Does impact of disabling SMB1 on fileshare witness server and running exchange server environment

Yesterday one of our client sent me the following query and ask if it does impact on the running environment or not see the following query may you will face alike situation

Query below

We are running MS Exchange

Server 2013 in a DAG Mode like as you know the whole enviornment but for the

assure below are our whole environment

Node 1 which contains CAS

Server 1(Note: This server is also a fileshare Witness Server)

Mailboxserver1

Node 2 which contains CAS

Server 2

Mailboxserver2

As you know that we are

running Server 2012 Standard. Mailboxserver 1 & 2 are running in a cluster

mode and CAS1 is a fileshare witness Server

I am Planning to disable

SMB1 on servers which included fileshare witness Server. My question is that is

there any impact on disabling SMB1 on all the exchange Servers and on the

fileshare witness server?

And kindly tell me the best practice to restart each node or is there anything I have to do before restarting each node since FSW is running

Answer to the Query

I did this already so I can say very categorically that It does not impact on your running environment

You can do this by PowerShell. You don’t need to restart you servers. The FSW is not in play in a DAG unless you are in danger of losing quorum.