Here is a fun one I came across. This slide deck by Eric Sloof and Mattias Sundling details VMware myths and either busts or confirms the myth. The following VMware myths are tackled in this article/presentation:
- VMware HA works out-of-the-box - Busted. There are several things the admin will need to do to get HA working in a vSphere environment.
- VMware snapshots impacts performance - Confirmed. Snapshots still have impact on performance.
- Disk provisioning type doesn’t affect performance - Busted. Thin and Lazy Zeroed disks have the same speed. Once allocated, these disks are as fast as Zeroed disks. Thick Provision Eager Zeroed offer best performance from first write on.
- Always use VMware tools to sync the time in your VM - Busted. Use W32Time or NTP. Do not use VMware Tools period sync.
For more explanation these conclusions and to download the PowerPoint deck, continue reading at the source...