EV Building Block Configurations

Hi

Is there a very good clear document for what the required infrastructure needs are to be able to use Building Blocks for DR. I can find 'bits' of information but not enough to get a clear understanding.

for example, it appears that all the resources need to be shared - which is fine for SQL as I have a separate SQL server and also the vault stores are via cif shares so that should be fine, but do Indexes need to be a shared resource too? My indexes are on fast SAN disk (as indexes on cifs isn't recommneded) presented to each EV server so how does this bit work? 

kind regards

KL