I hope someone can provide some help, I need to deploy a CSM module for the purpose of Disaster Recovery, the objective is to be able have a standby server in site B so when the server(s) in site A fails to have the CSM direct all traffic to the standby server is site B (please see diagram) the problem is that I've been reading on CSM and I'm supposed to create "client vlans" and "server vlans" and I'm not sure if this applies to my topology (diagram) or objective, the 6509 that have the CSM's is connected directly with a layer 3 10 Gb link to the 6509 is site B that hosts the standby servers, where does the "client vlan" fit? users are already spread over different networks across the WAN/LAN, and what about the server vlan? I appreciate any input...
"the "client Vlan" is where the VIP for the server farm will be placed (vserver) and will have an SVI on the MSFC, the "server Vlan" is the Vlan where the real servers are located, these real servers will use the CSM for routing out of their subnet, correct?"
if you are talking about routed mode on the CSM then you are spot on.
As for DNS, no the CSM cannot automatically register a DNS name although the CSM can automatically inject/remove a VIP IP address into the routing tables - this may be some use in a failover situation. If you are interested have a look at reverse route injection in the CSM documentation.
If you want automatic DNS updates for VIPs then you need to look at something like the GSS (Global Site Selector) which can communicate with the CSM's and point requests to different VIPs based on their availability.
One last point. More than happy to help when i can but there is a more suitable forum to post into
"Data Centre" -> "Application Networking"
one of Cisco's experts on load-balancing frequents that group as well as quite a few other very experienced people.
But like i say, more than happy to help when i can.