Dell Equallogic with ASM running + UPS shutdown script

Hi all,

Apologies if this is a bit of a newbie question as I have not really worked with Equallogics much.

The setup is that we have Equallogics running with Auto Snapshot on some of the volumes (that VM's run off of).

I am looking to implement a shutdown script with my UPS and just had a few questions.

If my UPS detects a power issue for more than x amount of time and sends the necessary command to my server what I want it to do is Powershell into the ESX hosts, shut down the VM's and then wait before shutting down the hosts themselves.

Now, if we have ASM setup on some of these servers (Windows Server 2012 File servers) I have been told that previously if we wanted to shut down this server we need to RDP in, stop any ASM replication, close any open files and then I can shut it down.

But is this entirely necessary? Surely if I just shut down the server it would just stop that replication anyway? Or would it potentially cause an issue.

If the latter then is there anyway to script the stopping of said replication?

Thanks in advance.