Question about backup of VCSA 6.7

I seemed to have searched the world over but cannot find an answer

I have vcsa 6.7 setup and running

I also have a separate Platform service controller also 6.7

When I log into the vCenter Server Appliance Management Interface,

it says Backup.

There is no problem with backing up I was wondering that when it

does the backup does it also backup the separate

Platform Service Controller?  If not can you point me where to find

this information?!