The on-premises hall is not dead — Uptime Institute's 2025 survey puts 45% of IT load in enterprise-owned facilities. But the physical plant is aging against a moving target: the average rack now draws about 27 kW, 4.5× the 6.1 kW baseline those halls were fitted to, while most deployed cabinets still sit in the 10–30 kW band. Rebuilding the room is not an option when a utility uprating takes 12–24 months and over $2M per MW in major markets. The enterprise move is narrower and cheaper: keep the room, swap the boundary — racks, containment and power provision, one row at a time, without a hall-wide outage.
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45% of IT load on-prem · 27 kW = 4.5× legacy baseline · rack by rack, not rebuild
An enterprise retrofit runs against production, a change advisory board and a budget cycle. These six moves are how the boundary gets swapped while the business stays up — each one checkable against a number before the purchase order is signed.
Live cut-over, position by position — frames arrive crated and pre-integrated; each swap is a planned change window for one cabinet, never a hall-wide outage.
1 position/windowExisting CRAC units stay — cold aisle containment closes the boundary your perimeter units already serve; the measured case moved PUE 1.84 → 1.65 in a temperate climate.
PUE 1.84 → 1.65Rack-by-rank replacement — 42U–52U frames land on existing 600 mm rows, with 800 mm builds quoted where the density roadmap demands them.
600 / 800 mmPhased procurement — MOQ 5 per order, one budget wave at a time, each batch repeating on a 30-day FOB cycle so capex tracks the fiscal year, not the factory.
MOQ 5 · 30 daysFloor-loading check before order — 1,600 kg frames against 1,363 kg-class legacy ratings; the slab verification data pack ships with the quotation, not after it.
1,600 kg @ 4×Busbar provision for the next raise — slot columns rated to a 400 kW per rack-position ceiling, so tomorrow's density step is a tap-off box, not a refit.
400 kW/positionThe enterprise pair: a 42U, 600 × 1200 mm frame that drops onto legacy rows, and an 800 mm-wide 48U for the rows that will carry GPU-class heat. Both fit through standard doors and land on the same containment module.
| Parameter | RF-42U-600×1200 | RF-48U-800×1200 |
|---|---|---|
| Static load | 1,500 kg | 1,600 kg |
| Load verification | 4× safety factor · static hold 72 h · creep recheck before release | |
| Power envelope per cabinet | 10–30 kW air-cooled class | to 40 kW air-cooled · 40–132 kW liquid option |
| Width × depth | 600 × 1200 mm | 800 × 1200 mm |
| Height (mm / inch) | 1991 / 78.4 | 2265 / 89.2 |
| Columns | SPCC 2.0 mm, five-bend reinforcement, ±0.1 mm forming | |
| Busbar provision | slot columns, ≤400 kW per rack-position ceiling, tap-off ready | |
| Front door | steel mesh ≥80% open area · solid and glass options | |
| Containment interface | CAC doors, roof and sealing on the 600 mm module · leakage 3–10% | |
| Grounding continuity | ≤0.1 Ω frame-to-frame, jumpers included | |
| Packing | CKD flat-pack or fully assembled · export plywood crate | |
| Seismic option | GR-63-CORE Zone 4 bolt-down kit | |
| Finish | degrease → pickling → phosphating → powder coat, RAL 9005 | |
| Standards | EIA-310-E · IEC 60297 · CE (EN IEC 62368-1) · RoHS | |
Frames, the aisle boundary and the power provision — each links to its full specification page.
The drop-in replacement frame: 1,500 kg static load, 600/800 mm widths, mesh or solid doors, tool-free bayning — quoted per budget wave at MOQ 5.
The efficiency step that keeps the CRACs: doors, roof panels, blanking and brush sealing on the existing row geometry — measured at PUE 1.84 → 1.65.
The provision play: columns as tap-off stations on a 250–800 A track, so the next density raise lands as a plug-in box instead of a construction project.
45% of IT load still on-prem · PUE 1.84 → 1.65 · 1,600 kg @ 4× · MOQ 5
48-hour engineering reply · MOQ from 5 cabinets · FOB / CIF / DDP