Access for SAN using HBA

Dears,

I have my existing Windows 2012 with Hyper-V Role installed and configured, and I also have VMs with Path through Disks.

I am accessing my LUNs using HBA and Storage which are compatible with SAN Manager.

My Concern, that I am afraid to lost connectivity with LUNs after configuring SAN Manager (coz when I configure Virtual Network, the NIC become not usable for the Host).

So, I want to know the following:

1. Does configure Virtual SAN Manager will make my hosts and VMs lost connectivity to SAN?
2. Does configuring Virtual SAN Manager will make interruption for Hyper-V Host LUNs and VMs Path through LUNs?
3. If, How Long this interruption will be?

Thanks