: The definition has been broadened to include battery energy storage systems (BESS) , natural gas, and hydrogen fuel cells as valid standby power technologies. 4. Infrastructure Subsystems & Ratings
"Data Center Tier Classification: Understanding TIA-942-C Standards for Reliable and Efficient Data Center Operations" tia942c pdf full
TIA-942-C places a heavier emphasis on physical security requirements for the data center site, including: : The definition has been broadened to include