Short version of question:
Is there any reason a UPS (or any other device) should be at a particular level in a rack.
Long version (with explanation):
I have a full height rack with two servers, two Dell rail mount UPS units, a direct attached storage device, a tape drive, and some other items.
I want to reorder the items vertically. Is there any reason a UPS (or any other item for that matter) has to or should be at a certain position? The UPS is currently at the bottom, but I'm assuming this is just accidental.
The motivation for the re-ordering is that there's a mess of wires back there, but more importantly the two bottom items (UPS and Powervault) are much less deep then the items on top of them. As a result the cables that attach to the back of these items are almost impossible to reach.
I suspect the fact that I have this problem at all suggests that I'm doing something wrong.
I'd appreciate any info about:
- Whether there's any reason to have a UPS or any other device at a particular vertical level within a rack.
- Good tips and tricks for managing the mess of wires behind the rack. Some devices I have have cable arms but those seem to do more harm than good (wires "catch" when arm is being extended for some reason).