When I fire up Perfmon on the hyper-v host, it shows only disk io for that host, and it doesn't seem to include the aggragte disk IO for all machines on the host. Is there something special I need to setup in perfmon to read total IO on the entire server? Is there another tool I should be using to take these readings?
Background: I currently have ~20 VMs on a Hyper-V host sitting on six 15k RPM local SAS drives in RAID 10. I'm looking at potentially moving to iSCSI, but I want to make sure that I'm not using more throughput than the iSCSI can provide. (I'm looking at 1 Gbps, not 10).