I refrained from answering earlier because we're an all-RACF shop. However, I 
can comment the extent of (RACF) database sharing. We have a bronze-plex that 
resulted from bolting together two previously independent parallel sysplexes, 
one with two members and another with only one. These sysplexes were 
independent for business reasons. RACF databases could not be combined because 
a given userid or dataset might be defined in both with different access 
levels. 

The result is a single parallel sysplex in which the two like members share 
everything, while the third shares only enough to qualify for sysplex 
licensing. (An IBM-invented game.) This arrangement is far from ideal, but the 
two birds-of-a-feather share RACF while the odd man out has his own non-shared 
database. It's been working OK for several years. 

.
.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler 
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
jo.skip.robin...@sce.com

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Elardus Engelbrecht
Sent: Wednesday, July 29, 2015 12:07 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Different Security Products in a Sysplex

Givens, Dennis W. wrote:

>I have been asked if both RACF and Top Secret can run on different LPARs in 
>the same parallel sysplex. I recall that NO that is not permitted but am 
>having trouble finding where it is written.

It could be possible as long each database of each security system is *NOT* 
shared by more than one LPAR.

You can only share ONE RACF DB in a Sysplex. Other LPARs can also share the 
same database or use their own *NON-SHARED* RACF database. What I wrote in 
previous sentence is *only* about RACF.

I'm not sure how you could use different security products in one Sysplex, I 
also lost my sources [1] about this, but I believe you should setup standards 
for each LPAR and ensure nothing is shared at all - GRS, catalogs, security 
DBs, volsers, etc. 

You may have trouble managing your JES2/3 + HSM + SMS + Tape management 
resources across those LPARs using different security systems and standards as 
enforced by them.

I may be wrong, but I have been in a Sysplex where each LPAR is having own RACF 
DB (only RACF in all LPARs) and that is already a dangerous, but manage-able 
minefield. [2]

In fact - Sysplex is just this - sharing resources across LPARs - RACF or 
TopSecret, JES2/3, HSM, SMS, GRS/MIMS, Catalogs, volsers, etc.

You could post your questions on RACF-L, I certainly know that there are good 
gurus who successfully converted from one security system to RACF. They would 
have a lot to tell you what to do...

Good luck.

Groete / Greetings
Elardus Engelbrecht

[1] - Google does not help me here - too much false search results...

[2] - I eventually got standards the same across all those LPARs and then have 
one after the other LPARs move over to one *shared* RACF database in the 
Sysplex. Eventually all unshared databases were deleted.

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