Not to speak for Mike, but as Mike said in his previous email the ability to
have generic rules protect individual datasets in place of discrete rules is
fine as long as you have a tape management system (any tape management
system). To take that one step further however, I would also say as long as
you have a tape management system AND have rules in place to prevent
un-authorized bypassing of the tape management system you are nearly as safe
with generic rules as with discrete profiles. And all tape management
systems (CA's, IBM's, BMC's and ASG's) have some ability to protect who can
use EXPDT=98000 to bypass the tape management system (that is one thing we
all do agree on). So, if you are controlling who can or cannot bypass the
tape management system; then unless you have given that user the ability to
bypass the tape management system the trick of changing the HLQ will not
work (the tape management system would reject the tape since the DSN in the
JCL does not match its full-44-character dsname).

Russell Witt
CA-1 Level-2 Support Manager

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED]
Behalf Of Robert S. Hansel (RSH)
Sent: Saturday, March 11, 2006 2:57 PM
To: [email protected]
Subject: Re: discrete profiles for tape protection.


Mike,

Your comments about running without TAPEVOL and/or TVTOC raises the
following issue. It is my understanding that with RMM the only way to
protect against unauthorized access to a tape dataset by taking
inappropriate advantage of tape label containing just the last 17 characters
of the dsname (e.g., opening PAY.PROD.MASTER.FILE by calling it
MYID.PROD.MASTER.FILE) is by implementing RACF TAPEVOL profiles with TVTOC
and setting RMM option TPRACF to either (P) or (A). This causes RACF to keep
track of the full dsnames on a given tape and guard against someone
falsifying the name. Does RMM have other features or functionality that
prevents misnaming tape datasets without involving TAPEVOL TVTOCs? Is yes,
can you help me find the reference where it is described?

Thanks, Bob

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