Entrance Rooms

Class 3 and higher data centers shall have separate entrance rooms and the entrance room if separate from the computer room, shall be accessed without going through the computer room.

Class 2 and lower data centers may have a single entrance room. The entrance rooms should be attached with the computer room.

Entrance room should consider the cable termination hardware, protectors, splicing hardware, cabling pathways, space for cable pulling equipment, carrier equipment, electrical equipment, air conditioning equipment, security equipment, building automation systems and telecommunications equipment.