Good evening folks

We currently use Commvault to backup our Exchange Online (EXO) environment and I have recently been reviewing Commvault DR options and have become a bit stuck for EXO.

The components involved for EXO backups I believe are …

-Access Node

-Index Server

-Web Server

The access node and index server I understand why their needed but I am at a bit of a loss as what role the web server plays. If I change the web server under properties of the access node to another web server the restores fail so clearly the websites play a crucial role. I have read the CV documentation but am still no further forward - I can see that there is some sort of search svc installed.

Any clarify that can be provided would be much appreciated.