The computer rack was installed in the closet behind louvered doors, so the noise never got to be an issue. Cooling during the summer was sometimes a concern so I had a box fan to increase air flow. The rack was built to accommodate laptops in sliding trays, with only two towers in the lower level. The tower was 2'x2'x4' high, made of oak with an open framework for air flow. Each tray had it's own power supply, Cat5 and KVM cables, with a large UPS on the bottom tray. 4" industrial casters on the bottom allowed me to roll it out for maintenance. I was sad to see it go.
Now, besides the cloud, I have twin NAS boxes on a shelf. One is a file history backup and disk image store, which backs up periodically to the other box. I also use Duplicati to back up everything to OneDrive folders every night. Never lost a file.
The cloud storage and Azure access comes free with my Visual Studio subscription. I've maintained this for the last 20+ years (used to be MSDN) to get access to OS and dev tools, so cost is really not in the equation, although I'd guess just the savings in electricity would add up.
All in all, I'm very happy with the setup.