Which of the following is a recommended option to help them achieve higher availability?

You are the VMware architect for Mason Public Library. This customer deployed a VMware
environment several years ago, in the form of 3 stand-alone servers, each with 6 600GB internal
SAS drives. The environment has been working well, but they are concerned about the ability to
access their virtual machines in the event of a failure to one of their servers. They do not have the
additional budget for a new shared storage array. Which of the following is a recommended option
to help them achieve higher availability?

A.
Power off each virtual machine and copy them to a single server

B.
Deploy vCenter Server and deploy the vSphere Storage Appliance

C.
Use Storage vMotion to move all of the VMs to a single server

D.
Configure CPU affinity to increase CPU access for each virtual machine

Explanation:
http://www.esaa-members.com/app/webroot/marketing_docs/VMware-vSphere

Storage-Appliance-Datasheet.pdf