Exos SCALE · 4U · 74 Bays · SAS-4
Exos SCALE EX4U74 74-bay 4U SAS-4 enclosure
Authorized Reseller · Best Pricing · Expert Guidance
Deliver max capacity in a hyper-efficient JBOD system designed for remote and distributed environments.
Industry-leading capacity in one enclosure, engineered by Seagate
SAS or SATA drives with pre-configured SAS zoning
1m rack depth for space-constrained sites, remote branches and IoT hubs
Plus up to 30% lower power consumption than previous generations
What is the Exos SCALE EX4U74?
A powerful solution built to scale from edge to core. Exos® SCALE EX4U74 brings multi-petabyte capacity to standard-depth edge racks — balancing performance, efficiency and flexible configuration in a compact form factor.
Industry-leading capacity. 3.2PB in a single enclosure, engineered by Seagate. Built to accommodate today’s largest drives and tomorrow’s innovations.
Customizable & configurable. Support for deployment of either SAS or SATA drives, with pre-configured SAS zoning for streamlined deployment.
Simplified deployment. 1m rack depth for space-constrained sites, remote branches, IoT hubs and edge analytics. Built-in carrier and internal cable management, toolless access and drawer-style serviceability — built for flexibility across OCP racks, standard data centers and edge deployments.
How much faster is SAS-4 than SAS-3 on the EX4U74?
Experience high speed and low latency with SAS-4 connectivity.
Exos SCALE EX4U74 leverages advanced SAS-4 architecture to deliver double the data throughput of previous SAS-3 systems — accelerating ingestion, movement and processing across high-performance computing (HPC), AI and enterprise workloads.
Built for low latency and real-time responsiveness, Exos SCALE EX4U74 keeps pace with evolving data demands from generative AI to disaggregated storage environments. The result: faster pipelines, streamlined operations and uncompromising performance across edge and datacenter deployments.
How does the EX4U74 maximize capacity per rack unit and per watt?
Maximize capacity when rack space and power are limited.
Powered by Seagate Mozaic™ hard drive technology, Exos SCALE EX4U74 enables more capacity per square meter and per watt, making it ideal for data centers and edge environments where space, power and cooling are at a premium.
This balance of density and efficiency provides a future-ready foundation for AI, enterprise and sovereign data workloads alike.
Explore the Mozaic platform
How much more efficient is the EX4U74 than a legacy enclosure?
Efficiency is engineered at three levels — the chassis, the airflow and the drives themselves.
Intelligent Cooling
Designed for high-density deployments, EX4U74 integrates intelligent cooling, optimized airflow and dynamic fan control to deliver up to 70% better thermal efficiency and 30% lower power consumption than legacy enclosures.
Vibration Dampening
Next-generation vibration mitigation promotes consistent performance and drive longevity in dense environments — minimizing mechanical resonance and acoustic interference to protect sensitive components and maintain optimal throughput.
Enterprise-Grade Security
Seagate Secure™ component certificate, in-band management via SES and out-of-band via Redfish, and compliance-ready for air-gapped and sovereign data deployments.
Is the EX4U74 ready for 50TB Mozaic hard drives?
Seagate Mozaic hard drives with 50TB and beyond are on the horizon — and Exos SCALE EX4U74 is engineered to meet their full potential.
That means an unmatched foundation for scalable, energy-efficient storage. Whether managing generative AI workloads, HPC simulations or massive unstructured datasets, Exos SCALE EX4U74 offers long-term scalability without disruptive infrastructure overhauls to keep your data architecture future ready.
With a trusted SAS-based DAS architecture, Exos SCALE EX4U74 delivers the reliability and low-latency performance required for regulated and mission-critical workloads. It supports hybrid drive configurations and integrates seamlessly into existing infrastructure, offering data sovereignty, compliance and peace of mind — all while simplifying deployment and maintenance.
Exos SCALE EX4U74 specifications
Key specifications for the 74-bay 4U high-density enclosure. Full details are in the Seagate datasheet.
| Form factor | 4U rackmount |
|---|---|
| Drive slots | 74 |
| Single-enclosure capacity | 3.2PB |
| Drive support | SAS or SATA, with pre-configured SAS zoning |
| Host connectivity | Four ×4 mini-SAS HD Expansion I/O connectors per I/O module |
| Interface speed | 24Gb/s, 12Gb/s, 6Gb/s SAS |
| Power supply | 1800W (80 PLUS Titanium) |
| Dimensions (H × W × D) | 175.5mm x 448.5mm x 932mm |
| Rack depth | 1 meter |
| Weight | 98.9kg |
| Power efficiency | Up to 30% lower power consumption vs. previous generations |
| Cooling efficiency | Up to 70% improved cooling efficiency vs. previous generations |
| Management | In-band via SES, out-of-band via Redfish |
| Security | Seagate Secure™ component certificate; compliance-ready for air-gapped and sovereign deployments |
| Serviceability | Toolless access, drawer-style serviceability, built-in carrier and internal cable management |
| Hot-swappable components | Drives, IOM, PSUs, fans |
Specifications are taken from the Seagate Exos SCALE EX4U74 datasheet (DS32.1-2602US). Actual data rates may vary depending on operating environment and other factors.
How does the EX4U74 compare with the EX2U12, EX2U24, EX5U84 and DC4U100?
We’ve laid them out side by side so you can quickly spot what fits your needs.
| EX2U12 / EX2U24 | EX5U84 | EX4U74 | DC4U100 | |
|---|---|---|---|---|
| Form factor | 2U | 5U | 4U | 4U |
| Drive slots | 12 / 24 | 84 | 74 | 100 |
| Drive support | SAS | SAS | SAS/SATA | SAS/SATA |
| Host connectivity | Three universal ×4 12Gb/s mini-SAS HD connectors (SFF-8644) per I/O module | Three universal ×4 12Gb/s mini-SAS HD connectors (SFF-8644) per I/O module | Four ×4 mini-SAS HD Expansion I/O connectors per I/O module | Four ×4 mini-SAS HD Expansion I/O connectors per I/O module |
| Interface speed | 12Gb/s, 6Gb/s SAS | 12Gb/s, 6Gb/s SAS | 24Gb/s, 12Gb/s, 6Gb/s SAS | 24Gb/s, 12Gb/s, 6Gb/s SAS |
| Power supply | 580W (80 PLUS Platinum) | 2200W (80 PLUS Titanium) | 1800W (80 PLUS Titanium) | 1800W (80 PLUS Titanium) |
| Dimensions (H × W × D) | 88.9mm x 483mm x 630mm | 220mm x 483mm x 933mm | 175.5mm x 448.5mm x 932mm | 175.5mm x 448.5mm x 1146mm |
| Weight | 26kg / 24kg | 135kg | 98.9kg | 125.6kg |
| Rack depth | — | — | 1 meter | 1.2 meter |
| Hot-swappable components | Drives, PCMs, I/O modules | Drives, PSUs, cooling modules, I/O modules | Drives, IOM, PSUs, fans | Drives, PSUs, fans, I/O modules |
Where the EX4U74 is deployed
Where our solution architects deploy this platform most often.
Exos SCALE EX4U74 datasheet
Seagate documentation for this enclosure, hosted on our CDN.
Exos SCALE EX4U74: frequently asked questions
Capacity, SAS-4 performance, efficiency and procurement answers for the 74-bay 4U enclosure.
Exos SCALE EX4U74 delivers multi-petabyte storage, SAS-4 performance, energy efficiency and enterprise reliability for AI, HPC and edge workloads. It brings 3.2PB of capacity to standard-depth edge racks, balancing performance, efficiency and flexible configuration in a compact 4U form factor.
Industry-leading capacity of 3.2PB in a single enclosure across 74 drive slots, engineered by Seagate and built to accommodate today’s largest drives and tomorrow’s innovations.
Exos SCALE EX4U74 leverages advanced SAS-4 architecture to deliver double the data throughput of previous SAS-3 systems — accelerating ingestion, movement and processing across HPC, AI and enterprise workloads, with low latency and real-time responsiveness.
Yes. It supports deployment of either SAS or SATA drives, with pre-configured SAS zoning for streamlined deployment, and it supports hybrid drive configurations.
The 1m rack depth suits space-constrained sites, remote branches, IoT hubs and edge analytics — environments where a standard 1.2m deep chassis will not fit. It is built for flexibility across OCP racks, standard data centers and edge deployments.
Up to 30% lower power consumption and 70% improved cooling efficiency compared to previous generations, through intelligent cooling, optimized airflow and dynamic fan control, plus best-in-class watts-per-terabyte performance.
Yes. It carries a Seagate Secure™ component certificate, offers in-band management via SES and out-of-band via Redfish, and is compliance-ready for air-gapped and sovereign data deployments. Its SAS-based DAS architecture delivers the reliability and low-latency performance required for regulated and mission-critical workloads.
Our storage specialists are here to help you find the right solution for your data challenges. BlueAlly (DiskDataWorks.com) is an authorized Seagate reseller — call 844-356-5142 or request a quote online.
Request an Exos SCALE EX4U74 quote
Our storage specialists are here to help you find the right solution for your data challenges. Request a validated Exos SCALE EX4U74 configuration and authorized-reseller pricing from a BlueAlly solution architect.
No-cost architecture assessment
Right-sized drive and expansion configuration
Capacity, power and watts-per-terabyte projection
Flexible procurement — CapEx or OpEx
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