Hi Tom, 

Thanks for the reply. 
So it works with Metro Mirror (synchronous) irrespective of the distance of the 
DR site, which in our case is about 22km.



-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Revard, Thomas (T)
Sent: 22 October 2019 12:45 PM
To: [email protected]
Subject: Re: zHyperlink and Synchronous replication

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Theo,

zHyperlink write functionality should work in a Metro Mirror environment with 
appropriate maintenance, but you also need to activate zHyperwrite to have your 
DB2 log writes done simultaneously to the primary and secondary volumes. We 
have been told by IBM that zHyperlink write functionality will not work in a 
Metro Global Mirror environment.  There is no issue with zHyperlink read 
functionality and we are seeing response times consistent with IBM 
documentation in the neighborhood of 25 microseconds.

Regards,

Tom

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Buckton, T. (Theo)
Sent: Tuesday, October 22, 2019 5:20 AM
To: [email protected]
Subject: zHyperlink and Synchronous replication

This email originated from outside of the organization.


Hi,

How does synchronous replication of DB2 data affect the effectiveness of 
zHyperlink? The storage array and the mainframe is within the 150m distance, 
however our DR site is way beyond this distance.

Regards
Theo
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