Enterprise — Data centers
Small and mid-size rooms, often CRAC or CRAH.
Enterprise is a segment of Data centers. Below are the systems and equipment FacilityOS covers for it, filtered from the Data centers solution.
How FacilityOS helps
- Chillers, cooling towers, CRAHs and liquid-cooling CDUs with N+1 redundancy headroom.
- 2N UPS, battery strings with per-jar resistance trends, ATS and generators; protection relays, fault recorders and PQ analyzers read-only over IEC 61850.
- DCIM: rack elevations, A/B power-chain tracing, capacity, rack power budgets and per-customer billing.
- PUE and energy reports.
Systems and equipment
Core: every site of this kind has it. Common: most sites have it. Optional: depends on the site.
Cooling plant
The plant is the largest non-IT load in PUE.
| Equipment | Level | Points worth watching | Notes |
|---|---|---|---|
| Chiller | Core | CHW supply temp · CHW return temp · Load · Power draw | |
| Pump | Core | Running · Speed · Differential pressure | |
| Heat-recovery chiller / heat pump | Optional | Hot water supply temp · Chilled water supply temp (recovery side) · Power draw · Combined COP | Heat recovery displacing boiler gas — one of the main decarbonization levers. |
| Plate heat exchanger | Common | Secondary supply temp · Approach · Primary pressure drop | |
| Pressurization / expansion unit | Common | System pressure · Low pressure alarm · Make-up today | |
| Chilled-water storage tank | Optional | State of charge | |
| Dry cooler / adiabatic cooler | Common | Leaving fluid temp | |
| Cooling tower chemical treatment | Common | Conductivity · Chemical drum low | |
| Side-stream filter | Optional | Filter differential pressure | |
| Vibration / condition sensor | Common | Velocity RMS |
Data hall air
Rack inlet temperature against the ASHRAE TC9.9 recommended envelope (typically 64.4–80.6°F / 18–27°C).
| Equipment | Level | Points worth watching | Notes |
|---|---|---|---|
| CRAH | Core | Supply air temp · Return air temp · Fan speed | |
| CRAC (DX) | Core | Supply air temp · Return air temp · Return humidity · Compressor capacity · High head pressure | |
| Rack PDU | Core | Rack power · Highest phase current · Rack inlet temp · Rack inlet humidity | Rack inlet T/RH often comes from rPDU probes. |
| Split DX / condensing unit | Common | Suction pressure · High-pressure trip | |
| Humidifier | Common | Controlled humidity · Cylinder / nozzle service | |
| In-row cooler | Common | Supply air temp · Leak | |
| Aisle containment | Common | Door open | |
| Rack environment sensor | Core | Inlet temp (hottest) |
Liquid cooling
AI racks throttle or trip within minutes without liquid cooling.
| Equipment | Level | Points worth watching | Notes |
|---|---|---|---|
| Rear-door heat exchanger | Common | Water supply temp · Leaving air temp · Water flow · Leak detected | |
| Immersion cooling tank | Optional | Fluid temp · Fluid level |
Power, UPS & batteries
2N or distributed redundancy; batteries are the last line of defense.
| Equipment | Level | Points worth watching | Notes |
|---|---|---|---|
| Medium-voltage switchgear | Core | Bus voltage · Incoming current · Real power · Breaker closed · Protective trip · Relay trouble | Monitor only — never operate breakers. |
| Low-voltage switchgear | Core | Bus voltage · Load current · Real power · Power factor · Current THD · Breaker trip | |
| Power transformer | Core | Top-oil temp · Winding temp · Load · Gas / sudden-pressure alarm · Over-temperature alarm | |
| UPS | Core | Load · Battery runtime · On bypass | SNMP v3 (UPS-MIB); A and B feeds. |
| UPS battery string monitor | Core | String voltage · Lowest jar voltage · Highest jar voltage · Highest jar internal resistance · Highest jar temp · State of charge | Per-jar resistance trending (one of the maintenance practices in IEEE 1188). |
| Battery room | Common | Room temp · Relative humidity · Hydrogen alarm | |
| Generator | Core | Running · Output power · Fuel tank level · Starting battery voltage · Not in AUTO | |
| Transfer switch | Core | Fed from source B | |
| PDU | Core | Output power | |
| Power monitoring | Core | IT load · Total facility power · PUE (power usage effectiveness) | EPMS roll-up, read-only. |
| Power quality meter | Common | Voltage THD · Current THD · Voltage sags today · Sag / interruption event | Voltage sags are a common hidden cause of trips. |
| Static transfer switch | Core | On alternate source · Sources out of sync | |
| Battery cell monitoring | Common | Highest cell resistance · Cell alarm | |
| -48 V DC power plant | Common | DC bus voltage · AC input lost | |
| Ring main unit | Common | SF6 low · Fault passage indicator | |
| Generator paralleling switchgear | Common | Sets online · Not in AUTO | |
| Diesel fuel system | Core | Bulk tank level · Runtime at full load · Leak alarm | |
| Load bank | Optional | Applied load · Exhaust temp | |
| Busway / cable temperature (DTS) | Optional | Hottest point | |
| Fuel cell | Optional | Output · Fault | |
| Active harmonic filter (APF) | Common | After current THD · Unit load · Modules in fault · Fan fault | |
| Static var generator (SVG / STATCOM) | Common | PF after · Unit load · Modules in fault | |
| Isolation / K-rated transformer | Common | Winding temp | |
| Transformer DGA monitor | Common | Hydrogen · Acetylene | |
| Winding temperature monitor | Common | Winding hot spot | |
| Partial discharge monitor | Common | Discharge magnitude | |
| Switchgear wireless temperature | Common | Hottest point · Phase difference | |
| Arc-flash protection relay | Common | Arc trip · Protection not ready | |
| Residual current monitor (RCM) | Common | Largest residual current · Residual current alarm | |
| Surge protective device (SPD) status | Common | SPD failed · Backup breaker open | |
| Flywheel / rotary UPS | Optional | Flywheel speed · Discharging · Bearing temp | |
| Server BMC (Redfish / IPMI) | Optional | Power draw · PSU redundancy lost |
Life safety Monitor only
Very early smoke detection and leak location. Monitor only.
| Equipment | Level | Points worth watching | Notes |
|---|---|---|---|
| Fire alarm panel | Core | Fire alarm · Supervisory signal · Trouble signal | Monitor only (NFPA 72). |
| Aspirating smoke detector | Core | Smoke obscuration (%/ft) · Alert · Action · Fire 1 · Airflow fault | |
| Sprinkler riser | Common | Riser pressure · Waterflow alarm · Valve tamper | |
| Leak detection | Common | Leak detected · Leak location (from start) | |
| Fire / smoke damper | Core | Closed · Position fault · Days since test | |
| Clean-agent suppression panel | Core | Discharged · Cylinder pressure low | |
| Pre-action / dry-pipe valve | Common | Air pressure · Valve tripped · Low air | |
| Water mist system | Optional | Pump unit not ready · Released |
Security & video Monitor only
Camera and door status, and video linkage: cameras are linked to areas, devices and alarm rules; on an alarm the gateway takes an ONVIF snapshot and attaches it to the alarm, with a live-view link to the NVR/VMS. Core never contacts a camera.
| Equipment | Level | Points worth watching | Notes |
|---|---|---|---|
| Video camera | Common | Online · Recording · Motion detected · Video analytics alarm · Tamper (blocked or moved) | Status via the VMS (Milestone, Genetec…); on an alarm the gateway takes an ONVIF snapshot and attaches it to the alarm — Core never contacts a camera. |
| Access-controlled door | Core | Door open · Door held open · Door forced | Data hall and cage access. |
| Intrusion alarm panel | Common | Intrusion alarm · Tamper | |
| Perimeter intrusion detection | Common | Perimeter alarm | |
| Visitor management | Optional | Visitors on site · Watch-list hit | |
| Network switch (SNMP) | Common | Ports down · PSU fault | |
| Smart rack lock | Optional | Rack open · Forced open |
Life-safety equipment (fire alarm, gas detection, emergency power transfer) and protection devices are monitored only. FacilityOS never sends them commands.
Standards and compliance
| Standards and compliance | Notes |
|---|---|
| ASHRAE TC9.9 Thermal Guidelines | Thermal guidelines for data processing environments; recommended envelope typically 64.4–80.6°F (18–27°C). |
| ANSI/TIA-942 | Telecommunications infrastructure standard for data centers, including rated availability levels. |
| Uptime Institute Tier Standard: Topology | Tier I–IV topology classification. |
| NFPA 75 | Fire protection of information technology equipment. |
| NFPA 76 | Fire protection of telecommunications facilities. |
| NFPA 70 (NEC) Article 645 | Electrical provisions for information technology equipment rooms. |
| ISO/IEC 30134-2 | Definition and calculation of PUE. |
| IEEE 1188 | Recommended practice for maintenance, testing and replacement of VRLA batteries. |
| NFPA 855 | Installation requirements for Li-ion UPS / energy storage. |
| IEC 62443 | Industrial automation security (OT network zoning). |
Standards are listed with what they cover; numeric values are typical figures, not requirements for every site. FacilityOS supports your compliance work; it does not certify a site.
Segments of Data centers
How we deliver
We can take a Data centers project from survey and design through procurement, installation, commissioning and training — all of it, or only the stages you need.