Why a Well-Designed IBMS Is Critical for Data Centres and Control Rooms

In most control rooms and data centres, attention goes to the visible systems: the video wall, the servers, the network and the operator software. What usually gets far less attention is the system that keeps that room safe, cool, dry and powered: the Integrated Building Management System, or IBMS. It is often the most ignored and least used system in the building, even though an always-on control room cannot run for long without it.

This matters more every year. In a Rajya Sabha reply in December 2025, the Ministry of Electronics and IT said industry estimates put India’s cloud data centre capacity at about 1,280 MW, expected to grow four to five times by 2030^[1]. City Integrated Command and Control Centres (ICCCs), utility SCADA rooms, police control rooms and bank operations centres all depend on the same kind of critical rooms. You can read more about how these rooms have grown in The Evolving Role of Control Rooms in Modern Cities.

Why the building systems decide uptime

Uptime Institute’s outage research shows how often the physical infrastructure is to blame. In its 2025 global survey, power was the primary cause of 45% of operators’ most recent impactful outages, and cooling accounted for 14%^[2]. The same report notes that the share of outages attributed to fire suppression systems rose by six percentage points year on year, which Uptime links partly to wider deployment and accidental activation^[2].

People are part of the picture too. In Uptime’s 2026 resiliency survey, 92% of respondents said human error was at least a minor contributor to their most recent impactful outage. Among the most common ways human error contributed, 59% cited staff failing to follow procedures^[2].

What a data centre or control room IBMS should cover

Fire detection and alarm

The base layer is an addressable fire alarm system, designed to NFPA 72^[4] or, in India, to IS 2189 and Part 4 (Fire and Life Safety) of the National Building Code 2016^[8][9]. NFPA 75 and NFPA 76 add requirements specific to IT equipment areas and telecommunications facilities^[6][7]. Addressable devices tell the operator exactly which detector has gone into alarm, instead of just a zone.

For server rooms with high airflow, aspirating smoke detection (VESDA-type) is the usual addition. Honeywell describes VESDA as continuously drawing in air samples and analysing them with laser-based sensors. It covers a detection range from 0.001% to 20% obscuration per metre and offers four configurable alarm thresholds^[11]. Sector-addressable models can tell apart separate sampling pipes, for example different aisles in a data hall^[12]. Our earlier post on the right design engineering of fire alarm systems covers the design basics.

Gas-based suppression

Water sprinklers and live electronics do not mix well, so critical rooms usually use clean agent or inert gas suppression designed to NFPA 2001. The standard covers everyone who purchases, designs, installs, tests, inspects, operates and maintains these systems “so they will function as intended when needed”^[5]. Common agents include FK-5-1-12, HFC-227ea and inert gas blends. Honeywell, for example, states that its FK-5-1-12 systems can reach extinguishing levels within 10 seconds, with zero ozone depletion potential and an atmospheric lifetime of about five days^[10].

Water leak detection

Chilled-water pipes, condensate trays, precision air-conditioning units and rooftop leaks are all real risks under a raised floor. Sensing cables run along these routes and raise an alarm at the first sign of moisture. nVent, for example, says its TraceTek cables detect, locate and communicate small leaks before major problems develop, and can be integrated into building management systems for central visibility^[15].

Rodent repellent systems

Rodents chew cables, and the damage can be serious. In 2023, the BBC reported that nesting rats chewed through ducting, outer casing and multiple cables in Openreach’s Tring area network, leaving thousands of homes and businesses without broadband^[16]. Electronic rodent repellent systems in false ceilings, raised floors and cable trenches are a low-cost layer of protection. They work best when their health status is monitored.

Temperature and humidity sensors

ASHRAE TC 9.9’s 2021 thermal guidelines recommend 18 to 27°C at the IT equipment air inlet for Classes A1 to A4, with humidity limits defined by dew point and relative humidity^[13]. Sensors should sit at rack inlets, not just near the CRAC return air, so that hot spots show up before equipment starts throttling or tripping.

Air quality sensors

Dust and corrosive gases damage electronics slowly. ASHRAE’s contamination guidelines name copper creep corrosion and the corrosion of silver metallisation as two common failure modes. They recommend copper and silver reactivity rates below 300 Å per month, along with suitable filtration of room and outdoor air^[14]. In control rooms, CO₂ and particulate monitoring also help, because operators spend long shifts in those rooms.

BMS: cooling, power and UPS

The BMS layer monitors precision cooling units, chillers, UPS, batteries, generators, PDUs and switchgear. OEM platforms such as Schneider Electric’s EcoStruxure IT combine power, environmental monitoring and predictive analytics across multi-vendor equipment^[17]. TIA-942-C, the data centre infrastructure standard published in May 2024, covers power, cooling, fire protection, safety and physical security together^[18].

Energy management

Power Usage Effectiveness (PUE) is defined in ISO/IEC 30134-2. It tracks how much energy goes to IT equipment compared with the total facility, and the standard sets measurement categories and reporting rules^[19]. ISO 50001 adds the management discipline: an energy policy, targets, data-driven decisions, measuring results and continual improvement^[20]. Without metering on the IBMS, neither is possible.

Integration is where the value is

Installing each of these subsystems is the easy part. The value comes from integrating them:

• One dashboard: fire, suppression, leak, environment, power and cooling alarms on one screen, mapped to the floor plan, so operators do not have to check six panels.
• Alarm correlation: a temperature rise, a CRAC fault and a UPS alarm in the same room are shown as one incident with a likely cause, rather than three unrelated beeps.
• Cause and effect: a typical sequence runs from an early VESDA alert, to investigation, to a confirmed fire alarm, then a suppression pre-discharge countdown. During the countdown, the system shuts down HVAC and closes dampers to hold the agent concentration, and access-controlled doors release for safe exit. The exact sequence must follow the approved design and the local fire authority’s requirements.
• Alerts to the right people: SMS, email or app notifications with escalation, so a 2 a.m. leak alarm reaches someone who can act.
• Trend data: temperature, humidity, battery and energy trends show slow failures long before they become outages.
• Maintenance: run-hours, filter status, cylinder pressure and test dates feed a maintenance schedule instead of a forgotten logbook.

For the control room side of the same picture, see how video walls are transforming India’s smart city control rooms. The IBMS view belongs on that wall as well.

How “installed but ignored” systems fail

• Alarms muted: nuisance alarms are silenced or bypassed instead of being fixed, so a genuine alarm is missed.
• Sensors not calibrated: temperature, humidity and leak sensors drift or go offline, and nobody notices.
• No integration: each vendor’s panel sits in a corner with its own software, and no one correlates events across them.
• No ownership: IT assumes facilities owns it, facilities assumes the vendor does, and the annual maintenance contract lapses.
• Cause and effect never tested: the suppression interlocks with HVAC and doors were commissioned once and never tested again after changes to the room.
• Data never used: energy meters are installed, but PUE is never calculated or reviewed.

A practical IBMS checklist

Subsystem	What good looks like	Check at least
Fire alarm (addressable + aspirating)	Device-level addresses, alarm thresholds tuned to the room, events on the IBMS	Periodic tests as per NFPA 72 / IS 2189 and the maintenance contract
Gas-based suppression	Agent and quantity per NFPA 2001 design, room integrity maintained, interlocks documented	Cylinder pressure and weight, room integrity, cause-and-effect tests
Water leak detection	Cable under CRAC units, pipes and trays, leak location shown on the floor plan	Functional test and cable continuity
Rodent repellent	Coverage of raised floor, false ceiling and trenches, health status monitored	Unit health and any signs of rodent activity
Temperature and humidity	Sensors at rack inlets, alarms aligned to the ASHRAE envelope	Calibration against a reference instrument
Air quality	Particulate, CO₂ and, where needed, corrosion monitoring	Filter changes and trend review
BMS (cooling, UPS, power)	All CRAC, UPS, DG and PDU points mapped with clear alarm priorities	Alarm review and point-to-point checks after changes
Energy management	Metering to calculate PUE, ISO 50001-style targets	Monthly PUE and energy review
Integration and ownership	One dashboard, escalation matrix, named owner, standard procedures	Drills and a quarterly IBMS health review

Trisim’s view

In Trisim’s view, the IBMS should be designed alongside the control room from day one, not added at the end as a list of separate packages. It should also have a named owner once the room is live. Most of the problems we see in critical rooms are not missing equipment but missing integration, testing and follow-through. A well-designed IBMS that operators actually use is one of the cheapest ways to protect an always-on control room.

Trisim Global Solutions designs and integrates control rooms and building systems, including fire, suppression and IBMS integration. To discuss an IBMS review for your data centre or control room, contact Trisim Global Solutions.

Protecting a data centre or critical equipment room? Ask Trisim Global Solutions about Honeywell gas suppression solutions.

Sources

1. Press Information Bureau (MeitY), “Cloud data centre capacity in India estimated to grow 4 to 5 times by 2030”, Rajya Sabha reply by MoS Shri Jitin Prasada, 12 December 2025. pib.gov.in
2. Uptime Institute, “Annual outage analysis 2026: The causes and impacts of IT and data center outages” (keynote report). uptimeinstitute.com (PDF)
3. Uptime Institute, “Uptime Announces Annual Outage Analysis Report 2025”, press release, 6 May 2025. uptimeinstitute.com
4. NFPA 72, National Fire Alarm and Signaling Code (2025 edition). nfpa.org
5. NFPA 2001, Standard on Clean Agent Fire Extinguishing Systems (2025 edition). nfpa.org
6. NFPA 75, Standard for the Fire Protection of Information Technology Equipment (2024 edition). nfpa.org
7. NFPA 76, Fire Protection of Telecommunications Facilities (2024 edition). nfpa.org
8. Bureau of Indian Standards, IS 2189:2008, Selection, installation and maintenance of automatic fire detection and alarm system: Code of practice. services.bis.gov.in
9. Bureau of Indian Standards, National Building Code of India 2016 (Part 4: Fire and Life Safety). bis.gov.in
10. Honeywell Buildings India, Clean Agent Fire Suppression System (FK-5-1-12 and HFC-227ea). honeywellbuildings.in
11. Honeywell, Advanced Detection (VESDA aspirating smoke detection). honeywell.com
12. Xtralis (Honeywell), VESDA-E VES Aspirating Smoke Detector (Sector Addressable ASD). xtralis.com
13. ASHRAE TC 9.9, 2021 Equipment Thermal Guidelines for Data Processing Environments, Reference Card (5th edition). ashrae.org (PDF)
14. ASHRAE TC 9.9, 2009 Particulate and Gaseous Contamination Guidelines for Data Centers. ashrae.org (PDF)
15. nVent RAYCHEM, TraceTek Leak Detection for data centres. nvent.com
16. BBC News, “Rats cause Tring Openreach broadband outage by chewing cables”, 2 August 2023. bbc.co.uk
17. Schneider Electric, EcoStruxure IT monitoring and management solutions. se.com
18. TIA, ANSI/TIA-942-C Telecommunications Infrastructure Standard for Data Centers (May 2024). tiaonline.org
19. ISO/IEC 30134-2:2026, Data centres key performance indicators, Part 2: Power usage effectiveness (PUE). iso.org
20. ISO, ISO 50001 Energy management. iso.org