On Wed, 3 Oct 2012 07:55:44 -0500, McKown, John wrote:

>And, just to be complete, you are assuming that your customers will be using 
>IBM standard tape labels. Granted, who doesn't? But it is an assumption. Also, 
>remember that in many shops, use of BLP to read the tape labels can be 
>protected via the tape management system, or even with RACF now-a-days. Does 
>not apply if you use EXCP to REW the tape, of course.
> 
Inconsistency.  Either the REW CCW or EXCP itself should be likewise
RACF protected or protected by the tape management system.  The
unprivileged user should have no opportunity to overwrite labels of
library tapes.

I suppose a virtual tape might have a virtual label, and any attempt
to invalidate the label should fail or be ineffective.

-- gil

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