As with any backup process that is not aware of the underlying file 
systems, FDR could back up files in an inconsistent state (i.e. files are 
changing as they are being backed up, usually: not committed to DASD).

Thus, ensure that the target backup volumes are not being used by any 
system when being backed up.  Best practice: shutdown the z/VM guest 
servers and even the z/VM system (since presumably it is being moved, too) 
during the backup. 

FDR can copy directly from disk to disk (presuming that the architecture 
is the same).  Saves tape mounts and downtime.

FDR has the capability to re-label the "from" volume when the copy has 
completed.  Handy to prevent accidental usage when you are IPLing from the 
new DASD.  All the data is on the old volumes, only the label has been 
changed to protect the innocent.  ;-)

Mike Walter 
Hewitt Associates 
Any opinions expressed herein are mine alone and do not necessarily 
represent the opinions or policies of Hewitt Associates.



"Juarez, David T. (AITC)" <[EMAIL PROTECTED]> 

Sent by: "The IBM z/VM Operating System" <[email protected]>
12/09/2008 09:49 AM
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"The IBM z/VM Operating System" <[email protected]>



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Subject
Moving DASD to a new volume range






Hi there z/VM gurus. We are going to move our z/VM 5.3 and Red Hat Linux 
5.2 DASD volumes from address range 7xxx to 8xxx using FDR full volume 
physical backups/restores and keep the same volume labels.  We will modify 
the system config file to vary online the 8xxx range and IPL off the new 
8xxx RES pack. Is there anything else we need to change or be aware of?  
We are using EMC DASD but I don?t think that matters.  FDR runs on z/OS. 
 Thanks! 
 
David Juárez
Department of Veterans Affairs
z/OS and z/VM Systems Programmer
 




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