System Information;

Host Operating System: VMWare ESXi 6.7
Operating System : Windows Server 2019 (running on Virtual Machine) with Wonderware System Platform 2017 (full Redundancy on Domain, Historian and AOS also running in Virtual Machine).

Problem : Connect to existing PI Server

Questions:

1. Can I install Matrikon OPC Tunneller UA+DA+HDA and OPC Server and Client (forgot the name) in a single Server PC?
2. Can I retrieved Alarms & Events using OPC Server and Client?
3. Since our Historian is redundant, do i need to used 2 Matrikon OPC Tunneller and OPC Server and Client for bumpless operation?

We already have the 2 Matrikon OPC Tunneller +UA+DA+HDA and 2 OPC Server and Client, I just don't know to implement the connectivity.

Thanks for the help in advance.