HP StorageWorks Clustered File System 3.2.1 Windows Storage Server Edition Administration Guide (February 2006)

Chapter 14: Test Your Configuration 144
The DNS name is www.acmd.com and 192.168.100.1 is a virtual host with
primary on acmd1 and backup on acmd2. 192.168.100.2 is primary on
acmd2 and backup on acmd1. DNS is set up to round robin on the servers
acmd1 and acmd2, using the virtual host addresses 192.168.100.1 and
192.168.100.2.
Validate Correct Load-Balancing Operation
The following procedure validates that DNS round robin and HP
Clustered File System are working correctly. To test the access, use the
%SYSTEMROOT%\system32\PING.EXE utility.
1. Ping www.acmd.com.
2. Validate that the returned IP address is 192.168.100.1.
3. Ping www.acmd.com.
4. Validate that the returned IP address is 192.168.100.2.
5. Continue to ping and validate that the opposite IP address is returned
by DNS.
Validate Load-Balancing When a Server Is Down
This test verifies that the load-balanced cluster operates correctly when
one of the servers is down or removed from the cluster. The latter part of
the test validates that the server begins to handle its portion of the load-
balanced traffic when it rejoins the cluster.
1. From the HP CFS Management Console, log into one of the servers in
the cluster.
2. Pull the LAN network connection(s) from a server that you are not
logged onto.
3. Verify that HP Clustered File System detects that the server is down
and that the backup for this virtual host takes over operation from the
primary.
4. Ping the address www.acmd.com multiple times.
5. Verify that all requests are still being returned correctly.
6. Restore the LAN network connections.