200-Camera IP Surveillance System Across 12 Hospital Floors Achieving Zero Network Downtime

The hospital's existing CCTV infrastructure dated from 2014: a single centralised DVR system with 24 cameras, most of which were analog box-type cameras installed in ground-floor corridors and the main reception area. The cameras provided 360i resolution at best, and many had deteriorated to the point where the footage was essentially unusable in low light — a significant problem in a hospital where many corridors are dimmed at night to reduce disruption to patients.

Coverage was profoundly inadequate for a 12-floor, 300-bed facility. Floors 4 through 12 had no cameras whatsoever. The pharmacy on Floor 2, where high-value medications including controlled drugs were stored and dispensed, had a single camera pointed at the dispensing counter — but not at the medication storage area behind it. The nursing stations on all medical wards were uncovered. The car park in the basement and the ambulance bay at the building's rear had no cameras at all, leaving two areas where nighttime security incidents were most likely entirely unmonitored.

Staff safety was an escalating concern. Nursing staff working night shifts on the upper floors had raised the issue of security in the absence of any camera coverage or remote monitoring capability at the security management committee. Two incidents in the 18 months preceding the project — a verbal altercation between a patient's family members and nursing staff on Floor 7, and a theft from a nurse's locker on Floor 9 — had both occurred in areas with no camera coverage, leaving the hospital with no evidence for either the internal investigation or the police report.

The hospital's medical director raised the surveillance gap in the context of the JCI pre-assessment preparation. JCI standards require hospitals to maintain a security management plan that includes surveillance of the physical environment, particularly in high-risk areas such as pharmacies, ICUs, infant and neonatal wards, and emergency departments. The existing 24-camera system was evaluated by the JCI consultant as wholly inadequate for pre-assessment purposes.

Operationally, the existing DVR system was managed by the security desk on the ground floor, which had no remote viewing capability. If security staff needed to view an upper floor, they were required to leave the ground floor security station unattended — or rely on a nurse to describe what was happening verbally over the phone. The Head of Security described the situation as "making security decisions based on telephone descriptions rather than evidence."

SSAL deployed a fully IP-based surveillance system covering all 12 floors of the hospital, including all clinical areas, public spaces, staff areas, and external zones.

Camera Hardware — Hikvision 4MP AcuSense: 200 Hikvision DS-2CD2143G2-I 4MP AcuSense dome cameras were deployed across the 12 floors. The AcuSense model was specified for its H.265+ compression (reducing storage by approximately 60% versus H.264), IR illumination to 40 metres for night coverage, IK10 vandal-resistant housing, and AcuSense false-alarm filtering that distinguishes human and vehicle movement from environmental triggers. This false-alarm filtering was specifically important for clinical environments, where frequent movement of patients, trolleys, and equipment in corridors could otherwise generate excessive motion-detection events.

Camera placement was designed with the hospital's floor plans to achieve specific clinical security objectives. Each nursing station received a camera providing a view of the nurse call station and medication cart area. Each floor's corridor received cameras at both ends and at the mid-point, providing overlapping coverage with no blind spots. The pharmacy received four cameras: dispensing counter, controlled drug storage, general storage, and exit. The emergency department received six cameras. The ambulance bay, car park (basement and street level), and all three stairwells received dedicated outdoor or corridor cameras. Infant and maternity wards received cameras at entry points only — not inside patient rooms — to balance security with patient privacy.

NVR Storage — Hikvision DS-9632NI-I16 with RAID 5: Four Hikvision DS-9632NI-I16 32-channel NVRs were installed in the hospital's server room, each configured with 6 x 8TB hard drives in RAID 5 providing approximately 40TB usable storage per NVR — sufficient for 90-day continuous recording of 50 cameras at 4MP/10fps. RAID 5 means that a single drive failure does not interrupt recording or lose footage; the system continues operating and alerts the IT administrator to replace the failed drive. Each NVR is powered through a dedicated APC Smart-UPS 3000VA, ensuring recording continuity during the hospital's frequent short power interruptions (generator switchover takes 8-12 seconds).

Dedicated Network Infrastructure: A dedicated surveillance VLAN (VLAN 30) was created on the hospital's existing fiber backbone, physically isolated at Layer 2 from the clinical application VLAN (VLAN 10) and the administrative network (VLAN 20). Hikvision DS-3E0552P-E 48-port PoE+ switches were installed on each floor to power cameras and carry surveillance traffic. DSCP QoS marking ensures that VLAN 30 traffic has guaranteed bandwidth allocation and that any bandwidth saturation event on the surveillance network cannot propagate to the clinical network. The IP addressing and routing configuration was reviewed and approved by the hospital's IT administrator before implementation.

Central Monitoring Station: A 4-monitor security workstation was installed at the ground floor security desk, running iVMS-4200 VMS software. The layout allows a single security officer to monitor up to 64 cameras simultaneously across a 4x4 grid, with easy access to full-screen views for specific floors or cameras. Remote access from the Head of Security's management workstation (on Floor 3) allows management-level review of footage without occupying the security desk. Mobile app access (iVMS-4500) was configured for the Head of Administration and the Medical Director for after-hours incident response.