Learn how to be always on, build a disaster recovery plan and protect data.

What is continuous availability and disaster recovery?

Continuous availability is the ability of an IT platform to provide uninterrupted service. Hardware or software outages are rare in environments designed for continuous availability.

Disaster recovery is the ability of a platform to minimize downtime from unplanned outages. The platform quickly resumes critical functions with minimal loss to data, services or revenue.

Gain continuous availability with IBM Z

The platform for availability

IBM z15

Ensure business continuity with built-in availability in hardware and operating systems. The new IBM z15™ solutions are designed for 99.99999% availability and rapid disaster recovery.

On-off capacity on demand

Activate processor cores or memory on a temporary basis with On/Off Capacity on Demand (CoD).

Reliability, Availability, Serviceability (RAS)

Gain exceptional RAS, including self-checking and self-recovery, isolation, and diagnosis of failed components.

Parallel Sysplex

Eliminate single points of failure with IBM Z clustering technology to help you achieve near-continuous availability.

Software for availability

Optimize IT resources

Gain near real-time collection, curation and reporting for performance, cost and capacity management.

Batch resiliency

Gain real-time resiliency for batch applications by leveraging analytics to automate recovery processes.

Operations analytics

Monitor software, z/OS® and Linux® on IBM Z to detect and diagnose anomalies in near real-time.

System automation

Reduce administrative tasks and lower IT costs through Parallel Sysplex automation and policy-based automation for z/OS.

Storage for availability

Resilient data storage

Leverage a high-performance, high-capacity storage system for continuous services, security, and cyber resiliency.

Trusted data backup

The DS8000® storage system function provides backup copies to recover data in case of logical corruption or destruction of primary data.

Speed disaster recovery with IBM Z

The case for enterprise disaster recovery

When unplanned downtime occurs, the reaction time costs productivity and money. Survey respondents experienced planned or unplanned downtime at least once a quarter, costing an average of 35% more per minute than planned downtime.²

With IBM systems, storage and services, RTO is measured in hours and the RPO can be achieved in minutes after the disaster is declared.

Technologies for disaster recovery

Instant recovery

Get your critical business applications up and running faster after planned maintenance, site switching or unplanned downtime.

Automation to reduce downtime

Reduce risk with an automated solution across single and multiple sites. GDPS can reduce downtime from days to hours or even minutes.

Hear from surveyed customers

IBM’s System Z server is in a class of its own. It maintained its best in class rating among all server platforms.

ITIC, Server Reliability Poll, May 2020

Upgrade offer

Try the System Recovery Boost Upgrade for 90 days at no charge on IBM z15 T01 systems.


Department of the Treasury of Puerto Rico

Protects vital government services from natural disasters.

Application availability

Improve z/OS application availability by managing planned outages.

Technical resources

Learn how to check, predict, diagnose and recover.

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1. 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.


2. Forrester Consulting, August 2019

“The Real Costs Of Planned And Unplanned Downtime,” Forrester Consulting, August 2019 is a Forrester Opportunity Snapshot: A Custom Study Commissioned by IBM