We currently encrypt all our offsite tapes.  Mgmt wants to me create a single 
unencrypted archive tape to be stored offsite long term for litigation reasons. 
 

My question is:  If I turn off encryption long enough to get some data written 
to this one tape, then turn encryption back on, could I then continue to write 
uncrypted data to this one tape while all other tapes would be encrypted?

IBM is being non-committal saying we should really use new device class, but 
I'd then have to move one tape drive over to new class each time I want to 
write unencrypted.

TSM 5.5.3
AIX 6.1
Tapes are LTO4

Thanks
Dave

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