I don't know what you mean by tape degradation, but software
encryption does have a significant effect.

If you use the NetBackup encryption option, your tape drives will not
compress the encrypted data.  max speed of the backup will be limited
by the CPU speed, not IO speed.  You can also use the NetBackup
compression option, but that slows the whole operation down even more.
a lot more.

If you use a Decru device or drive level compression, it will do
compression at the same time.

In either situation, key management is a big deal.

Austin


On 9/5/07, Cruice, Daniel (US - Glen Mills) <dcruice AT deloitte DOT com> wrote:
>
>
>
>
>
> Looking for some information regarding tape encryption, anyone out there
> using it?  And if so what kind of tape degradation did you experience.  We
> are being asked to implement it and we are just trying to figure out what we
> are going to need.  Our environment is mixed with Windows and UNIX, all of
> our NBU servers are Windows (Master and Media) with a 20 drive LTO3 Library,
> over 900 clients.  About 90% of our environment is running 6.0 MP4 and soon
> will be rolling out 6.5 w/ MP1.  Any gotchas we need to be aware of.
>
>
>
> Thanks
>
> Dan
>
>
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>
>
>
>
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