I would like to know what are the minimum server hardware specifications for the following requirements:
* 25 concurrent users
* print server (4 network printers)
* Domain controller
* backup server
Can someone help me please?
You can't just put hard numbers to something like that, but I can tell if you can buy just about any low to mid range server level system and you should be fine for such a small userbase. Honestly a 10 year old PC could even handle what you have there if the size of the HD is good enough. The real question you need to ask is about storage. Do you have enough storage (either on this server or elsewhere) for your backups?
Thanks for your answer.
Yes storage is not the problem. I just want to keep in mind that our company may increase in size, therefore the concurrent users will increase as well. I just want to know what minimum CPU & RAM specs do I need. Cheers
Whichever OS you choose should have minimum specs, that should be able to handle your requirements. I'd recommend getting as much as your budget allows (within reason.)