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Posts tagged ‘teaming’

29
May

Hyper-V / VMM 2012 R2 and VMQ, Part 1

Microsoft has been gaining ground in the virtualization sphere one step at a time since Hyper-V first premiered. While the some increments were negligible (or merely painstakingly obvious), they achieved significant breakthroughs in late 2013 with the release of all things “2012 R2”. The puzzle piece on which we’ll focus here is VMQ (specifically dynamic VMQ, or dVMQ).

VMQ gives Hyper-V and System Center Virtual Machine Manager (VMM) Logical Switches what Receive Side Scaling (RSS) provides to physical servers; namely, it leverages multiple compute cores/interrupts to increase network traffic efficiency. The network teaming (or Load-Balancing Fail-Over, LBFO) configuration is important here, because it affects how VMQ maps queues to processors. The full table of possibilities is given halfway down the page of TechNet’s VMQ Deep Dive, Part 2. In a nutshell, some configurations need NIC queues to overlap the same processors (so that all queues are everywhere), while others need segregation (so every queue has its own unique core).

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