On Thu, 31 Aug 2006 11:27:53 -0400, Alan Altmark wrote:
>They drives encrypt/decrypt data *in the drive itself tape speed*. The
>performance penalty of host-based encryption is no longer necessary.
Hmmm... not quite. From the U.S. announcement materials:
"Note: With encryption enabled, the access time to data on the tape drive
will increase. Also, the tape drive unload time will increase. This is due
to the time needed to retrieve, read, and write the encryption key."
It appears that there *is* a performance penalty, although hopefully not as
severe as today (when the general processors have to do the work). Too bad
that wasn't offloaded to zIIPs/zAAPs/zEEPs ("Enhanced Encryption
Processor" - I just made that up) to generalize the support somehow.
--
Tom Schmidt
Madison, WI
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