Constructed to a high specification to provide insulation from egress of chilled air and ingress of heat, special considerations need to be given to communications rooms. Typically structures will be slab to slab, rather than being built on the raised access floor and to the underside of the suspended ceiling. The build integrity of the structure will need to be strengthened if you intend to install a gas fire suppression system.
It is important to understand the load required of the servers and active equipment together with air conditioning equipment. A dedicated supply will be required and, for more demanding applications, this could be a 3-Phase supply. A local distribution board will provide individual circuits for the power distribution units and racks.
Uninterruptible Power Supplies (UPS)
Not an option but a must, a UPS will not only provide back-up power in the event of a power outage but also provide a constant output on the delivery side, removing power spikes. Depending on the autonomy (up time) required, units can be large and heavy so floor loading may need to be considered.
Gas Fire Suppression System
This is an ozone friendly, gas based, automated fire suppression system. Should a detector register smoke and or heat then gas is released from pressurised gas bottles in seconds to suffocate a fire before it can take hold and cause any significant damage. A must for data centres.
Management of air circulation is a critical factor requiring hot and cold aisles. The cold aisles deliver chilled air to one side of the racks, which is then drawn through the racks cooling the servers and then the hot air is extracted via the hot aisle. Specialist underfloor air conditioning systems of bespoke design may be required.
Your most valuable assets are your staff and your data, look after both! A communications room should be physically secure and there should be no unauthorised access. CCTV should provide surveillance of the communications room entrance and ideally internally within the room. Off-site backups should complement on-site back-ups. Fire walls and other network security will protect from Internet crime.