[Bacula-users] Possibility of parallelising encryption?

[Richard S. <ri...@sa...>]

I have a 2.8GHz Core i7 machine backing up uncompressable data spooled 
onto an 8 drive RAID5, to LTO-4 tape.

Our requirements now dictate that data encryption must be used on the 
tapes and having configured this, it seems that one core is saturated 
encrypting the data and the result is that tape write speed is now about 
50% slower than when encryption is not used.

Would it be possible to optimise this task by perhaps reading data in 
"chunks", which in turn can be encrypted by a core each, before being 
recombined and written out to tape?

I'd use the hardware encryption (which presumably has no performance 
impact), that is an option on this autochanger, except they want $2500 
for it...

Regards,

Richard