How to Achieve Maximum
BY BRIEN M. POSEY A
big server virtualization trend involves achieving the maximum
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virtual machine (VM) density within the available host servers. As the VM density increases, the hardware cost per VM decreases, and network administrators will often pack physical servers with as many processor cores and as much memory as the server can accommodate. Unfortunately, the server’s network ports often limit the server’s VM density, as each VM on the host server requires network connectivity. While a network interface card (NIC) can be shared among multiple VMs, there is only so much network bandwidth to go around. This can be problematic, especially if some of the virtual servers are running network-intensive applications. Fortunately, there are ways to increase the amount of network bandwidth available to your VMs, possibly allowing you to increase the VM density on your host servers.
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