An example of how a hall gets populated: how many racks, what type each one is — NVIDIA GPU compute, networking, storage, CPU-based management — and how they work together. Forty 52U racks in two rows of twenty, as laid out in the example rack design workbook: seven scalable units of four NVIDIA GPU racks and one leaf rack each, plus the spine, storage, management and north/south racks. The servers here are a 4U eight-GPU class, not the NVIDIA VR200 NVL72 racks SAVRN specifies at 250 kW, so the per-rack draw is lower — the population pattern is what carries over. Click any rack or any piece of equipment.
Drag to pan · pinch or use + / − to zoom · Fit resets. Sections follow the workbook tabs.
How a scalable unit is built
The row is seven copies of the same unit, plus one set of core racks. Read it as an example of the mix — how many racks of each type a hall carries, what sits in them, and how the compute, networking, storage and management racks work together. Rack power follows whichever server class is installed; this example is not the 250 kW NVIDIA VR200 NVL72 rack. Click any card and it lights up in the row view above.
WalkthroughRuns the sequence on the row view above, about four seconds a card.
NVIDIA GPU rack — ×4 per SU, 28 in the row
8 × NVIDIA GPU servers (4U, eight GPUs each on an NVIDIA HGX baseboard, direct-to-chip liquid cooled) at U10–U45, each with a 1U coolant manifold directly above it. A 4U in-rack CDU at U6–U9. Three patch panels at the top: MPO trunks to the north/south leaf and the east/west leaf. 64 GPUs per rack in this example; SAVRN's own spec is the NVIDIA VR200 NVL72 rack at 250 kW, with the latest NVIDIA GPUs available at delivery.
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Leaf rack — ×1 per SU
4 × SN5600 east/west leaf switches, each between a pair of patch panels (64 MPO to trunk — spine, 64 MPO to trunk — GPUs). Below them 4 × SN2201 48-port 1G switches for out-of-band management. One leaf rack (A33 in the row view, “SU#1” on the leaf tab) also carries the network infrastructure: 2 × Catalyst 9500-32QC internal switches, 2 × PA-5440 firewalls, 2 × Catalyst 9500-24Y4C external switches and the ISP A / ISP B demarcs.
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Spine racks — ×2
Data Hall 1 east/west spine: 8 × SN5600 per rack in four pairs, each pair under a 3U patch panel.
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North/South rack — ×1
12 × SN5600 in six pairs, each pair under a 3U patch panel — the north/south tier the GPU racks trunk to.
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Storage rack — ×1
24 × VAST Data EBox nodes (U3–U26) with 2 × SN5600 above them and a 3U patch panel.
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Management rack — ×1
5 × Dell VxRail VP-760 nodes (VxRail management cluster), patch panel to north/south; vSAN switches marked TBD on the sheet.
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Equipment schedule — the whole row
Counted from the elevations. Blanking panels excluded.
Model
Role (per sheet)
Height
Where
Qty in row
NVIDIA GPU server
NVIDIA GPU server, 4U
4U
8 per NVIDIA GPU rack (28 racks)
224
CDM
Coolant distribution manifold
1U
8 per NVIDIA GPU rack
224
In-rack CDU
Coolant distribution unit, 4U
4U
1 per NVIDIA GPU rack
28
SN5600
Leaf / spine switch
2U (1U in storage rack)
4 per leaf rack · 8 per spine rack · 12 in North/South · 2 in storage
58
SN2201
48-port 1G RJ45 switch (OOB)
1U
4 per leaf rack
28
C9500-32QC
Internal switch
1U
2 in the net-infra leaf rack
2
C9500-24Y4C
External switch
1U
2 in the net-infra leaf rack
2
PA 5440
Firewall
2U
2 in the net-infra leaf rack
2
ISP A
ISP demarc A
1U
net-infra leaf rack
1
ISP B
ISP demarc B
1U
net-infra leaf rack
1
Vast Ebox
Storage node
1U
24 in the storage rack
24
Dell VP-760
VxRail management node
1U
5 in the mgmt rack
5
Patch Panel
Patch panel
1U / 3U
every rack
165
Where this sits in the block
The general arrangement draws each IT building as 20 rack positions, and one IT hall as two of them — the same two-row, forty-rack shape as this example. The drawing sets the power envelope rather than the rack count: 2,200 kW per building, 8.8 MW across the block's 80 positions, an average of 110 kW a rack, with up to 250 kW available at any one position. So density follows the envelope and the server class: this example's 4U eight-GPU servers draw well under 250 kW a rack, while SAVRN's own spec — the NVIDIA VR200 NVL72 rack at 250 kW — puts 32 racks and 8 MW of IT inside the same envelope. The workbook is a layout: it fixes what goes in each rack, not what each rack draws. Open Infrastructure →
Download the workbook (.xlsx)Source: “Example Rack Design” workbook — tabs Row View, Leaf Racks, Spine Racks, North South, GPU, Mgmt Rack. Equipment identities are the sheet's part numbers; heights are as drawn.