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Hi @khineminn 

I want to join to @the_rock and I want to explain with my words too 🙂 

You said that, you want to know from the MGMT server point to view:

If the MGMT is not a VM (e,g, VMware) I always use system backup because it contains all of the necessary things that I need for revert. I do tests on MGMT ant LOG server the steps are the following:

• I make a system backup and save it to an another location
  • before I do the next step I make and md5 hash on both side -> ensure the hashes are the same
• I reinstall the appliance (or open server)
• install the JHF what is required
• upload, and restrore the backup file
• test it, test it, test is

Don't forget, the backup does not contain the logs!!!

If you have time, do this steps in a LAB, and you will be confident in live situation 🙂

Akos