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We are moving to an office with a server closet that may not have sufficient depth to have a standard server rack. I found a vertical rack mount online (that mounts to the wall) that is 4U. Are there negative effects to mounting servers vertically instead of horizontally?

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Not in my experience. We have some Dell 1U poweredges mounted with a pair of attached to a wall at a couple of our small offices. – Zoredache Mar 12 '13 at 21:31
Apart from the venting mentioned below, has the server a CD/DVD drive that's used often? – ott-- Mar 15 '13 at 18:04
No CD/DVD drive – SlyMcFly Mar 20 '13 at 1:38
up vote 16 down vote accepted

Certain specific case designs may have issues with mounting in other-than-horizontal attitudes, but there isn't anything inherent to server cases that would suggest this is bad. Bad case-designs would have parts vibrating loose after long periods without gravity to retain them, but this shouldn't be a problem with a major server vendor case. Most blade-servers are vertical in my experience!

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I think he means to mount them vertically rotated along another axis then the one a blade server is rotated on, i.e., the front of the server pointing upwards to the ceiling. – Jens Timmerman Mar 15 '13 at 17:28
@Jens It shouldn't matter, same concepts he mention still apply. – Chris S Mar 15 '13 at 19:25

Check the venting path. Hot air should not get trapped in a 'dead end' at the 'top' of a horizontal case mounted vertically. If there is room for air to be sucked in and then blown out having passed over most of the PCBs you will be ok.

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There can be, but not usually - The thing is heat rises, so it is sometimes more difficult to suck the air in through the top then out through the bottom and you end up sucking in more hot air once it rises. Normally it won't be an issue - unless you have a really hot server. Then you have to make sure you have good air flow and cooling.

You can find some good wall mounted rack here:

Or you can go with an open rack, if you have the space since putting it in a closet makes the cabinet unnecessary - Here:

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Do you work for RackSolutions? If so, please be aware that self-promotion is allowed on ServerFault but you need be discrete and make a disclosure. – kce Apr 10 '13 at 17:25

It will try to suck cool air in from the front, and blow hot air out at the back. Since hot air rises I recommend mounting it with it's front facing the floor.

I've seen people mount servers this way (e.g. the folks at ) and they tell me there are no drawbacks to this, other then possible inconvenience when having to replace a component.

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GRCooling -> Amazing technology btw. – Andy M Oct 18 '13 at 7:12

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