Jake

Issue UCBSCAN and get the device class extension (DCE) and then check for both 
the following :

UCBTBYT3/4 = x'200F' and DCEOBRDT = x'3E'

Rob

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Jake Anderson
Sent: Wednesday, July 19, 2017 12:31 PM
To: [email protected]
Subject: Re: Identify EAV volume

I was trying to understand if there is any kind of assembler program that can 
query on device report saying that it is EAV volume

On 19-Jul-2017 3:38 PM, "Lizette Koehler" <[email protected]> wrote:

> What problem are you trying to solve?
>
> most shops use a stand set of definitions for dasd which comes with
> specific setting for size of volume.
>
> So if you see it is a 3390 Mod3 you know it will be 3339 cylinders.
> Though you could make  it different, this is what most will recognize
> as how many cylinders are on a Mod3.
>
> With EAV the type of volume definition is slightly different and IBM
> has suggested 3390 ModA (3390-A) for EAV.
>
> Then you would specify how large it is (typically larger than a Mod54)
>
> You also need to see that the Mod-A uses a different sizing - it can
> be up to 255TB in size for one volume
>
> If you do an internet search on
>
> IBM 3390-A EAV
>
> You might find this Share presentation that might help
>
> SHARE 9941 Planning for EAV Migration
>
> Or this
>
> IBM Redbooks | DFSMS V1.10 and EAV Technical Guide
>
> Or this entry
>
> Extended address volumes for CKD - IBM
>
>
> They (and other presentations and links) should help you understand
> the EAV
>
> Lizette
>
>
> > -----Original Message-----
> > From: IBM Mainframe Discussion List
> > [mailto:[email protected]] On Behalf Of Jake Anderson
> > Sent: Wednesday, July 19, 2017 1:57 AM
> > To: [email protected]
> > Subject: Identify EAV volume
> >
> > Hi
> >
> > Is there any command to identify if a particular volume series
> > belongs
> to EAV
> > ?
> >
> > Any commands or macro which can help ?
> >
> > Regards
> > Jake
> >
>
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