Exos SCALE — JBOD Expansion Systems
Exos SCALE high-density JBOD storage systems
Authorized Reseller · Best Pricing · Expert Guidance
For relentless data growth that demands utmost density. Systems engineered for peak capacity at scale for hyperscale and enterprise data centers.
Industry-leading capacity in one enclosure, engineered by Seagate
Expansion capability up to 336 hard drives or solid-state drives
Effective maximum throughput in a dual controller configuration
Double the data throughput of previous SAS-3 systems
What are Exos SCALE systems?
Exos SCALE delivers high‑density JBOD storage with 24G SAS throughput, software‑defined flexibility and future‑ready design to reduce TCO at scale.
Designed for predictable performance across AI pipelines and large data lakes, with a modular design that expands seamlessly as demand accelerates.
Power and space efficient to reduce operational overhead, Exos SCALE delivers the lowest true cost per terabyte across the full lifecycle.
Seagate’s vertical integration means we build the drives, storage controllers and chassis — offering best-in-class design and thorough testing. The systems are designed for high availability with no single point of failure for data or power.
What makes Exos SCALE different from a legacy JBOD?
Six engineering commitments carry across every system in the SCALE family, from the 2U EX2U12 to the 3.2PB DC4U100.
Density Unmatched
Industry-leading capacity of 3.2PB in a single enclosure, built to accommodate today’s largest drives and tomorrow’s innovations.
Throughput Faster
Advanced SAS-4 architecture delivers double the data throughput of previous SAS-3 systems, accelerating ingestion, movement and processing.
Cost Minimized
Up to 30% lower power consumption and best-in-class watts-per-terabyte performance, designed to reduce OpEx and minimize TCO.
Operations Simplified
Built-in carrier and internal cable management, toolless access and drawer-style serviceability with interchangeable FRUs.
Stacks on Your Terms
Support for deployment of either SAS or SATA drives, with pre-configured SAS zoning for streamlined deployment.
Future Enabled
Seagate Mozaic™ hard drives with 50TB and beyond are on the horizon — and Exos SCALE is engineered to meet their full potential.
How does Exos SCALE cut power and thermal load per rack?
Cut power and cooling costs with smarter, greener design.
Designed for high-density deployments, the newest Exos SCALE enclosures integrate intelligent cooling, optimized airflow and dynamic fan control to deliver up to 70% better thermal efficiency and 30% lower power consumption than legacy enclosures.
But efficiency doesn’t stop at the chassis. Exos SCALE is built to harness the energy-saving advantages of Mozaic hard drives, delivering sustainable, large-scale storage with reduced operational costs and environmental impact.
How do the five Exos SCALE systems compare?
Five JBOD expansion platforms, from a compact 12-bay 2U to a 100-bay 4U holding 3.2PB.
3.2PB in a single 1.2m enclosure for hyperscale environments, centralized archives and AI/ML staging.
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Multi-petabyte capacity in a 1m rack depth for space-constrained sites, remote branches and edge analytics.
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Build an exabyte-scale storage infrastructure with expansion up to 336 drives.
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High-performance platform that can host the latest SAS SSDs and hard drives for maximum efficiency.
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Ideal primary storage for small and mid-size customers seeking a balance of price, performance and density.
Learn moreWhich Exos SCALE enclosure fits your capacity and rack depth?
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 |
Workloads for Exos SCALE JBOD systems
SCALE is the density layer of the Exos portfolio. These are the deployments our solution architects size it for most often.
Exos SCALE datasheets
Seagate datasheets for every SCALE system, hosted on our CDN.
Exos SCALE systems: frequently asked questions
Capacity, connectivity, efficiency and procurement answers for the Exos SCALE JBOD family.
Exos SCALE delivers high-density JBOD storage with 24G SAS throughput, software-defined flexibility and future-ready design to reduce TCO at scale. It is the Exos family for relentless data growth that demands utmost density — systems engineered for peak capacity at scale for hyperscale and enterprise data centers.
Five systems: Exos SCALE EX2U12 (2U, 12 bays), EX2U24 (2U, 24 bays), EX4U74 (4U, 74 bays), EX5U84 (5U, 84 bays) and DC4U100 (4U, 100 bays). EX4U74 and DC4U100 are the newest SAS-4 platforms and reach 3.2PB in a single enclosure.
Exos SCALE EX4U74 and DC4U100 deliver industry-leading capacity of 3.2PB in a single enclosure, engineered by Seagate and built to accommodate today’s largest drives and tomorrow’s innovations. EX2U12, EX2U24 and EX5U84 support expansion up to 144, 144 and 336 drives respectively.
The 12Gb/s SAS systems yield an effective maximum throughput of 14.4GB/s in a single I/O module or 28.8GB/s in a dual controller configuration. EX4U74 and DC4U100 use advanced SAS-4 architecture to deliver double the data throughput of previous SAS-3 systems.
Exos SCALE EX4U74 and DC4U100 support deployment of either SAS or SATA drives, with pre-configured SAS zoning for streamlined deployment. EX2U12, EX2U24 and EX5U84 are SAS platforms.
Exos SCALE EX4U74 and DC4U100 deliver up to 30% lower power consumption and 70% improved cooling efficiency compared to previous generations, with optimized airflow and best-in-class watts-per-terabyte performance. Power supplies are available in 80 PLUS Gold, Platinum and Titanium ratings with certified adaptive cooling technology.
Yes. Seagate Mozaic™ hard drives with 50TB and beyond are on the horizon, and Exos SCALE EX4U74 and DC4U100 are engineered to meet their full potential — offering long-term scalability without disruptive infrastructure overhauls.
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 for a validated SCALE configuration and authorized-reseller pricing.
Request an Exos SCALE quote
Our storage specialists are here to help you find the right solution for your data challenges. Request a validated Exos SCALE configuration and authorized-reseller pricing from a BlueAlly solution architect.
No-cost architecture assessment
Right-sized SCALE enclosure and drive configuration
Capacity, power and watts-per-terabyte projection
Flexible procurement — CapEx or OpEx
Talk to an Expert
with a BlueAlly Solution Architect