One of the biggest challenges to expanding a virtual server infrastructure is dealing with the storage challenges that often come with the deployment. The way storage is used in the virtual infrastructure is unlike most use cases. In this environment we want the same storage area to be accessed by almost every connecting server and each of those servers may have dozens of workloads trying to access that storage at the same time.When deciding what storage is best for server virtualization many vendors try to isolate down to a single capability that their storage happens to have that makes their product the best storage platform for the virtualized environment. One area of this discussion is often on what protocol to use. Your choices typically are iSCSI, Fibre Channel or NAS. In addition there are newer options coming out, shared SAS and ATA over Ethernet (AoE) are two examples. The choice you make can allow for that shared everything world to be more easily implemented. As we discuss in our recent article “VMware Storage Simplification Strategies” protocol selection is important and depending on the environment may be a key issue for consideration, but the protocol is just one of the decision points.
The capabilities of the system itself are critical. There are two capabilities to look for here.
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-by:George Crump
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