What is the best way to organize a replica of a network folder based on MS Server?

Question

replication

Good afternoon.
There is a network share of about 1.5 TB with office files. Spinning on the basis of MS Server 2008 with an extensive system of rights NTFS (inherited). All this business is regularly backed up to a remote server and Shadow Copy is made for prompt recovery of deleted files.
I want to have at hand a fresh replica of these same files on another server, so that if the main server crashes, I can continue to work painlessly.
Can you please tell me a reliable solution of the fault tolerance scheme within 1-2 hours? You can switch manually. The simpler and more reliable, the better, as long as NTFS inherits the rights. OS doesn't matter. I am a novice administrator and have not dealt with cluster FS yet.
Let's say deploy another server based on MS Server and set up replication via DFS according to the point-to-point scheme, but without publishing. Or upgrade the server itself to version 2012R2 and use MS Storage Replica technology.