Stratus® ztC Endurance™

Evolutionary predictive fault tolerant computing delivering protected, serviceable performance for next generation, sustainable operations.

Stratus ztC Endurance enables organizations to run critical applications without downtime or data loss, in edge or data center environments, using intelligent, predictive fault tolerance based on Stratus’ proven redundant hardware architecture, hardened drivers, and Stratus Automated Uptime Layer with Smart Exchange™ combined with Intel RAS technology and embedded security features.

Across industries, organizations rely on the continuous availability of mission-critical applications to successfully meet the demand of “always on” operations. For these essential processes and operations, any unplanned downtime can significantly impact productivity, revenue, reputation, and
safety. For these operations, failure recovery is not good enough. Organizations running vital applications require continuous availability of data and applications and the modern infrastructure to enable failure prevention.

OT and IT teams face the challenge of delivering this reliability to both centralized and distributed locations across their operations. They often lack the technical staff needed to maintain and service complex infrastructure. Platforms running critical applications must be easy to deploy, easy to manage, and easy to service—and not just in data centers, but at the edge of corporate networks.

Stratus ztC Endurance provides continuous availability and ensures data integrity for mission-critical applications running at the edge, operations center, and data center. Delivering seven nines (99.99999%) uptime, its Automated Uptime Layer with Smart Exchange™ provides continual proactive health monitoring, automatically taking action to maintain system availability and protect against data loss when needed. Coupled with the platform’s modular design of hot-swappable customer replacement units (CRUs), ztC Endurance makes it easy for OT and IT teams to manage and support. ztC Endurance delivers the processing power and performance to host dozens of software applications as virtual machines (VMs), dramatically reducing the number of PCs or servers required for OT and IT teams to manage and maintain.

Key Benefits

  • Seven nines availability for critical applications: Built-in computing fault tolerance delivers 99.99999% availability to run critical applications.
  • No loss of data: Redundant computing architecture combined with intelligent automated management prevents in-flight data loss and ensures data integrity.
  • “Zero touch” management and support: Modular design plus pro-active remote health monitoring and self-healing simplifies system management and serviceability for both IT and OT teams.
  • Rapid modernization and workload consolidation: Modernize infrastructure and streamline operations by leveraging virtualization to consolidate multiple software workloads onto a single platform.
  • Multi-layered security: Supports multi-layered defense-in-depth approaches, with focus on both process and product security guidelines to ensure maximum protection.
  • Lower TCO: Reduce IT footprint and purchase fewer software licenses on a highly reliable platform with an expected 7-10 year lifespan, twice that of traditional servers.

Stratus ztC Endurance features

Using Stratus ztC Endurance, organizations can rapidly modernize IT infrastructure to maximize reliability, simplify manageability, and increase efficiency with minimal risk. Several key features help make ztC Endurance easy to deploy, easy to manage, and easy to service—at the enterprise data center, operations center, or edge location:

Intelligent, predictive fault tolerance

Stratus ztC Endurance delivers built-in fault tolerance
that is transparent to applications without any scripting or modification. Stratus’ Automated Uptime Layer with Smart Exchange™ (AUL – Smart Exchange) software automatically manages system resources to ensure continuous availability while providing a single system image to operating systems, applications, and users. AUL – Smart Exchange monitors nearly 500 alarm points to predict and avoid a potential failure before it occurs, taking action before operations are impacted.

Proactive health monitoring

Stratus ztC Endurance delivers automated self-monitoring, alerting, self-diagnosing, and remediation capabilities. Using the Stratus ActiveService™ Network (ASN) or an organization’s existing monitoring methods, Stratus, partners and/or customers can receive platform health information and alerts. In most cases, the AUL – Smart Exchange identifies and resolves potential issues before they occur while keeping the appropriate teams informed at all times.

Industry standard components

Stratus ztC Endurance is engineered with the highest
quality industry-standard components – Intel chipsets,
RDIMMs, I/O cards, network cards, and NVMe drives.
The platforms run standard shrink-wrapped operating
systems and hypervisors, support industry-standard
application programming interfaces (APIs), and
cybersecurity software for ease of management, open
interoperability, remote management, and security.
Stratus builds on this design with its hardened drivers
and built-in fault tolerance.

Workload consolidation

Stratus ztC Endurance offers the flexibility to run critical
applications on bare metal – with the choice of industry-standard operating systems from Microsoft or RedHat – or to consolidate workloads with the hypervisor of your choice – whether VMware vSphere or Microsoft Windows Server with Hyper-V. With built-in virtualization, teams can easily consolidate multiple servers and devices onto a single, fault tolerant platform, allowing them to run more applications, improve performance, reduce total IT footprint and costs while ensuring application availability and uptime.

Manageable and serviceable by OT and IT

Status ztC Endurance simplifies manageability with remote monitoring capabilities and management APIs interoperable with standard systems. ztC Endurance is also easily serviceable without specialized IT skills or tools. The platform features four pairs of hot swappable customer replaceable unit (CRU) modules. When a CRU module is replaced, the system automatically returns the module to operation, making ztC Endurance ideal for
environments with limited IT resources.

Modular design with redundant CRU modules

Each ztC Endurance platform has four pairs of identical
customer replaceable unit modules (CRU modules)—two
compute modules, two storage modules, two I/O modules, and two power supply modules. Together with the AUL – Smart Exchange, the redundant pairs of CRU modules act as a single system maintaining 99.99999% availability.

Stratus ztC Endurance models

Stratus ztC Endurance platforms are easy to deploy, easy to manage, and easy to service. We offer three different ztC Endurance models to meet the workload, environment, and budget of today’s application dependent enterprises and edge locations.

Stratus ztC Endurance 3100

Affordable performance for stable, fixed
standalone applications in remote offices,
branch offices, or shop floor locations

Stratus ztC Endurance 5100

Versatility and flexibility for rapidly growing
or evolving applications in regional offices,
remote plants, or regional data centers

Stratus ztC Endurance 7100

High performance for high volume data- or
transaction-intensive applications in large remote plants or corporate data centers

ztC Endurance System Specifications 3100 5100 7100
Compute Module
Processor(s) 1 x Intel® Xeon® Silver 4410Y
processor 2.0 GHz
2 x Intel® Xeon® Silver 4410Y
processor 2.0 GHz
2 x Intel® Xeon® Gold 5418Y
processor 2.0 GHz
All Core Turbo Max Frequency
Max Turbo Frequency
2.8 GHz
3.9 GHz
2.8 GHz
3.9 GHz
2.8 GHz
3.8 GHz
Intel® Hyper-threaded Cores 12 per processor/
12 per compute module
12 per processor/
24 per compute module
24 per processor/
48 per compute module
Threads 24 per processor/
24 per compute module
24 per processor/
48 per compute module
48 per processor/
96 per compute module
Min/max memory 64 GB / 256 GB DDR5 RDIMMS 128 GB / 512 GB DDR5 RDIMMS 256 GB/ 1024 GB DDR5 RDIMMS
Intel UPI speed 16 GT/s 16 GT/s 16 GT/s
Maximum memory bandwidth 4000 MT/s 4000 MT/s 4000 MT/s
USB Port 2 USB 3.0 (non-redundant)
per compute module
2 USB 3.0 (non-redundant)
per compute module
2 USB 3.0 (non-redundant)
per compute module
I/O Module
Integrated PCIe® adapter slots 5 PCIe 4 x8
per I/O module
5 PCIe 4 x8
per I/O module
5 PCIe 4 x8
per I/O module
10 Gb Ethernet ports 4 / 2 per I/O module 4 / 2 per I/O module 4 / 2 per I/O module
1 Gb Ethernet management ports 2 / 1 per I/O module 2 / 1 per I/O module 2 / 1 per I/O module
10 Gb dual-port Ethernet server
PCIe adapter (fiber & copper)
Up to 5 optional per I/O module1
Storage Module
Internal system drive bays 6 per storage module 6 per storage module 6 per storage module
Internal 2.5″ drives Please visit for a complete list of supported disk drives
Alerts & Notifications SNMP support, email alerts, REST API, and ActiveService Network (ASN)
Baseboard management controller Standard Standard Standard
Virtual Technician Module (VTM) Standard Standard Standard
Graphics adapter 1 VGA port per system 1 VGA port per system 1 VGA port per system
USB ports 1 USB 2.0 (redundant) per system 1 USB 2.0 (redundant) per system 1 USB 2.0 (redundant) per system
Hot-swappable components Compute module, storage module, I/O module, PSU, drives, RDIMMS
Operating System2
Microsoft Windows Server with optional Hyper-V® virtualization
VMware vSphere vSphere vSphere
Red Hat Enterprise Linux Enterprise Linux Enterprise Linux
Power and Packaging
Input voltage 100-127, 200-240 VAC;
50 Hz, 60 Hz
200-240 VAC;
50 Hz, 60 Hz
200-240 VAC;
50 Hz, 60 Hz
System dimension (H x W x D) 3.43″ (2U) x 17.6″ x 35.83″ 3.43″ (2U) x 17.6″ x 35.83″ 3.43″ (2U) x 17.6″ x 35.83″
Weight (fully loaded including rails) 34 kg (75 lbs.) 35 kg (78 lbs.) 35 kg (78 lbs.)

1 VMware vSphere limits to no more than three 10 Gb dual-port Ethernet server PCIe adapter cards per I/O module.
2 Please visit our Stratus support page for a complete list of supported Operating Systems. For information about model availability, contact your local distributor.
Seven nines (99.99999%) availability of the Stratus ztC Endurance computing platform is based on requirements that customers use parts authorized for Stratus ztC Endurance, maintain an active Stratus Support contract, and perform system updates recommended by Stratus.​
For information about model availability, contact your local distributor.

Stratus support

From basic support plans to value added managed and professional services — get the additional capabilities you need to satisfy your unique enterprise and Edge Computing requirements.

Stratus Services for ztC Endurance

Similar to all Stratus computing platforms, Stratus offers a variety of certified options to ensure your systems are up-to-date and operating at peak efficiency. You’ll get the help you need when you need it. Total Assurance and Extended Platform Support managed plans are available for different applications, environments, and use cases. More+

Find out more

For more information, or to purchase Stratus products, please call 1-800-STRATUS, or visit

Related Assets