Data centres

    Commissioning software for facilities that cannot afford an undetected single point of failure.

    A data centre is only as reliable as the evidence behind it. From pre-functional checklists on a single UPS to a full integrated systems test across the white space, Deskely holds every level of commissioning in one record, mapped to the systems that keep the facility up.

    DATA HALL 1 — SUBSYSTEM READINESSHOT AISLE CONTAINMENTDH1-ROW-AVerifiedRack row ADH1-ROW-BVerifiedRack row BDH1-CRAH-02FPT openCRAH unitDH1-UPS-01IST dueUPS / PDU feedHALL READY58%2 of 4 subsystems verified

    The problem

    Reliability has to be proven, level by level, before load arrives.

    Mission-critical commissioning moves through defined levels — from installation checks to full-load integrated testing — and each level depends on the one beneath it. When that dependency is tracked across spreadsheets, gaps in the sequence are invisible until a failure exposes them.

    WHERE THE EVIDENCE LIVESCxA test scriptsPDF binderMEP contractor logsExcelOEM commissioning reportsVendor portalOwner punch listEmail threadINTEGRATED SYSTEMS TEST9 daysIs Hall 1 IST-ready?Unknownfour parties disagreeOne register removes the reconciliation entirely.

    Levels are tracked separately

    Level 1 start-up checks, Level 3 functional performance tests and the Level 5 integrated systems test are often recorded in different files with no link between them.

    The IST is a one-shot event

    Dozens of interlocking systems — generators, UPS, chillers, BMS — have to perform together under simulated failure, and the evidence has to hold up to owner and insurer scrutiny.

    White space readiness is unclear

    Mechanical, electrical and controls scope finish at different times, and nobody can say which pods or suites are actually ready for IT load.

    Handover to operations arrives too late

    Colocation customers and operations teams need the as-tested record on day one, but it is usually assembled from scratch after energisation.

    How it runs

    From equipment start-up to operational handover.

    1. 01

      Start-up and PFC

      Pre-functional checklists signed against UPS, generators, ATS, chillers and cooling distribution as each system is installed.

    2. 02

      Functional testing

      Level 3 and 4 performance tests executed per system, with BMS and EPMS points verified as part of the same record.

    3. 03

      Integrated systems test

      Level 5 IST and load bank testing run across the facility, capturing simulated failure response against the sequence of operations.

    4. 04

      Accept and hand over

      White space and central plant accepted area by area, with the as-tested dossier ready for operations and colocation customers.

    COMMISSIONING LADDER — LEVELS 1 TO 5L1 ��— Component verificationDevices installed to spec100%L2 — Pre-functionalStatic checks, no power flow100%L3 — Functional performance testSystems tested standalone74%L4 — Integrated systems testFull load, failure scenarios32%L5 — Handover to operationsO&M accepts the facility0%Every gate reports from the same evidence chain — no separate CxA binder to reconcile.

    Side by side

    Spreadsheets versus a single commissioning record.

    The question at energisation is the same one an owner's engineer or insurer will ask: can you show every level was tested in sequence?

    Spreadsheets versus a single commissioning record.
    AspectFolders and spreadsheetsDeskely
    Commissioning levelsTracked in separate files with no dependency between them.Modelled as a sequence, gated level by level.
    IST evidenceCompiled after the event from scattered notes.Recorded live against the systems and scenarios tested.
    Points verificationA spreadsheet reconciled manually against the BMS.Tracked per point, rolled up to the system automatically.
    White space readinessEstimated in a coordination meeting.Reported per pod or suite from signed records.
    Operations handoverAssembled from scratch after energisation.A structured dossier built as the commissioning happens.

    What changes

    Level 1-5

    commissioning tracked as one dependent sequence

    Per pod

    white space readiness and acceptance

    Live

    IST and load bank evidence, not reconstructed later

    Day one

    handover dossier ready for operations

    Before you shortlist

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    FAQ

    Questions about data centres.

    Project types

    The same commissioning ladder, from one edge cabinet to a whole campus.

    What changes between data centre scopes is the asset breakdown, the level that matters and who witnesses it. The record types, the gates and the audit trail behind them do not.

    01

    Hyperscale new build data centres

    A hyperscale new build runs several general contractors, dozens of equipment vendors and a commissioning agent through five defined levels before a single rack takes load. Deskely holds every system, subsystem and component in one register with the commissioning-level gates enforced by the data, so the black-building test and the integrated systems test are executed against evidence rather than assembled from binders the week before.

    See this scope in detail
    02

    Colocation facility commissioning and SLA acceptance

    A colocation facility commissions its base build — power, cooling and BMS — once, then repeats a smaller commissioning cycle for every suite, cage or pod as tenants take capacity. Deskely keeps the base build register and the per-tenant SLA acceptance records connected, so a new suite can be proven against the shared infrastructure without re-litigating what the base build already demonstrated.

    See this scope in detail
    03

    Edge and modular data centre commissioning

    Edge and modular deployments push most of the FAT effort into the factory and repeat a compressed field commissioning sequence at every site — a telecom hut, a retail edge node, a containerised modular data hall. Deskely templates the record set once per module type and instantiates it across every deployment, so the fiftieth site gets the same rigour as the first without the same time on site.

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    04

    Retrofit and capacity upgrade commissioning

    Capacity upgrades and retrofits add UPS modules, switchgear or cooling capacity into a facility that is already carrying live IT load. Deskely separates the new-equipment commissioning path from the live base build it's being added to, with method-of-procedure evidence and hold points that keep the existing critical load protected while the new capacity is proven.

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    05

    UPS and power train commissioning

    The power train — utility switchgear, generators, UPS, static transfer switches, PDUs and busway — is the subsystem where a single unproven joint or setting can take down every rack downstream. Deskely holds generator paralleling, UPS testing, STS transfer and load bank evidence against each device, with failure-mode testing gated the way it has to be before any of it carries IT load.

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    06

    Cooling, CRAH/CRAC and liquid cooling systems

    AI-density racks put CDUs, direct-to-chip manifolds and rear-door heat exchangers alongside CRAH units, chillers and containment in the same hall. Deskely holds chilled water, air-side and liquid-side systems as linked subsystems, so a rack cannot be marked cooling-ready while the loop it depends on is unproven.

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    07

    Standby generators, fuel and switchgear

    Standby power depends on generators, day tanks, bulk storage, fuel polishing, ATS and paralleling switchgear all performing together under load, not individually on a data sheet. Deskely tracks every generator, fuel system component and switchgear asset through commissioning, load bank testing and the 72-hour reliability run that precedes energisation.

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    08

    White space rack, power and busway fit-out

    White space fit-out is a high-volume, highly repetitive scope: rack positions, busway taps, PDUs, remote power panels and structured cabling all installed to the same standard across a hall. Deskely templates the record once and instantiates it per rack, so customer acceptance is measured rather than inferred from a sample.

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    09

    Integrated systems testing and Level 5 commissioning

    Integrated systems testing — commonly Level 5 in a tiered commissioning programme — proves that power, cooling and controls work together under simulated failure, not just individually. Deskely holds every scenario, every system dependency and every observed result in one record set, so the black-building test produces evidence rather than a narrative report.

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    10

    Campus substation and utility interconnection

    The campus substation, HV switchgear, transformers and utility interconnection sit upstream of every hall, generator and cooling plant on a data centre campus. Deskely tracks HV asset commissioning, protection relay testing and utility coordination as a distinct subsystem with its own energisation gates, because a mistake here affects the whole site rather than one rack.

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