How much info about the cache-cluster does the client have and What would you recommend about putting the cluster behind virtual ip

Hi,
I will appreciate if someone can point me to some documentation as to how app-fabric client library accesses the app-fabric cluster.
What I have found so far is that the list of hosts provided in the client configuration are used as an entry point into the Cache-Cluster. By connecting to one of hosts, the client will download information about all the hosts constituting the cluster.
Since a named cache is distributed across the entire cluster, and the data can be stored on any node. How does the client decide which node it should connect to, to get the data from. Does the client have enough information to know which host has the data
or the client will connect to one of the nodes, if the node has data, it will serve it otherwise redirect the client to the node that has the data.
I also would like to know what do you say about the idea that we would like to put our cache-cluster behind a virtual ip, so that if needed, we can take down nodes or add more nodes. In fact the virtual ip will that of a load balancer, but we don't plan to
use it for load balancing purposes but the idea is that the client will have the virtual ip address and we can repoint this IP address, if we need to take out a node for maintenance reason.

I'm not sure about the reason for putting the cache servers in a VIP, but one of the reasons why the cache servers should be made known to the servers is because of auto load balancing and throughput
Imagine i have 10 cache servers running on 1G ethernet links, theoretically i have 10G usable bandwidth and the clients will be able to manage and load balance if any of the cache server fails or have performance issues
Now if all these were parked behind a VIP
1. The LB now does the load balancing, which may not be optimal
2. The LB may not have 10G upstream and 10G downstream, even if it has, this is quite a waste of resource\

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How much info about the cache-cluster does the client have and What would you recommend about putting the cluster behind virtual ip

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