If it's a windows server, map the network drive to the folder location
on slave 1 and then use this location in the Mount option.
For ex, if you are creating a folder on slave1 on as D:\vaults\test01
map this folder to slave 2 as <drive letter=">:\vaults and then in the
mount option for slave 2 use <drive letter=">:\test01 as the folder path
and then validate.
Best Regards
Rajesh Balasundaram