S-4: Proven
High-Density Cooling
The trusted entry point in DDC's S-Series, optimized for standard rack sizes and modern AI workloads. Provides up to 85kW air-side cooling in a self-contained environment, with optional liquid-assisted integration to support any density path as you scale.
S-4 brings next-generation containment to standard rack deployments.
By enclosing and independently cooling each rack, S-4 increases efficiency, protects critical assets, and provides a seamless pathway to liquid-to-chip integration when densities rise.
Key Features
Contain, cool and optimize each rack in its own unit for efficient data center operations
Compatible with CDU technologies, including Chilldyne (Daikin-owned)
Optimized for standard rack sizes and typical ceiling heights
Real-time monitoring and Dynamic Density Control™ readiness
High-density air-side cooling for AI/HPC servers
Modular design for fast roll-in installation and scale-out
The S-4 is Available In 2 Models
Base Model
Sample equipment supported includes H100, B100, B200, Storage Networking
GPU Model
Supports 50-85kW air-side cooling to offset any heat not abated by liquid to chip
PRODUCT HIGHLIGHTS
S-4 Base Model Specs
| Heat Abatement | Up to 50kW air-only cooling | Up to 50kW air-only cooling |
| Rack Width | 30" | 36" |
| Rack Units | 45U, 48U, 52U | 45U, 48U, 52U |
| Dimensions - 45U | 115"H x 30"Wx82"D | 115"H x 36"Wx82"D |
| Dimensions - 48U | 120"Hx30"Wx82"D | 120"Hx60"Wx82"D |
| Dimensions - 52U | 127"Hx30"Wx82"D | 127"Hx36"Wx82"D |
| Liquid-to-Chip Provisioning | Optional | Optional |
| NEMA Design | NEMA 3R | NEMA 3R |
S-4 GPU Model Specs
| Heat Abatement | Up to 85kW air-only cooling | Up to 85kW air-only cooling |
| Rack Width | 30" | 36" |
| Rack Units | 45U, 48U, 52U | 45U, 48U, 52U |
| Dimensions - 45U | 115"H x 30"Wx82"D | 115"H x 36"Wx82"D |
| Dimensions - 48U | 120"Hx30"Wx82"D | 120"Hx60"Wx82"D |
| Dimensions - 52U | 127"Hx30"Wx82"D | 127"Hx36"Wx82"D |
| Liquid-to-Chip Provisioning | Optional | Optional |
| NEMA Design | NEMA 3R | NEMA 3R |
Use Cases
Hyperscaler clusters with standard GPU server dimensions
Enterprise AI/HPC deployments targeting rapid scale with predictable cooling
Colocation environments optimizing rack density without facility redesign
Deployment Scenarios
Greenfield builds seeking
scalable baseline cooling
Retrofit projects with a minimum of 12 ft ceiling height, looking to support higher density cooling via DDC’s “data center in a box” architecture
FAQs
Can S-4 support future liquid-to-chip cooling?
Yes. S-4 is designed for seamless CDU integration, including Chilldyne.
What air-side density can S-4 support?
Up to 85 kW per rack depending on configuration and workload.
Is S-4 compatible with standard racks?
Yes. S-4 is optimized for standard rack sizes.
How does S-4 improve efficiency?
Rack containment minimizes mixing, stabilizing temperatures and reducing fan energy.
