Craig Ringer wrote:

Snip interesting crypto discussion...

>> 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...
>
> Probably because it has a custom ASIC for the crypto algorithm in use to
> allow it to go fast enough.

Well, I suspect the ASIC is already onboard - the $2500 seems to get you 
a couple of USB keys to enable it (HP MSL series libraries).

> The trouble with this is that if your tape drive/changer dies, you
> generally need another one with the same hardware crypto to restore.
> This is a really, really ugly situation for disaster recovery.

As long as you obtain another MSL library and use one of your original 
USB keys, you're back in business, but I take your point.

Regards,

Richard

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