k) System rooms must be kept clean and free from dust and dirt. System rooms and supporting equipment must not be located in basement areas, in places prone for flooding and water seepage.
l) Water detectors must be used and adequate control measures should be made if the area is prone to moisture and water seepage.
31.5 Monitoring
a) In addition to access control mechanisms, suitable automatic intruder alert mechanisms should be installed at all access points to critical information processing facilities, where applicable. Intruder alerting systems are to be configured to alert if anyone tries to bypass the access control system.
b) Continuous monitoring systems including Close circuit TV (CCTV) are to be installed to monitor critical facilities like Data Center on a 24x7 basis.
c) Backup must be performed on all security monitoring systems and CCTV images and videos must be included as an audit trail.