القائمة
Data center construction guidance for mission-critical facilities including power, cooling, redundancy, and commissioning.
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| name | data-center-construction |
| description | Data center construction guidance for mission-critical facilities including power, cooling, redundancy, and commissioning. |
Quick reference for construction project managers working on data center projects. Covers facility types, electrical and mechanical systems, commissioning, and compliance.
| Type | Typical Size | Power Capacity | Key Characteristics |
|---|---|---|---|
| Enterprise | 5,000-50,000 SF | 500kW-5MW | Single-tenant, internal use |
| Retail Colo | 10,000-100,000 SF | 1-10MW | Multi-tenant, cages/cabinets |
| Wholesale Colo | 50,000-500,000 SF | 5-50MW | Large dedicated spaces |
| Hyperscale | 100,000+ SF | 20-200+ MW | Cloud providers, standardized |
| Edge | 500-5,000 SF | 50-500kW | Distributed, low latency |
| Modular | Varies | 250kW-2MW | Prefabricated, rapid deploy |
Reference: Facility Types Overview | Enterprise | Colocation | Hyperscale | Edge/Modular
| Tier | Availability | Redundancy | Annual Downtime | Concurrent Maintainable |
|---|---|---|---|---|
| I | 99.671% | N | 28.8 hours | No |
| II | 99.741% | N+1 | 22.0 hours | No |
| III | 99.982% | N+1 | 1.6 hours | Yes |
| IV | 99.995% | 2N or 2N+1 | 0.4 hours | Yes (Fault Tolerant) |
Reference: Tier Classification | Wholesale vs Retail
| System | Typical Rating | Redundancy | Key Considerations |
|---|---|---|---|
| Utility Service | 12-35kV | Dual feeds preferred | Lead time 12-24 months |
| Generators | 2-3 MW each | N+1 to 2N | Fuel storage 24-72 hours |
| UPS | 500kW-2MW modules | N+1 to 2N | 5-15 min runtime typical |
| PDU | 75-500kVA | A+B feeds | Floor or rack mount |
| Rack Power | 5-30+ kW | Dual cord | Monitor at branch level |
Reference: Power Density | Electrical Redundancy | UPS Systems | Generators | Medium Voltage | Busway | STS/PDU
| System | Capacity Range | Best Application | PUE Impact |
|---|---|---|---|
| CRAC (DX) | 20-100 tons | Small/medium facilities | 1.8-2.2 |
| CRAH (CHW) | 30-200 tons | Large facilities | 1.4-1.8 |
| In-Row | 10-40 kW | High density zones | 1.3-1.6 |
| Rear Door HX | 15-50 kW | Retrofit, high density | 1.3-1.5 |
| Liquid/Immersion | 50-200+ kW/rack | AI/HPC workloads | 1.1-1.3 |
Reference: Cooling Architectures | Aisle Containment | CHW vs DX | Free Cooling | Liquid Cooling | PUE
| Element | Standard | Key Requirements |
|---|---|---|
| Raised Floor | 18"-48" height | 1,250-2,500 lb/SF loading |
| Ceiling Height | 10'-15' clear | Above containment systems |
| Racks | 42U-48U | 2,500-3,000 lb capacity |
| Aisle Width | 4'-6' hot/cold | Containment clearances |
| Floor Loading | 250+ PSF | Structural coordination |
Reference: Raised Floor | Cable Management | Rack Specs | White Space
| System | Standard | Data Center Specific |
|---|---|---|
| Physical Security | SOC 2, ISO 27001 | Mantraps, biometrics, CCTV |
| Fire Detection | NFPA 72, 75, 76 | VESDA, cross-zoned |
| Fire Suppression | NFPA 2001 | Clean agent preferred |
| Environmental | ASHRAE TC 9.9 | 64-80°F, 40-60% RH |
Reference: Physical Security | Fire Suppression | Environmental Monitoring | Network/Fiber
| Element | Requirement | Lead Time |
|---|---|---|
| Utility Power | Dual feeds, diverse routing | 12-24 months |
| Water/Cooling | Municipal or reclaimed | 3-6 months |
| Fiber Connectivity | Multiple carriers | 3-12 months |
| Fuel Storage | 24-72 hour capacity | 2-4 months |
Reference: Utility Power | Water | Site Selection | Fuel
| Phase | Duration | Key Activities |
|---|---|---|
| Level 1 (Factory) | Varies | Equipment FAT |
| Level 2 (Installation) | 2-4 weeks | Verification, MEP startup |
| Level 3 (Component) | 2-4 weeks | Individual system testing |
| Level 4 (Integrated) | 4-8 weeks | IST, string testing |
| Level 5 (Operational) | 2-4 weeks | Full load, failure mode |
Reference: Integrated Systems Testing | Load Bank Testing | Commissioning Sequences | Failure Mode Testing
| Code/Standard | Application | Key Articles |
|---|---|---|
| NEC | Electrical | 645, 708 |
| NFPA 75 | IT Equipment | Fire protection |
| NFPA 76 | Telecom Facilities | Fire protection |
| ASHRAE 90.4 | Energy | Data center efficiency |
| Uptime Institute | Tier Certification | Design/construction |
Reference: Electrical Code | Fire Code | Energy Code | Specifications
| Stakeholder | Primary Concerns | Meeting Frequency |
|---|---|---|
| Owner/Developer | Cost, schedule, capacity | Weekly |
| Colo Operator | Tenant requirements, SLAs | Weekly |
| IT/Enterprise | Uptime, capacity, timeline | Bi-weekly |
| Commissioning Agent | Testing, documentation | Weekly during Cx |
| Utility Company | Service, capacity, schedule | Monthly |
| AHJ | Code compliance, inspections | As needed |
Reference: Data Center Stakeholders
