Hi i got a chance to think about Data center design .But i searched and i got few notes to make good data center .
kindly update the details more about perfect data center 
- Enough space for expansion
- Plenty of network ports
- Sufficient network bandwidth
- Plenty of dedicated power sockets
- Should not be on the ground floor (risk of flooding + less secure)
- Fire suppression facilities + smoke alarms
- IP KVM for remote access
- Telephone (so the operator can call a support line while looking at the hardware)
- Pens + paper
- A label printer – label everything!
- A standard printer (nice to have)
- Spare network and power cables
- Air conditioning (also dehumidifies)
- Good UPS (with automated/controlled shutdown functionality)
- Sufficient power to run everything (and enough for expansion)
- Entrance security (preferably also with logging)
- Physical security (security on windows, entrance, etc.)
- Whiteboard (nice to have)
- Fireproof safe (for storing backup tapes, passwords and installation media)
- Good server racks – well maintained (cabling)
- Enough space to work comfortably behind the servers
- A table large enough to build/dismantle a server on (plus monitor, keyboard and mouse)
- At least 1 chair
- Tidy patch panel (especially if you patch to PC’s and telephones in the office)
- Good lighting
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