--- title: "Buying a Data-Center Module: Power Assembly or IT Space?" description: "Leviathan Systems — Technical content Published 2026-10-20; updated 2026-10-20." canonical: "https://www.leviathansystems.co/articles/prefabricated-power-module-versus-it-data-hall-module" last-updated: "2026-10-20" --- # Buying a Data-Center Module: Power Assembly or IT Space? Leviathan Systems — Technical content Published 2026-10-20; updated 2026-10-20. A prefabricated power module or power skid packages a critical power system. An IT module provides accommodation for IT, potentially with supporting power and cooling; a data-hall product can combine several IT modules into one room. Identify the functions and stated contents before treating a module count as deployable IT capacity. ## A power module packages the power system A prefabricated power assembly groups equipment serving the data center's electrical supply function. Housing that equipment in an enclosure does not turn its occupied space into server accommodation. The first distinction is the system the assembly contains, before its size, appearance or module count. Schneider Electric's US product descriptions, checked October 20, 2026, provide concrete examples. Its Galaxy VXL Power Module description identifies UPS, switchgear, lithium-ion batteries, cooling and controls; the range heading also identifies management software and an enclosure. These are current product-range descriptions, rather than the contents of an order-specific quotation. The same category separately lists a Power Skid. Its Galaxy VXL description groups UPS, switchgear and controls, while the heading also names management software. Read that as an integrated power-equipment assembly; the Power Module description expressly adds housing around its power system. The shorter skid description does not establish that batteries, cooling or any enclosure are excluded from a particular offer. Those contents require an explicit supplier return. Cooling within the described power assembly serves a different purchasing question from cooling the intended IT space. Establish what equipment and environment it supports. A cooling entry beside UPS equipment cannot supply an unstated server-room cooling function. References: [S1](https://www.se.com/us/en/product-category/7550-prefabricated-data-center-modules/), [S2](https://www.se.com/us/en/product-range/62323-power-module/?parent-subcategory-id=7580), [S3](https://www.se.com/us/en/product-range/62324-power-skid/?parent-subcategory-id=7580) ## IT infrastructure can include its supporting systems An IT-space product addresses where the IT equipment will be accommodated. It can also include systems supporting that space. Schneider's All-in-one module range, for example, describes a structure containing UPS, cooling, racks and management software. It would therefore be wrong to classify every IT module as an empty shell or to assume its power and cooling must always be bought separately. The Prefabricated Data Hall range describes another arrangement: factory-built IT modules combined at the site to form a larger IT room. Several constituent modules can belong to one room-scale product. An individual module in that arrangement is not necessarily an independently usable data center. Read the offered accommodation and its supporting systems together. A description that includes racks still needs a separate statement of the servers, switches and other IT equipment actually supplied. Likewise, a data-hall label needs the supplier's stated complete-room scope; it supplies no fixed amount of IT space or supported equipment per module. References: [S4](https://www.se.com/us/en/product-range/62321-allinone-module/), [S5](https://www.se.com/us/en/product-range/63608-prefabricated-data-hall/?parent-subcategory-id=7570) ## Follow the functions through the offered package For a purchase comparison, follow the relationship from the offered power system to the IT accommodation and the equipment that space is intended to support. Then identify the cooling serving the IT equipment and space. This is a way to read the scope, not an electrical or thermal layout. Ask which offered item provides each function, which functions are combined in one item, and which are expressly provided elsewhere. An enclosure around power equipment and an enclosure containing racks can look like similar buying units while delivering different systems. Conversely, one all-in-one item can contain several functions that another proposal separates. Keep the resulting conclusions in their own terms. IT space, supported power delivery, cooling performance, redundancy and server population each need their applicable supplier and project basis. Knowing how many modules appear on the equipment list settles none of those quantities. Even the number of IT-module items may describe pieces of a larger room rather than separate complete rooms. ## Compare two offers that each list two modules Consider fictional purchase EX-MOD20. Offer A lists one power module, P1, and one IT module, I1. Offer B lists two IT modules, I2 and I3, with their supporting power expressly supplied elsewhere. No dimensions, equipment ratings, rack population, cooling arrangement or redundancy design are stipulated. These are invented offer descriptions, not Schneider quotations or an engineering layout. Both offers list two physical modules. A's count groups a power-system item with an IT-accommodation item. B's count groups two IT-accommodation items and places supporting power outside those two items. The shared count therefore conceals a different allocation of functions. Compare I1 with the accommodation actually described by I2 and I3. Establish whether the latter form one room or separate spaces, and obtain the supplier's stated usable accommodation for the intended equipment. Two IT-module items do not establish twice I1's space, twice its rack positions or any particular server population. The example supplies no basis for those conclusions. Next compare the power provision serving each proposed IT arrangement. P1 is an identified item within A; B's power is an expressly separate provision. B should not be treated as lacking power merely because that provision is elsewhere, nor should A be treated as complete merely because P1 appears in its module list. Establish the actual scope and applicability of each supporting package. If an offered IT module also includes power equipment, retain that content in the comparison rather than assuming what P1 replaces or supplements. Apply the same reading to cooling: distinguish any cooling of a power assembly from the provision serving the IT accommodation. Compare each complete proposed package, including its stated outside provision, against the same intended IT result. Until those functions and their applicable capabilities are established, the offers support a scope distinction, not a capacity ranking. ## Compare delivery state and evidence after identifying the system Once the offered function is clear, ask how much integration is included and what evidence accompanies it. An enclosed power assembly, a populated IT module and constituent data-hall modules can each have their own delivery state. Prefabrication alone does not resolve the remaining work or the scope of a factory report. The existing HGX versus DGX article compares supplier-integrated racks with separately delivered equipment. The GPU cluster acceptance-test-plan article explains factory and site evidence boundaries. Use those guides for the delivery-state and evidence questions, and the GPU build RFP guide for the resulting physical work package. Keep the decision here focused on which system the module purchase actually provides. ## Bring the defined IT work to the installation inquiry Where the selected IT accommodation is inside a third-party colocation facility, Leviathan's Colocation Infrastructure Installation service is relevant to agreed customer-side equipment mounting, IT cabling, labeling and physical handoff records. Use the related service and project inquiry to describe the selected equipment, approved positions and requested IT tasks, together with the supplier and provider boundaries established from the offers. This product-scope comparison provides no module supply, facility engineering, operation or commissioning offer. Actual system implementation belongs to the appointed qualified parties. The installation discussion concerns the defined customer-side physical IT work, with scope, requirements and availability confirmed for the engagement. ## Primary sources - [S1 — Schneider Electric — Prefabricated Data Center Modules](https://www.se.com/us/en/product-category/7550-prefabricated-data-center-modules/). Checked 2026-10-20. Current US range categories distinguish IT infrastructure from power assemblies. Product examples establish functions, without defining an order-specific supply or capacity. - [S2 — Schneider Electric — Power Module](https://www.se.com/us/en/product-range/62323-power-module/?parent-subcategory-id=7580). Checked 2026-10-20. Named Galaxy VXL power-system component and enclosure description. Cooling in this assembly establishes no server-room cooling capability. - [S3 — Schneider Electric — Power Skid](https://www.se.com/us/en/product-range/62324-power-skid/?parent-subcategory-id=7580). Checked 2026-10-20. Named integrated power-equipment example. Its short component list is not an exclusion schedule for batteries, cooling or housing. - [S4 — Schneider Electric — All-in-one module](https://www.se.com/us/en/product-range/62321-allinone-module/). Checked 2026-10-20. Named IT-infrastructure example including UPS, cooling, racks and management software; it establishes no supplied server population or project suitability. - [S5 — Schneider Electric — Prefabricated Data Hall](https://www.se.com/us/en/product-range/63608-prefabricated-data-hall/?parent-subcategory-id=7570). Checked 2026-10-20. Factory-built IT modules forming a larger IT room. No fixed space, cabinet count or deployable IT capacity per module is inferred. ## Related Leviathan resources - [Colocation Infrastructure Installation](/services/colocation-installation) - [Discuss customer-side colocation IT installation](/contact?service=colocation-installation&from=/articles/prefabricated-power-module-versus-it-data-hall-module) - [Delivered integration states: HGX versus DGX](/articles/hgx-vs-dgx-deployment) - [GPU cluster acceptance: factory and site evidence](/articles/acceptance-test-plan-atp-gpu-cluster) - [GPU build RFP: define the physical work package](/articles/rfp-sow-checklist-gpu-build) ## Discuss the Customer-Side IT Installation For work inside a third-party colocation facility, share the selected equipment, approved positions and requested mounting or IT cabling scope. We can discuss requirements and availability. [Discuss the scope](/contact?service=colocation-installation&from=/articles/prefabricated-power-module-versus-it-data-hall-module)