>>You are also going to lose the ability to share these as well:
- ECS
- GRS
- WLM
- ZFS
- There is a number of volumes that is shared between the Development and
Production environment
>> The caveat on this is that you can't reliably share these outside of GRS.
>> Many do it to allow "sysprog access" to move stuff around, but I wouldn’t
>> actively share volumes without GRS. Certainly not PDSE datasets, they are
>> guaranteed to get corrupted.
Then you go on to say:
The following components are not shared between Development and Production
environments
- CATALOG
- Each environment has its own Master Catalog
- There is some User Catalogs that are being shared between the
Development and Production environment << really shouldn’t do this without GRS
- JES2
- DFSMS
- DFSMShsm
- DFSMSrmm
- VSAM/RLS
The Control data set are shared << Cant share this outside of sysplex
The CF lock structure is shared <<Cant share this outside of sysplex
The CF cache structures are unique
- RACF
- TCP/IP
- VTAM
Lastly, you don’t mention it, but your comments lead me to believe that you
might be expecting to share the same CF lpars. You need separate CF's for DEV
vs PROD as well.
_________________________________________________________________
Dave Jousma
Assistant Vice President, Mainframe Engineering
david.jou...@53.com
1830 East Paris, Grand Rapids, MI 49546 MD RSCB2H
p 616.653.8429
f 616.653.2717
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Jaco Kruger
Sent: Tuesday, February 17, 2015 3:58 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Parallel Sysplex split
Good morning,
Currently, the Production Parallel Sysplex environment consist of all the
Development and Production LPARs, which is distributed across 2 mainframes.
Each mainframe contains a Production Coupling Facility(CF) LPAR.
We will remove the Development LPARs from the Production Sysplex and add it to
a new Development Sysplex.
The following components are shared between Development and Production
environments
- DASD
- All the z/OS volumes are accessible from all LPARs. Only volumes
pertaining to an specific environment is ONLINE,
e.g. only Production related volumes are ONLINE in the Production
environment.
- There is a number of volumes that is shared between the Development
and Production environment
- ECS
- GRS
- I/O gen
- WLM
- ZFS
The following components are not shared between Development and Production
environments
- CATALOG
- Each environment has its own Master Catalog
- There is some User Catalogs that are being shared between the
Development and Production environment
- JES2
- DFSMS
- DFSMShsm
- DFSMSrmm
- VSAM/RLS
The Control data set are shared
The CF lock structure is shared
The CF cache structures are unique
- RACF
- TCP/IP
- VTAM
We have reviewed the different components, performed the required cleanups and
setup documentation with proposed actions.
We do however have some questions
- What are the gotchas that we need to look out for ?
- What will be the best approach to initialize the VSAM/RLS environment in
the new Development Sysplex
environment ?
- Once the Development LPARs have been shut down, do we need to perform
any task on the Production Sysplex
environment to ensure that the IPL of the Development environment into
the Development Sysplex will not cause
any problems for the Production Sysplex ?
- We found little information regarding the split of a Parallel Sysplex.
We used the redbook Merging Systems into a
Sysplex as a reference, although it does not contain information
regarding the split of a Sysplex. Is there any
documentation available that has more information ?
Regards
Jaco Kruger
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