We just did this with Veritas cluster and NB 4.5 FP6 here.

You do need to create the individual storage units for each node(mainly
so you can backup what isn't cluster such as the OS itself).

You then create ANOTHER storage unit for the cluster (we used the
virtual name of our cluster for this).   That is to say there should be
one IP that goes to the first node, another IP that goes to the second
node and yet a third IP that goes to the virtual name.

When you create your policy use the storage unit for the cluster rather
than either of the one's for the nodes.  That way in a failover scenario
it will still back up the active node.

Example:  
Cluster named atlpra made up of two nodes, atlpra01 and atlpra02.  Using
an L700 with 20 Ultrium drives:

      1) bpadm
      2) Choose a) Add Storage Unit...
      3) Enter storage unit label:  - Entered atlpra_L700
      4) Enter host name:  Entered atlpra (The virtual-NOT atlpra01 or
atlpra02)
      5) For Storage Unit Type chose option 2) Media Manager
      6) For Robot Type chose option 8) TLD - Tape Library DLT
      7) Enter this device's robot number: - Entered 2
      8) For Density chose  8) hcart - 1/2 Inch Cartridge
      9) Enter number of drives: - Entered 20
     10) Use this storage unit only if required by a policy or schedule?
-               no
     11) What maximum multiplexing factor should be used per drive? -
Entered 1
     12) Enter maximum fragment size (in MB) or 0 for unlimited: -
Entered 0
     13) Add storage unit? - Answered Yes

-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Marek
Gorka
Sent: Tuesday, March 15, 2005 6:03 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] backing up logical host with sso

hi.

i have the following issue to solve.

a two node cluster running one logical host. both cluster physical nodes
are 
connected to a library via san. they therefore are media servers.

the nbu master server runs on a separate box, also connected to san.

according to sso manual i have to create two storage units, each for
every 
physical cluster node. suppose i call them A_stu for node 1 and B_stu
for 
node 2. of course the storage units correspond to the same library and
they 
have media servers set accordingly to each physical node.

i want to backup the logical host via san despite the fact on which
physical 
node it actually runs on.

i have to prepare a policy then to backup the logical host. in the
policy 
config i have to set the storage unit to use and here's where the
problem 
exists. which storage unit should i choose here to be able to backup the

logical host?

if i set the stu do A_stu and the logical host migrates to node B, it
will 
be backed up via LAN to A_stu.

i was wandering if setting the storage unit to Any_Available will solve
the 
problem, but i have no chance of testing this.

can anyone help with it? or maybe there's a better solution?

nbu is 5.1.

best regards,

-m
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