this post was submitted on 19 Jan 2025
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Open source Project Mini Rack aims to simplify tiny rackmount computing builds - Liliputing (liliputing.com)
submitted 1 week ago by Alphane_Moon to c/hardware
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[–] [email protected] 7 points 1 week ago* (last edited 1 week ago) (1 children)

These 10″ mini racks are about half the width of a typical 19″ rack, allowing them to fit in more places.

Man, my kneejerk reaction is that this is a mistake.

You have a massive amount of 19" rack infrastructure out there. If you go for, say, a 9"-ish rack, then you can potentially mount them side-by-side in existing racks. That extra inch they're using is going to make it a lot harder to play nice with existing stuff.

EDIT: Hmm. I don't know what motherboards those things use, but might be because microATX is 9.6" and maybe being able to use those is desirable. Mini-ITX is 6.7".

[–] [email protected] 2 points 1 week ago

Rack width includes the rails/ears. That's where the extra inch you're referring to comes from. The actual size of equipment you can slide between the rails and inside the rack, not including ears, is about 17.75" for 19" racks and about 8.75" for 10" racks. That is indeed half the width. Or at least within 0.125", but I don't know how accurate these numbers really are.

MicroATX very much cannot fit in this 10" rack.

Equipment that is "half-rack" or "half-width rackmount" tends to be primarily intended to mount two devices side by side on the same row of a 19" rack, but also can often be mounted in a 10" rack by attaching ears to both sides.