VM Measurement iSCSI
Host Measurement iSCSI
Lately I've been measuring performance of iSCSI and NFS. I transferred a 3 gig iso file to each storage pool. I tested the iSCSI pool first. As you can see above the there is a bit more CPU activity with iSCSI due to all the extra network activity. That would concern me a bit in a large scale ESX enviroment. I'll be onsite in a few days where they use iSCSI for the whole site. I'm interested to see how it performs.