I have a couple of servers at home for personal use, and I'm considering replacing them with rack servers that I'd scrounge up in used condition, just for easier management and whatnot.
I don't have any professional experience dealing with rack servers, however, and I seem to be having trouble finding good information on the webs. What concerns me the most is whether and/or to what degree rack-server components are standardized. If a motherboard. PSU or fan breaks, what are the chances that I can recycle a similar component from another server for replacement instead of having to order original replacement parts from the vendor?
On the tower side, we obviously have nice standards like ATX, but I haven't been able to find anything similar for rack devices. Does that mean that they don't exist, or just that I've been blind? If they exist but aren't universally adopted, are some vendors better than others? Are there other aspects I should keep in mind if I don't generally want to have to get involved with the original vendors?