On Monday, 12/11/2006 at 02:12 PST, Judson West 
<[EMAIL PROTECTED]> wrote:
> 2nd somewhat related question, we are paring up both VM and MVS volumes. 
My
> MVS counterpart is doing the MVS volumes (under a z/OS partition), and 
I'm
> doing the VM ones. When I issue the CP Q DASD DETAILS command on a MVS
> volume known to VM, I get the following results:
> 
> q dasd details 400
> 0400  CUTYPE = 3990-EC, DEVTYPE = 3390-0C, VOLSER = DSMP01, CYLS = 10017
> CACHE DETAILS:  CACHE NVS CFW DFW PINNED CONCOPY
> -SUBSYSTEM   Y    Y   Y   -    N       N
> -DEVICE   Y    -   -   Y    N       N
> DEVICE DETAILS: CCA = 00, DDC = 00
> DUPLEX DETAILS: --
> 
> When this volume is queried on MVS, it shows that it is the primary of a
> duplexed pair. Why doesn't VM show this information also?

I believe that "DUPLEX DETAILS" is related to the older 3990 
controller-based Duplex volume support, something different than 
Metro/Global Mirrors.

Alan Altmark
z/VM Development
IBM Endicott

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