Video Timeline:
0:00 - Intro 
0:27 - What is Form factor? (Towers/Racks/Blades)
2:01 - Small note about Server Noise
3:30 - What do server names mean?
3:57 - What's meant by "HP Proliant DL380 G7"?
7:27 - What's meant by "Dell PowerEdge R710"?
8:34 - Server Buying Options (New/Refurbished/Used/For Parts)
11:42 - LabGopher = Ebay + Servers + Maching Learning

Related Links:
Rack Unit:
https://en.wikipedia.org/wiki/List_of_unusual_units_of_measurement#Rack_unit

Server Names:
https://en.wikipedia.org/wiki/ProLiant
https://www.dell.com/support/article/en-ie/sln294897/how-to-identify-which-generation-your-dell-poweredge-server-belongs-to?lang=en

Comparison of DL360 and DL380: 
https://racksimply.com/history-hpe-proliant-dl380/

Generations of DL380:
https://racksimply.com/history-hpe-proliant-dl380/

Lab Gopher:
https://www.labgopher.com/
https://www.reddit.com/r/homelab/comments/74gdwd/introducing_labgopher_a_better_way_to_find/