When server virtualization started to get its foothold, one of the key reasons for going virtual was the ROI that could be saved from running many servers on one physical box. It would make logical sense that this same key point can be applied to other aspects of virtualization and now we are really seeing the consolidation within the I/O area. This is the point where virtual I/O will really start to take off. After all, haven’t we all seen this nightmare during our career?
There seem to be three styles of IO Virtualization (IOV) taking place within the virtual environment. At VMworld, the IO Virtualization companies were out and talking to people about their wares, products, and approaches to IO Virtualization. These three methods are:
- Converged Network Adapters used within Cisco UCS, HP Matrix, etc.
- Attached IOV top of rack devices such as the Xsigo Device
- PCIe Extenders
Each of these provide unique benefits to your virtual environment but which to use? First, we need to know what each of these approaches brings to the table.