one of the key things to do in a 'serious' datacenter is separate the fiber from the power.
this is why serious facilities have a dedicated channel of yellow plastic overhead fiber tray which contains ONLY 1.6mm or 2.0mm jacketed 9/125 singlemode fiber, with nice smooth corners and spigots on it coming down above racks.
and then the AC power is in conduit and long rectangular metal enclosures.
and the -48VDC cabling on steel ladder rack, often with waxed string lacing if it was done by people who are being serious about it.
on a per rack cabinet level it's also really important to pick one vertical side for your power cables, and data cables vertically up the OTHER side, and stick to it consistently.
this is why serious facilities have a dedicated channel of yellow plastic overhead fiber tray which contains ONLY 1.6mm or 2.0mm jacketed 9/125 singlemode fiber, with nice smooth corners and spigots on it coming down above racks.
and then the AC power is in conduit and long rectangular metal enclosures.
and the -48VDC cabling on steel ladder rack, often with waxed string lacing if it was done by people who are being serious about it.
on a per rack cabinet level it's also really important to pick one vertical side for your power cables, and data cables vertically up the OTHER side, and stick to it consistently.