Get combined result csv of distributed testing from non-gui mode

Hello All,

I am doing load testing of my application with 2500 thread per hour for 24
hours and now for some time jmeter unable to connect with application
server and return error like org.apache.http.conn.HttpHostConnectException:
Connection to http://a.b.c.d:8080 refused.

I have searched for this and found that number of threads are very high and
we need to use distributed testing. I have use two slave machines and one
master machine and put load of 1250 on both the slaves using non-gui mode.

Now I am unable to save result of the plan.

Please suggest me how can we store result file on master machine or we
need to save it on slave machines.