I found the explantaion for a volume pool.  According to the doc : 
A volume pool associates volumes from which data sets migrate with other 
volumes, to aid in the selection of target volumes for recall.
 
 
I checked the VATLIST and these vols are not in it.  Hence the reason for the 
ADDVOL.
 
Thanks to all who helped me out.
 

________________________________
From: "O'Brien, David W. (NIH/CIT) [C]" <[email protected]>
To: [email protected] 
Sent: Wednesday, June 5, 2013 7:09:00 AM
Subject: Re: DFHSM QUESTION - SIGNIFICANCE OF ADDVOL PARM


An attempt to migrate an APF authorized library will result in the following:

ARC1299I rc=14 where

14        The data set is an authorized program facility (APF) authorized
          library.                                                      

Unless of course the migration is running on an LPAR where said library is not 
APF authorized.

-----Original Message-----
From: Mike Schwab [mailto:[email protected]] 
Sent: Tuesday, June 04, 2013 5:03 PM
To: [email protected]
Subject: Re: DFHSM QUESTION - SIGNIFICANCE OF ADDVOL PARM

http://publib.boulder.ibm.com/infocenter/zos/v1r11/index.jsp?topic=/com.ibm.zos.r11.arcf000/hr1003.htm
Datasets migrated from a volume in the pool are recalled to any volume in the 
pool.
If a dataset is APF authorized for a particular volume, migrating and recalling 
to another volume would make it not authorized.

ADDVOL volser PRIMARY is similar to the VATLST Public / Storage setting, but 
only for HSM.

On Tue, Jun 4, 2013 at 12:37 PM, Staller, Allan <[email protected]> wrote:
> The addvol command is used to define non-SMS managed volumes to DFHSM. SMS 
> managed volumes are defined in the MGMTCLAS/STORGRP ACS constructs.
>
> Deciphering:
> ADDVOL SYS009 PRIMARY(NOAM AREC NOAB NOAD MIGRATE(10))
>
> NOAM - NO AUTOMIGRATION
> AREC  - AUTORECALL
> NOAB - NO AUTOBACKUP
> NOAD - NO AUTODUMP
> Migrate after 10 days on non-use (command migration only).
>
> Not sure about the volumepool statement. Check the fine manuals.
>
> HTH,
>
> <snip>
> ADDVOL SYS009 PRIMARY(NOAM AREC NOAB NOAD MIGRATE(10)) UNIT(3390) 
> ADDVOL SYS010 PRIMARY(NOAM AREC NOAB NOAD MIGRATE(10)) UNIT(3390) 
> ADDVOL SYS011 PRIMARY(NOAM AREC NOAB NOAD MIGRATE(10)) UNIT(3390)
>
> DEFINE VOLUMEPOOL(SYS VOLUMES(SYS009 SYS010 SYS011))
>
> I am not sure what it is supposed to do since there is no other parms.  At 
> first I thought it was for a dump.  There are no other SETSYS statements 
> after the DEFINE VOLUMEPOOL statement.
>  </snip>
>
> ----------------------------------------------------------------------
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> email to [email protected] with the message: INFO IBM-MAIN



--
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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