A data center, comprising: a first datacenter POD including a first plurality of rows of cabinets (1a, 1b) where each of said first plurality of rows of cabinets (1a, 1b) are adjacent to and share a first cold aisle, said first cold aisle including a first temperature and a first pressure set point, the first cold aisle being within a first cold aisle containment enclosure that provides physical separation between the cool air and the cabinet exhaust air; a second datacenter POD including a second plurality of rows of cabinets (1c, 1d) where each of said second plurality of rows of cabinets (1c, 1d) are adjacent to and share a second cold aisle, said second cold aisle including a second temperature set point and a second pressure set point, the second cold aisle being within a second cold aisle containment enclosure that provides physical separation between the cool air and the cabinet exhaust air; a cold air supply (11a, 11b) supplied via an underfloor cold air supply plenum connected to both said first cold aisle and said second cold aisle, said cold air supply providing a cold air flow having both a temperature and a volumetric flow rate associated therewith; a first active damper floor tile connected to and between said first cold aisle and said underfloor cold air supply plenum; a second active damper floor tile connected to and between said second cold aisle and said underfloor cold air supply plenum; a controller connected to said cold air supply (11a, 11b), said first active damper floor tile, and said second active damper floor tile, said controller to: control said temperature of said cold air flow, control said first active damper floor tile based on pressure sensor data received from a first containment pressure sensor located in the first cold aisle containment enclosure to approximately achieve said first pressure set point in said first cold aisle by partitioning said volumetric flow rate, and control said second active damper floor tile based on pressure sensor data received from a second containment pressure sensor located in the second cold aisle containment enclosure to approximately achieve said second pressure set point in said second cold aisle by partitioning said volumetric flow rate. a first datacenter POD including a first plurality of rows of cabinets (1a, 1b) where each of said first plurality of rows of cabinets (1a, 1b) are adjacent to and share a first cold aisle, said first cold aisle including a first temperature and a first pressure set point, the first cold aisle being within a first cold aisle containment enclosure that provides physical separation between the cool air and the cabinet exhaust air; a second datacenter POD including a second plurality of rows of cabinets (1c, 1d) where each of said second plurality of rows of cabinets (1c, 1d) are adjacent to and share a second cold aisle, said second cold aisle including a second temperature set point and a second pressure set point, the second cold aisle being within a second cold aisle containment enclosure that provides physical separation between the cool air and the cabinet exhaust air; a cold air supply (11a, 11b) supplied via an underfloor cold air supply plenum connected to both said first cold aisle and said second cold aisle, said cold air supply providing a cold air flow having both a temperature and a volumetric flow rate associated therewith; a first active damper floor tile connected to and between said first cold aisle and said underfloor cold air supply plenum; a second active damper floor tile connected to and between said second cold aisle and said underfloor cold air supply plenum; a controller connected to said cold air supply (11a, 11b), said first active damper floor tile, and said second active damper floor tile, said controller to: control said temperature of said cold air flow, control said first active damper floor tile based on pressure sensor data received from a first containment pressure sensor located in the first cold aisle containment enclosure to approximately achieve said first pressure set point in said first cold aisle by partitioning said volumetric flow rate, and control said second active damper floor tile based on pressure sensor data received from a second containment pressure sensor located in the second cold aisle containment enclosure to approximately achieve said second pressure set point in said second cold aisle by partitioning said volumetric flow rate. control said temperature of said cold air flow, control said first active damper floor tile based on pressure sensor data received from a first containment pressure sensor located in the first cold aisle containment enclosure to approximately achieve said first pressure set point in said first cold aisle by partitioning said volumetric flow rate, and control said second active damper floor tile based on pressure sensor data received from a second containment pressure sensor located in the second cold aisle containment enclosure to approximately achieve said second pressure set point in said second cold aisle by partitioning said volumetric flow rate.