Some things never change, or do they? vSphere is getting new and improved features with every release. These features change the characteristics and performance of the virtual machines. If you are not up to speed, you will probably manage your environment based on old and inaccurate information. The vMythbusters have collected a series of interesting hot topics that we have seen widely discussed in virtualization communities, on blogs and on Twitter. We’ve put these topics to the test in our lab to determine if they are a myth or not.
• Defrag your Guest OS disks for best performance
• E1000 is faster than VMXNET3
• CBT causes significant overhead on your VMs
• HA datastore heartbeats prevents host isolation
• LSI SCSI is always better than Paravirtual SCSI
