I want to build a proper server with room for 40+ HDDs to move my media server to and have RAID 1. I know a lot about PCs and software, but when it comes to server hardware I have no clue what I'm doing. How would I go about building a server that has access to 40+ RAID 1'd HDDs?
Check out labgopher.com. I think that link was first posted to r/homelab back in the day, but I've kept it in my bookmarks for exactly this.