I have three Hyper-V host nodes running in production with a Dell Equallogic iSCSI SAN for storage. All host nodes are running Server 2008 ENT R2 CORE. I never installed the Host Integration Tools. I setup MPIO via iSCSI Initiator and everything has been working perfectly. At this point I'm implementing DPM 2010 and looking further into Hardware VSS drivers. Researching this I'm finding that I possibly should have installed Host Integration Tools to "properly" configure the hosts for optimal performance. Is that correct? At this point, with everything configured, how do I go about installing those tools and taking advantage of the MPIO and VSS features?