Hello:

I have two server which I want to configure as an
Active/Active cluster. In doing so, I am trying to
determine all the necessary IP addresses required for this
setup.

I understand that each node will have two NICs (one
PRIVATE and the other PUBLIC), and as such would require
two IP addresses.

I also gather that there would need to be a CLUSTER IP
address (virtual IP) that users will use to communicate
with either of these two nodes

I've also read that when installing SQL Server on a
cluster, you'd need to define the IP address used by the
virtual SQL Server. This IP address will be unique and
will be used by SQL Server. What I'm trying to comprehend
is how does this IP address communicate with Microsoft
Clustering Services (MSCS), given that SQL clustering
services sits on top of MSCS?

What other IP addresses would I require? Would it be any
different in an Active/Passive clustered environment.
Please help, I'm confused. Thanks.

Here is a great place to start and learn more:
http://www.microsoft.com/technet/pro.../failclus.mspx

SQL will need a clustered IP address that will move along with the instance
and database(s) to the controlling node. You won't need any other IP
addresses, unless you want another instance of SQL. To allow SQL to control
a second instance or do Active/Active.

Cheers,

Rod

MVP - Windows Server - Clustering
http://www.nw-america.com - Clustering

"Rob" <anonymous (AT) discussions (DOT) microsoft.com> wrote