Requirements P2-7.1 and P2-7.2, which relate to data center and CCTV security, apply to 3DS Directory Server (DS) and 3DS Access Control Server (ACS) systems. As noted in the Overview section of Requirement P2-7, the DS and ACS systems are critical components of the 3DS infrastructure that require a secure facility with elevated physical security controls to restrict, manage, and monitor all physical access. The requirements in P2-7 are recommended, but not required, for locations where only a 3DS Server (3DSS) is present.  Refer to the PCI 3DS Core Security Standard for information about the different 3DS components.