Exporting diagnostic data is extremely important knowledge repository. It primarily need when you need a vmware support and it can be of great help if you wish to troubleshoot vSphere problem. There are several ways to collect the data.
- Directly from ESXi host
- Connecting to ESX host and using vm-support option
From vCenter go to the Administration-> Server Settings i.e (Ctrl + Shift + I)
(Optional) Change the logging level to Verbose it is information by default.
Click on Administration, select export system log
Select the esxi server whose diagnostic data you wish to export and it’s destination
Check the recent task status below
Once task is completed, you below screen which confirms if export was done without error.