I have not been able to define an EDEV larger than 1TB without getting errors.  
However, I have not tired it with z/VM 7.2 yet.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601

________________________________
From: Linux on 390 Port <[email protected]> on behalf of Neale Ferguson 
<[email protected]>
Sent: Tuesday, April 5, 2022 6:01 PM
To: [email protected] <[email protected]>
Subject: Re: Moving LUNs using z/VM

Is there a maximum edev size?



You can copy the LUNs with DDR, but you have to first define an EDEVICE for 
them.

Regards,
Alan

Alan Altmark
Senior Managing z/VM Consultant
IBM Systems Lab Services
1 607 321 7556 Mobile
[email protected]

> -----Original Message-----
> From: Linux on 390 Port <[email protected]> On Behalf Of
> Martha McConaghy
> Sent: Tuesday, April 5, 2022 5:20 PM
> To: [email protected]
> Subject: [EXTERNAL] [LINUX-390] Moving LUNs using z/VM
>
> I have a few RHEL servers that run on z/VM but boot off of a direct attached
> SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I need to
> move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way that I
> could use VM to copy these LUNs to the new storage?   I was looking at DDR,
> but wasn't sure if the FB-512 type would work for these.  They aren't CMS
> format disks, obviously, so that isn't an option.  I'm trying to avoid having 
> to
> attach them to a Linux server to do the work, but will if that is the only
> option.  Since these are boot volumes, I have to copy the boot partition and
> boot record, not just the filesystems.  So, a physical copy would be the best.
>
> Any ideas?

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