
> easily saturate a 1Gbps link when I just dd the contents of a large file 
> to /dev/null on the backup server. It's actually taking us nearly a week 
> now to do a fortnightly backup of 16TB.
> 
> I've noticed that crypto cards from Exar are supported by OpenSSL and 
> seen to provide support for AES-CBC. From a previous message on this list:
> 
> http://adsm.org/lists/html/Bacula-users/2010-04/msg00232.html
> 
> it seems someone looked at patching to support offload, however I cannot 
> find any outcome from this.
> 
> If it is supported in any way, I'd be happy to know.

As far as I know, it is not supported.

> If not, what would 
> be the best way about getting it implemented?

I have no idea.

-- 
Dan Langille - http://langille.org


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