Either works, it all depends on what you are trying to achieve.

A Copy pool will help in 2 ways:

1.  You have another copy of the data incase of media failure
2.  You have a copy of the data incase of Library/DC/Site failure

So if you have you copy pool in the same library as your primary and leave 
the tapes in - you are only addressing number 1.  If you take them out 
every time you run a backup stgpool, you are covering both.  Down side is 
that it's a manual operation.

Now if your copy pools is in another library AWAY from the primary, you 
are covering both AND it's still automated.

It all comes down to cost at the end of the day.

Obviously you need to do the same with DB backups to be able to recovery 
anything.

Steven

Steven Langdale
Global Information Services
EAME SAN/Storage Planning and Implementation
( Phone : +44 (0)1733 584175
( Mob: +44 (0)7876 216782
ü Conference: +44 (0)208 609 7400 Code: 331817
+ Email: steven.langdale AT cat DOT com

 



Mehdi Salehi <iranian.aix.support AT GMAIL DOT COM> 
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19/01/2010 12:06
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[ADSM-L] storage pool and its copy pool on a tape library




Caterpillar: Confidential Green Retain Until: 18/02/2010 



Hi,
What is the best practice to backup a tape storage pool? Is is
possible/recommended to use one tape library (with enough drives) for a
storage pool and its copy pool? How about dedicating a tape library to 
copy
storage pool?

thanks so much