How to make a backup functionality of the server?

Question

Windows

There is a server (Windows Server 2003), RAID5, which serves as a terminal server (25-30 users work in 1C at the same time) + file exchanger (shared folders and documents), the server is vital, because if it fails, losses will occur because all production costs. It is necessary to make sure that at the slightest malfunction / inoperability / breakdown of this server, no one notices this, so that you can, for example, switch to some kind of backup within an hour. How can this be done, with the help of what, preferably at a lower cost?

Answer 1

virtualization, create a clone of this system on a virtual machine, run users there and transfer the physical server to a virtual machine and connect it to the farm

Answer 2

It is called a failover cluster, did not do it due to lack of need.
www.osp.ru/win2000/2013/05/13035365

Answer 3

If it's fast and cheap, then just backup every day. In the event of a breakdown, deploy everything from the backup to the first computer that comes across.
And yes, it is best to switch to virtual servers. Again, if it's fast, then 2GB of memory + virtual machine memory is enough for one system, i.e. in your case 16+8.
Switch to virtualization, after iron servers - administration is just a song.