We have several sysplexes around the enterprise. Some resources are 'sharable', 
some not. 

A. Can we use a unique TWS controller to Schedule jobs on two? 
I don't know whether you can, but you don't need to. We have one 'TWS 
controller' for the whole enterprise; it controls everything. From the LPAR 
where we run the controller, most jobs get submitted to run on other 
systems/nodes. We also submit jobs to midrange (Unix).  

B. Can we use RACF RRSF to propagate our pwd over IP between them?
We have used RRSF between sysplexes for decades. We happen to use APPC for the 
purpose, but I don't see why IP would not work. Just be aware the AFAIK *all* 
RACF values will be propagated, not just passwords. I would seriously question 
whether you want all userids from production to be replicated on dev. That's a 
business decision, not a technical one.

C. Can we share dasd (write one side at a time, not pdse) with GRS (not MIM)?
Absolutely not. Don't even consider it. You will go down in flames.


.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler 
SHARE MVS Program Co-Manager
323-715-0595 Mobile
626-543-6132 Office ⇐=== NEW
[email protected]


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Scott Fagen
Sent: Tuesday, March 13, 2018 7:51 AM
To: [email protected]
Subject: (External):Sharing across two sysplex

Caught this on the newsgroup, not the LISTSERV:

------

[email protected]

Hello. We are in the process to separate our current SYSPLEX in two : 
1. for the production
2. for the dev/qualifications. 

A. Can we use an unique TWS controller to Schedule jobs on two ? 
B. Can we use RACF RRSF to propagate our pwd over IP between them ? 
C. Can we share dasd (write one side at a time, not pdse) with GRS (not MIM) ? 

Many Thank's 

-----

Answers:
A.  Yes, but there are recovery considerations.  Have a look at 
http://ibmsystemsmag.com/mainframe/administrator/tivoli/all-schedules,-all-the-time/
B.  Yes, but there are operational differences.  Have a look at 
http://www.redbooks.ibm.com/abstracts/sg248041.html?Open
C.  That's a nuanced question.  Can you share DASD between sysplexes?  Sure.  
Can you count on the data on the DASD being maintained with integrity with only 
GRS, probably not.  Without something like MIM, you will need to use some other 
form of serialization that spans the sysplexes.  The only thing I'm aware of is 
to use hardware RESERVE/RELEASE, which is fraught with its own set of 
management issues.  You can search this group for probably dozens of 
discussions on the advantages/disadvantages of a hardware vs. software solution.

Do you have a need to share tapes and tape drives?  Another set of things to 
think about

Scott Fagen
CPO - 21st Century Software


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