For a future proof datacenter your Infrastructure should meet the latest standards, therefore plan & design a 10Gb system.

10GBase-T Copper UTP (10Gb) IEEE 802.3an
10GX Sytem @ Bandwidth > 625 MHz 

Points to consider:

• Alien Crosstalk influences and bending radius are to be considered in:
  • Design of the pathways (shielding, bending) use a dedicated ducting that guarantees bending radius limiting.
  • Installation practice (avoid bending, kinking)
• Limited distances: keep in mind that 1Gb only supports 55m.
  • Class E Augmented CAT6 (10GX) Max 100m
  • Class F Shielded Cable Max 100m
  • Class E Cat6 (1Gb) Max 55m

Upcoming: Limited Combustible Cabling (LCC)

• LCC = jacketed & insulated with fluoropolymer resin (Teflon®)
• 20min. before burning > factor 10 over typical plenum rated cable

Why: Limited Combustible Cabling (LCC)

• 95% fire damage in a DC = related to smoke, not flames !
• Cables are the No.1 primary fire hazard in a DC
• Install fire protection under floor or use LCC ?
• LCC also performs better (< degradation/loss) in hot cabinets