How tall can a server rack be?

55U, Open Frame Rack

Server racks come in many different sizes. Some are as short as a or more are in use, that translates into lots of extra equipment space.

50U Open Frame Racks may be bayed together with two, 55U Racks, for example. All four server racks may be equipped with top Air dams, and the rack on each end also may have a side Air Dam installed. Air Dams act like an eave on top of the rack, sticking out 5″ – 10″. The side dams also protrude out 5″ – 10″.  Air Dams are used in tandem with floor grates to improve air containment. These racks may also have optional, side panels for enclosing the two ends of the bay of racks.



On the flip side

The front of a server rack loaded with equipment looks cool, but the back of the rack is where things can get a little hairy, and organization is key to keeping your sanity. That’s why it’s important that a rack have vertical cable bar options, a place to mount vertical PDUs and in some cases.

See Open Frame, 55U Racks for sale.

Network switches, patch panels, servers

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One Response to “How tall can a server rack be?”

  1. Nate Says:

    In telecom environments, two-post racks up to 11’6″ were common. Things seem to have standardized at 7′ or 7’6″ these days. Of course, all those use the one-inch Western Electric hole spacing (and 12-24 threaded screws) that data guys probably hate anyway…

    …but can you imagine walking down the aisle in an 11’6″ environment, relays and repeater cards stretching out of reach? Rolling ladders (affixed to ladder-track, so there’s no danger of hitting the equipment) were standard in those aisles, complete with a ladder-seat that would clip onto the steps and give you a place to perch while working aloft. And in the days before electronic switching, there was no reason to cool the offices! Datacenter kids are so lucky these days…

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