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An administrator has determined that storage performance to a group of virtual machines is reduced during peak activity.
The virtual machines are located in a VMFS datastore called Production1 on an active-active storage array.
The ESXi 5.x host running the virtual machines is configured with an MRU multipathing policy.
Which two actions can be taken to improve the storage performance of these virtual machines? (Choose two.)
A. Add virtual storage, create a VMFS datastore called Production2 on the new storage, and then migrate some of the virtual machines from Production1 to Production2.
B. Change the storage multipathing policy to Round Robin.
C. Add physical storage, create a VMFS datastore called Production2 on the new storage, and then migrate some of the virtual machines from Production1 to Production2.
D. Change the storage multipathing policy to Fixed with default settings.
Correct Answer: BC
Explanation/Reference:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1011340
Round Robin (RR): Uses an automatic path selection rotating through all available paths, enabling the distribution of load across the configured paths.
For Active/Passive storage arrays, only the paths to the active controller will be used in the Round Robin policy.
For Active/Active storage arrays, all paths will be used in the Round Robin policy.
Storage performance refers to how to how efficiently, (typically how quickly), storage operates. By adding a new datastore, and migrate a portion of the virtual machines from Production1 to Production2 is likely to reduce the load on the original datastore. It will improve responsiveness and hence performance.