I have a 7 year old HP ProLiant N40L mini server that's been running strong and I am starting to think about upgrading it. I use it for my NAS, Docker, and VirtualBox. I would like to try to get something with more horsepower and possibly with hardware RAID. What are some comparable options that won't break the bank (no more then $500 USD)?
I plan on reusing my disks, so that cuts down the budget big time.