When we rearranged our tape pools, we did a move node.  We did not look
for a way to move the tape because we where changing tape technology.
Recreating the copy pool is easy; a backup storage pool to a new copy
pool will work fine.  Beware that the data will remain in the old copy
pool, to fix this you will need to delete the copy pool volumes.  We
moved all of the nodes and deleted every volume in the copy pool (about
1000 tapes) and let backup storage pool create new volumes. (about 50
tapes)

Andy Huebner

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Haberstroh, Debbie (IT)
Sent: Thursday, July 12, 2007 1:02 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] separation of copypool tapes

We have a large database, 170Gb and are proposing to our customer that
it be separated into multiple servers.  Unfortunately when the system
was designed, more than half of the nodes were directed to the same
tapepool and copypool.  The tapepool is collocated by node, the copypool
is not.  Before migration, I would like to setup new disk,tape and copy
pools and split the nodes so they can be easily moved to the new servers
since multiple servers cannot own the same tape (the library will be
shared).  It is easy enough to change the diskpool and write new data to
the new tape/copypools, but I have a couple questions about the tapepool
and copypool moves of the old data.  

Is there an easy way to move the tapepool tapes to a new tapepool or do
I need to use the move nodedata commands.  I can't rename them since not
all of the nodes currently in a pool will be on the same server.  I also
don't see an update volume command that would allow me to change the
pool name.

 Second, once I have the data on the new tapepool tapes, can I simply
run a backup tapepool to the new copypool or do I need to do a move
nodedata specifying the old copypool to new copypool.  If I do a backup
of the new tapepool, what happens to the data currently on the existing
copypool, does it disappear or do I need to delete it.  Thanks. 

Debbie Haberstroh
Server Administration
Northrop Grumman Information Technology 
Commercial, State & Local (CSL)


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