What is IT resiliency?

Whether on-premises or in the cloud, your IT resiliency is your ability to adapt to planned or unplanned events while keeping services and operations running continuously.

When you have the highest IT resiliency, your data remains available, your IT infrastructure stays operational, disruptions are minimized, and service levels are restored quickly.

What’s the risk of downtime?

In today’s world, where “always on” has become the status quo, downtime is increasingly expensive and unacceptable. Businesses must reinforce their IT resiliency to avoid lost revenue, regulatory penalties and damaged reputations.

Lost revenue

88% of businesses lose USD 300,000 per hour and 40% lose USD 1.5 million or more.¹

Regulatory penalties

Government regulation, monitoring and inspection add pressure to deliver continuous availability.

Damaged reputations

Customers expect 24x7 availability. If a digital service is unavailable, the backlash can be swift.

What IBM Z offers for resiliency

Resilient platform

The new IBM z15™ is designed for the highest security, agility and server resiliency for your mission-critical applications — and it extends that protection across your hybrid multicloud environment.

IBM z15 solutions are designed to deliver 99.99999%* availability and IBM Z Instant Recovery can minimize downtime and speed the return to your pre-shutdown SLAs by up to 2X.

Resilient technologies

Learn about technologies that help IBM Z run continuously.

Resilient OS

See what’s possible with a more secure and resilient operating system.

Resilient storage

Rely on storage designed for 24/7 availability and resiliency.

Explore more capabilities to prevent downtime

Continuous availability

IBM Z offers superb qualities of service on- and off-prem, and new technologies like AI, machine learning and containers. Customers report only 8.8 seconds of annual downtime; that’s 99.9999% uptime.*

Disaster recovery

Disaster recovery on IBM Z and GDPS allows organizations to run services without disruption and rapidly resume mission-critical functions in the event of a disaster. 

Resiliency in cloud

Your services must run without disruption. IBM Z is designed to deliver the highest server resiliency, availability and recovery capabilities in hybrid cloud environments, so you can meet the most stringent SLAs.

Hear from a customer

With powerful, reliable and resilient IBM Z solutions, we ensure that we can weather almost any storm

Raúl Cruz Franqui, CIO, Department of the Treasury of Puerto Rico


z15™ Redbook

See how you can achieve zero downtime and sleep well at night with a resilient server platform.

IT services case study

"The performance, availability and stability offered by IBM Z are second to none."

GDPS® Redbook

Achieve your defined goals for disaster recovery and high availability.

* 99.99999% disclaimer: Internal data based on measurements and projections was used in calculating the expected value. The z15 servers must be configured in a parallel sysplex using z/OS 2.3 or above; GDPS management of data and middleware recovery across Metro distance systems and storage, including GDPS Metro Multi-site Workload and GDPS Continuous Availability; and DS888X with IBM HyperSwap. Necessary resiliency technology must be enabled, such as System Managed CF Structure Duplexing, Sysplex failure management and Capacity Provisioning Manager. Other configurations may provide different availability characteristics.