Agreed. The Exchange 2010 DAG cluster setup seems to be a brain
damaged version of MSCS. We had to do the same thing – contact the DAG name via
the public DAG name – essentially the cluster virtual name. (Of course, in a
firewalled environment this is painful.) Then, in the preferred server list for
the DAG backup, we specified the names of the backup interfaces of the DAG
servers. The initial communication and pre-processing occurs with the public
DAG name, but the backup data will go over the private backup network.
The DAG cluster is managed through the Exchange management
tools, not through MSCS tools.
From: [email protected]
[mailto:[email protected]] On Behalf Of Lightner, Jeff
Sent: Wednesday, January 25, 2012 12:17 PM
To: [email protected]
Subject: Re: [Veritas-bu] Exchange 2010 DAG private backup network failover
provision
My MS guy isn’t here but from my master’s hosts file I have comments that say:
Exchange DAG backup starts with DAG host name (DAG1, DAG2, DAG3 etc...) but
then dispatches to preferred node to do the actual data backup. It switches to
other node if preferred isn't available.
So the DAG address (DAG1, DAG2, DAG3) is the 10.x non-private LAN but for the
last DAG we added (DAG 3)
I created private LAN addresses in the 172.x range like the rest of our backup
LAN IPs and it worked.
So if you had a 2 node DAG setup you might have entries for
DAG that had a single IP for that DAG in the non-private network.
host1 that has a private network IP for the first (preferred) node.
host2 that has a private network IP for the second (preferred) node.
Not sure how that is configured on the MS side though.
________________________________
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]]<mailto:[mailto:[email protected]]>
On Behalf Of Herbert.George
Sent: Wednesday, January 25, 2012 12:38 PM
To: [email protected]<mailto:[email protected]>
Subject: [Veritas-bu] Exchange 2010 DAG private backup network failover
provision
I am curious if anyone has implemented backups for Exchange 2010 DAG over a
private backup network.
If the Exchange setup were an ordinary cluster, we could create a cluster
resource for the backup NIC and have it reregister on another server if the
main server fails. On exchange 2010, I understand that the is no real cluster
but only a “pseudo”-cluster. I am at a loss as to how to handle this.
Thanks,
George Herbert
SunTrust Banks, Inc.
Live Solid. Bank Solid.
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