Vertiv SR2N05020NAA1 5-Rack 20kW Prefabricated Row Data Center Solution

Overview

The Vertiv SR2N05020NAA1 is a prefabricated, integrated row-based data center solution that ships as a coordinated 5-rack, 20kW system — the right configuration when you need a deployable compute row without engineering a custom power and cooling stack from scratch. At 3,900 mm end-to-end, this row covers five 42U × 600 × 1,400 mm enclosures managed by a single cooling unit and a 20kW PMC distribution tier, delivering 4 kW of usable capacity per rack. For mid-density server environments, edge deployments, or branch infrastructure rooms where engineer-hours for bespoke design aren't available, the SR2N05020NAA1 compresses weeks of coordination into a factory-validated assembly.

This configuration ships without fire suppression — the NAA1 suffix designates no redundant cooling and no integrated fire suppression system. If your site's fire code mandates suppression or your availability targets require N+1 cooling, review the FAA1 or NAA2 variants in the same Vertiv SR2 series before specifying this unit.

Key Features

• 20 kW Total Power Capacity via 20kW PMC Distribution: The Power Management Controller handles all 20 kW across the row in a single distribution tier — meaning you bring one feed to the row rather than individually provisioning five separate rack PDUs from your panel. Less field wiring, fewer single points of failure at the distribution layer.
• Five 42U Enclosures (600 × 1,400 mm): The 1,400 mm depth accommodates modern 2-post and 4-post server chassis, including deep 1U/2U compute sleds with rear cable management. At 42U per rack, you're not compromising on vertical density — full-height servers, patch panels, and cable managers all fit without rearranging the layout.
• 4 kW Per Rack Allocation: With 20 kW shared across five racks, each enclosure gets a 4 kW budget. That's sufficient for mid-density GPU-light compute, networking gear, or storage nodes, but tight for high-density AI or GPU workloads — plan your per-rack draw carefully before committing.
• Single Cooling Unit: One cooling unit serves the full row. This keeps the mechanical footprint compact and reduces the number of service points, which matters in space-constrained equipment rooms. The trade-off is no cooling redundancy — a single cooling failure takes the row offline. If uptime SLAs exceed 99.9%, factor this into your design or step up to a dual-cooling-unit variant.
• Five 30A PDUs (One Per Rack): Each enclosure gets its own 30A PDU — power is distributed at the rack level, not daisy-chained. This isolates power events to a single rack and simplifies capacity planning per enclosure. The 30A circuit per rack aligns with the 4 kW per-rack ceiling (at 208V, 4 kW draws approximately 19A, leaving headroom under the 30A breaker).
• 3,900 mm Row Length: At 3.9 meters, the SR2N05020NAA1 requires a floor footprint of roughly 3.9 m × 1.4 m (depth). Confirm aisle clearance requirements — front and rear service access for a 1,400 mm-deep rack demands at least 900–1,200 mm of clear aisle on each side per most data center standards.
• No Fire Suppression (NAA1): The base configuration omits integrated fire suppression. If your jurisdiction or insurance carrier requires suppression in the equipment room, you'll need to specify the AA2-suffix variant or provision room-level suppression independently. Do not overlook this during AHJ review.

Integration & Compatibility

The SR2N05020NAA1 is designed for integration into enterprise data center power and cooling infrastructure. The 20kW PMC distribution tier is a Vertiv-coordinated system — power input requirements, breaker sizing, and branch circuit design should be confirmed against Vertiv's installation documentation for this SKU before facility rough-in begins. The row integrates with standard raised-floor or slab-on-grade installations; cable entry paths depend on your site's under-floor versus overhead routing approach.

For organizations comparing prefabricated row solutions to custom rack deployments, review the full range of rack enclosures and infrastructure solutions to understand where prefab rows deliver ROI versus build-to-spec alternatives. Organizations scaling beyond a single row should evaluate whether the 5-rack NAA1 configuration supports future row-to-row expansion without re-engineering the PMC distribution tier.

If your project requires N+1 cooling redundancy, the SR2N05020PAA1 and SR2N05020FAA1 variants offer dual PDU per rack and dual cooling configurations respectively at the same 5-rack, 20kW scale. The SR2N04020NAA1 covers the same 20kW pool across four racks instead of five — useful when per-rack density targets exceed 4 kW. A data center infrastructure planning guide can help clarify which configuration fits your load profile.

Frequently Asked Questions

Q: What is the difference between the SR2N05020NAA1 and the SR2N05020PAA1?

A: Both are 5-rack, 20kW row solutions with a single cooling unit and no fire suppression. The NAA1 includes 5 PDUs (one per rack at 30A), while the PAA1 includes 10 PDUs (two per rack), giving dual-feed redundancy at the rack level. Choose the PAA1 if your servers require dual power supply feeds.

Q: Does the SR2N05020NAA1 include fire suppression?

A: No. The NAA1 suffix designates no integrated fire suppression. If your facility requires suppression, specify the SR2N05020NAA2 variant, which adds fire suppression and extends the row length to 4,500 mm to accommodate the suppression system.

Q: What is the per-rack power capacity of the SR2N05020NAA1?

A: Each of the five racks receives 4 kW of capacity under the 20kW total system allocation. This supports mid-density compute and networking loads. High-density GPU or HPC workloads that exceed 4 kW per rack will require a different row configuration — consider a 3-rack or 4-rack variant that concentrates the 20kW pool across fewer enclosures.

Q: Can this row be expanded to additional racks later?

A: The SR2N05020NAA1 is a factory-configured prefabricated solution sized at 5 racks and 20kW. Expansion beyond this configuration typically requires specifying a different SKU or adding a separate row. Consult Vertiv's infrastructure team for multi-row expansion planning before committing to a single-row deployment if growth is anticipated.

Q: What floor space does the SR2N05020NAA1 require?

A: The row measures 3,900 mm in length with each rack at 600 mm wide and 1,400 mm deep. Allocate adequate front and rear aisle clearance per your data center's standards — typically 900–1,200 mm per aisle for safe service access to 1,400 mm-deep enclosures.

Q: Is the SR2N05020NAA1 suitable for edge or branch deployments?

A: It can work for larger edge deployments with sufficient floor space and a single-phase or three-phase 20kW power feed available. However, at 3,900 mm row length, it is a substantial footprint. Smaller edge sites may be better served by a 2-rack or 3-rack configuration in the same Vertiv SR2 family.

Jerry Tildsen

The SR2N05020NAA1 is the widest single-cooling-unit configuration in the SR2 5-rack family — five 42U enclosures sharing one 20kW PMC distribution block and one cooling unit across a 3,900 mm row. That tradeoff is the whole story here: you get a clean, coordinated row deployment with centralized power management, but you are accepting a single mechanical failure point on the cooling side. For teams evaluating this configuration, that's the decision gate, not the rack count or power density.

Technical Highlights:

• 20kW PMC Distribution: Centralizes all power management for the row at a single controller rather than five independently managed PDU feeds — simplifies monitoring and reduces the number of breaker panels you need to coordinate upstream.
• 4 kW Per Rack Ceiling: At 208V, 4 kW pulls roughly 19A continuous — your 30A PDU per rack leaves about 30% headroom, which is appropriate for planned growth but leaves zero room for high-density GPU nodes or dense storage arrays exceeding that budget.
• Five Individual 30A PDUs: One PDU per enclosure means a PDU failure or breaker trip is isolated to one rack, not the row. That's a meaningful advantage over daisy-chained or shared distribution schemes in unpredictable load environments.

Deployment Considerations:

• Floor plan verification is non-negotiable before ordering: the 3,900 mm row length plus minimum aisle clearances on both sides of 1,400 mm-deep racks means you need approximately 3.9 m × 3.7 m of clear floor area minimum — that's a hard physical constraint, not a guideline.
• Single cooling unit with no redundancy means any cooling maintenance window takes the full row offline. If your SLA requires continuous uptime, the FAA1 or PAA1 variants with dual cooling and dual PDU configurations are the correct path — not this one.

The SR2N05020NAA1 fits best in a corporate IT equipment room or mid-tier colocation scenario where you're deploying mid-density compute (storage servers, virtualization hosts, networking gear) and have facility-level cooling and suppression already in place. It's not the right configuration for a standalone edge site with no backup cooling or for any workload that pushes individual racks above 4 kW draw.