I am little bit confused with some of the latency numbers & need some clarification. What I read from internet resources is that iSCSI has more latency compared to FC & FCOE because of the TCP/IP overhead.
Looking at reference architecture for VDI (http://www.cisco.com/c/dam/en/us/solutions/collateral/data-center-virtualization/dc-partner-vmware/guide_c07-719522.pdf)
the average read & write latency numbers are below 12ms.
If anybody can shed light on this, I will appreciate.