ANSI/TIA-942-A: Telecommunications Infrastructure Standard for Data Centers
This Standard specifies requirements for data center and telecommunication infrastructure including single tenant enterprise data centers and multi-tenant Internet hosting data centers. Specifications are provided for very small data centers to data centers that occupy multiple building floors or rooms.
ANSI/TIA-942-A “Telecommunications Infrastructure Standard for Data Centers” was developed by the TIA TR-42.1 Commercial Building Cabling Subcommittee and published in August, 2012. TIA-942-A incorporates the contents of the previous edition TIA-942 Standard and its two addenda that recognized 75Ω coaxial cabling for longer horizontal cabling runs originating from the MDA, provided revised requirements for temperature and humidity, recognized category 6A cabling , and revised the Tier references.