Camera layout and storage requirements for hotel security surveillance systems
I am David Zhou, an ELV/intelligent building systems expert, focusing on structured cabling, ELV systems and intelligent building design. Regarding camera placement and storage requirements for hotel security surveillance systems, this is a core part of hotel safety operations and directly affects guest safety, property protection and compliance. According to GB50314 "Standard for Design of Intelligent Building" and GB50348 "Technical Code for Engineering of Security and Protection System", hotel surveillance must cover key locations such as public areas, entrances/exits, corridors, parking lots, elevator lobbies and the front desk, while also addressing privacy protection (e.g., cameras are strictly prohibited in guest rooms and bathrooms). For storage, the code requires that video recordings be retained for no less than 30 days; HD cameras (e.g., 1080P and above) require storage capacity calculated based on bitrate, with redundant design.
**Camera Placement Key Points:**
1. **Full coverage of public areas**: In accordance with Article 5.2.3 of GB50348, the hotel lobby, elevator lobbies, corridors, restaurants, meeting rooms, etc. must be monitored without blind spots. For example, wide-angle cameras should be installed at the lobby entrance to cover the entire reception area; corridor camera spacing should not exceed 15 m to ensure personnel movement trajectories can be tracked.
2. **Entrances/exits and perimeter**: All external exits (including fire access routes) must be equipped with HD cameras with face recognition or license plate recognition capabilities. According to Article 6.3.2 of GB50314, infrared beam detectors or video analytics systems should be provided on the hotel perimeter to prevent illegal intrusion.
3. **Enhanced coverage of key areas**: Parking lots, valuables storage rooms, equipment rooms and finance rooms require additional PTZ (pan-tilt-zoom) cameras supporting remote control and intelligent analytics. For example, in a five-star hotel project, license plate recognition cameras were installed at the parking lot entrance and linked with barriers to enable automatic vehicle access and logging.
4. **Privacy and compliance**: Strictly avoid installing cameras in guest rooms, bathrooms and changing rooms. According to the Personal Information Protection Law and Article 5.2.5 of GB50348, monitored areas must be clearly marked, e.g., "Video surveillance in operation in this area", and encrypted data transmission must be ensured.
**Storage Requirements:**
1. **Storage capacity calculation**: Taking a 2-megapixel camera (1080P, H.265 encoding) as an example, the bitrate is approximately 2-4 Mbps. The 30-day storage capacity formula: single-channel capacity (TB) = bitrate (Mbps) × 86400 s × 30 days / 8 / 1024 / 1024. For example, at a 4 Mbps bitrate, 30 days require approximately 1.3 TB. 50 cameras require approximately 65 TB; NVR or centralized storage is recommended, configured with RAID5 redundancy.
2. **Redundancy and backup**: According to Article 6.4.3 of GB50348, the storage system must support dual-machine hot standby or cloud backup to prevent single points of failure. For example, a hotel chain lost data due to a hard drive failure and subsequently upgraded to RAID6 plus off-site backup to ensure recording integrity.
3. **Access and encryption**: Storage devices must have permission management so that only authorized personnel can retrieve recordings. Data transmission shall use HTTPS or VPN encryption to prevent leakage. According to the Cybersecurity Law, video data must be retained for at least 30 days and support rapid retrieval.
**Case Sharing**: In a resort hotel project, we deployed 120 cameras in accordance with GB50314 requirements: 4K panoramic cameras in the lobby, 12 m corridor spacing, license plate recognition cameras in the parking lot, and a 24-bay NVR (RAID6) for storage with a total capacity of 120 TB, meeting 30-day storage. During construction, we adjusted the angles of some cameras to avoid obstructing fire sprinklers, and passed acceptance through actual measurement.
**Summary**: Hotel surveillance placement must balance security and privacy, and storage must meet the 30-day retention period with redundancy. Strictly following GB50348 and GB50314, combined with on-site optimization, can improve security and O&M efficiency.
The above is for reference. The actual project situation still needs to be further evaluated and implemented in combination with specific operating conditions, site conditions and other factors.