I Have a pentium dual core E2180 with 2GB RAM and 2TB Hard Disk. I'ts a poor config, is my old computer.

I would like to know if I can run Unraid to keep my server always running, basically it would keep my Mongodb database and an application running on nodeJs. Would that OS be good for me or is it better to go with Linux? Thank you for your help.

Should be fine for you.  Run whatever you need as docker containers.

More RAM would be better. 

1 hour ago, Douglas Samuel said:

or is it better to go with Linux

Unraid is based on Linux.

5 hours ago, ghost82 said:

Unraid is based on Linux.

yes i know but i have a poor config andI don't have much hope that it runs well, in linux I can use the simplest version with only "cmd" 

5 hours ago, trurl said:

More RAM would be better. 

thanks i you try to up for 4GB and setup unraid.