Intellisnap support for ubunut 20.x with HP3PAR storeserv storage array.

Good afternoon.  Looking at the documentation, it appears that the Unix File System agent is supported for Intellisnap with the HP 3PAR StorServe array is.  

https://documentation.commvault.com/2022e/essential/106164_supported_arrays_and_agents.html

As to your other question: 
“If yes does it will cause any harm to data while doing testing of backup.” 

There is no harm to data while testing.

Thanks. But somewhere in the documentation, I see ubuntu 18.x and later versions are not supported.