As Virtual Machines (VMs) are getting more powerful, we have been migrating many SQL Servers into VMs and recently after we did a initial requirement for our Veeam Backup DB server, we started to notice performance issues. On the VM, only half of the CPUs were 100% while the others were less than 20%. We checked to make sure there we have enough CPUs assigned in total 16 and even tried adjusting to make sure there was no MAXDOP hints on the queries. Even after checking these, the VM still only used the first 8 CPUs out of the 16 CPUs.
At the ESX Console, log in and hit Alt-F1 then type unsupported and hit Enter. You won’t see the word “unsupported” appear as you type it but upon hitting Enter, you’ll be prompted for the root password. Type it in and hit Enter.
You be presented with the ESXi command prompt. The default text editor in ESXi CLI is vi: