The purpose of a Storage Group is to give you the ability to write to a
specified group of Storage Units. A Storage Group that contained All
Storage Units would be the same as selecting Any Available in a backup
Policy.
When the Policy runs, you will still see the backup go to one of the
Storage Units in the Storage Unit Group.
An example of where a Storage Group is beneficial is if you have
multiple Media Servers on a single subnet. You could create a Storage
Group for the xxx Subnet that has Storage Units from Media Server 1 and
Media Server 2 who both have NICs on the xxx Subnet. When the backup
runs, the data will go to either MS1 or MS2.
Another example would be a Storage Group for a Media Server that has
multiple Robots attached. Since a Storage Unit can only contain 1
robot, if you have more than one Robot attached to your server you'll
need to create multiple Storage Units. Example - let's say you've got 3
LTO-2 tape drives in Robot 1 on SAN Fabric A and 3 LTO-2 tape drives in
Robot 2 on SAN Fabric B. If you want all of those Storage Units to be
available for a backup Policy, you should create a Storage Group with
both Storage Units in it.
Russell
-----Original Message-----
Message: 8
From: <bobbyrjw AT bellsouth DOT net>
To: <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Wed, 27 Jul 2005 12:16:01 -0400
Subject: [Veritas-bu] How do Storage groups need to be set up?
In trying to configure and use a storage group, it seems that the
backups continue to go to the individual storage units.
Master is Solaris 8, NB 4.5FP8. Media servers are 1 Sun, 1 Win2k. ADIC
10K library with 20 LTO-2 drives.
If you are going to use a storage group set up, do you make sure that no
policies are using "Any Available"?
Do you start to specifically assign the storage groups to each policy?
I really can't find any "good" documentation about correctly configuring
a storage group. The docs just say to do it, but not what to do with
it.
Thanks.
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