That's one option. Assuming the availability of resources and management
buy-in, there's also
Add CTCA (real or virtual) and define GRS ring.
Add CF LPAR, put everything in one sysplex and define GRS star.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
עַם יִשְׂרָאֵל חַי
נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
________________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of
Allan Staller <[email protected]>
Sent: Thursday, June 20, 2024 11:52 AM
To: [email protected]
Subject: Re: GRS in MONOPLEX without physical CTCs ?
Classification: Confidential
In that case, for safety, each LPAR should have a cop of the software (unless
yu can guarantee read-only.
Otherwise a homegrown serialization mechanism, or CA-MIM would be required
-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of
MANCINI Frédéric (80)
Sent: Thursday, June 20, 2024 9:03 AM
To: [email protected]
Subject: Re: GRS in MONOPLEX without physical CTCs ?
[CAUTION: This Email is from outside the Organization. Unless you trust the
sender, Don’t click links or open attachments as it may be a Phishing email,
which can steal your Information and compromise your Computer.]
Several lpars, each configured as a MONOPLEX, with GRS=NONE, will use the
software.
I understand that we would need either physical CTCs or a "coupling facility
lock structure". Does this have to be a separate physical component ?
------------------------------------------------------------------------
*De :* Paul Feller [mailto:[email protected]]
*Envoyé :* jeudi 20 juin 2024 à 15:42
*Pour :* [email protected]
*Objet :* GRS in MONOPLEX without physical CTCs ?
> I pasted below information from the “MVS Planning: Global Resource
> Serialization” manual for z/OS 2.5. So based on what the manual says you
> need to have CTCs that GRS will manage. Just out of curiosity is there going
> to be more then one lpar using this software?
>
>
> How global resource serialization works.
> Depending on the level of z/OS and XCF environment the systems are running
> in, sysplex or non-sysplex, a global resource serialization complex consists
> of one or more systems:
>
> • Connected to each other in a ring configuration through:
> – XCF signaling paths, through CTC or coupling facility
> – Global resource serialization managed channel-to-channel (CTC) adapter
> - Systems in the same sysplex must use XCF signaling
> - Non-sysplex or monplex systems must use GRS-managed CTCs to
> communicate
>
> • Connected to each other in a star configuration through:
> – XCF signaling paths, through CTC or coupling facility
> – A GRS coupling facility lock structure
>
>
> Paul
>
> -----Original Message-----
> From: IBM Mainframe Discussion List <[email protected]> On
> Behalf Of Mark Jacobs
> Sent: Thursday, June 20, 2024 8:06 AM
> To: [email protected]
> Subject: Re: GRS in MONOPLEX without physical CTCs ?
>
> Being in a monoplex I assume no.
>
> Mark Jacobs
>
> Sent from ProtonMail, Swiss-based encrypted email.
>
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>
> On Thursday, June 20th, 2024 at 9:04 AM, Seymour J Metz <[email protected]>
> wrote:
>
>> Do you have a CF LPAR?
>>
>> --
>> Shmuel (Seymour J.) Metz
>> https://secure-web.cisco.com/1QmtAb3IirADz4J6T5GA28YIs4V6YhVrSKpNFFnVNgqa9-Lo5gFZsOIM3iGbV_K7Dn024lCNkiPP_wofdLIZwN26ueMya9yLdeUrU913kRCJcsDMuJlwYxxBlyyhXVE7SaQbc44EzyRNZR2adYwSKOpG18zhsbGHXwtqtkwfGIqJ_g3_U6InFpPnZYV2yYWd7YFI7d4OOSTshxpElZaNvaoJ2EKKMaCmmGifecfttcG2TAt51h_4Vc9gEFqMpajH4Kee3ZLmzwf0zdSdTuLAks-9gB16cnBwXfN0HCTw0iSIqVD83Xx1LgAKIn0tKZ6AnVFk3r13YivCbAp3f4FnK9Gx-c6BVPyoSdfsZPft15nN3AYY4zE6tEuHPnZjPvn0qHDfcfKo0unD3bn4dxV1WjjPgmyAde3e5XeVMGlxBhy8/https%3A%2F%2Fapc01.safelinks.protection.outlook.com%2F%3Furl%3Dhttp%253A%252F%252Fmaso
>> n.gmu.edu%2F~smetz3&data=05%7C02%7Callan.staller%40hcltech.com%7C6668
>> a87cf35c48aa054308dc9131caae%7C189de737c93a4f5a8b686f4ca9941912%7C0%7
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>> עַם יִשְׂרָאֵל חַי
>> נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
>>
>> ________________________________________
>> From: IBM Mainframe Discussion List [email protected] on
>> behalf of MANCINI Frédéric (80)
>> [email protected]
>>
>> Sent: Thursday, June 20, 2024 8:29 AM
>> To: [email protected]
>> Subject: GRS in MONOPLEX without physical CTCs ?
>>
>> Hello,
>>
>> We recently acquired TACM (Tivoli Adanced Catalog Management).
>>
>> To use its "MERGECAT WHILE-OPEN" functionality, we would have to
>> properly configure GRS (we presently have GRS=NONE in IEASYSxx).
>>
>> I set GRS=START and GRSRNL=00 in IEASYSxx, but when I IPL the system
>> I get the following message :
>>
>> ISG157D SYSTEM IN MONOPLEX MODE WITH NO GRS CTC DEFINITIONS. RELOAD
>> THE SYSTEM OR REPLY NONE TO CONTINUE THE IPL.
>>
>> Is it possible to configure GRS on a MONOPLEX without physical CTCs ?
>>
>> Regards,
>>
>> Frederic Mancini
>>
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