Deliver security, privacy and resiliency at scale as part of your enterprise-wide cloud infrastructure. The IBM z15® enables cloud-native services while extending the value of data and applications. So you can drive to market faster, while avoiding cloud security risks and complex migration challenges.
The IBM z15 introduced Instant Recovery technologies to IBM zSystems™. It is superseded by the IBM z16™.
Learn about how digital transformation requires agility and flexibility of the public cloud while integrating with critical systems of record on-premises.
Read the Secure Hybrid Cloud for Dummies eBook
Browse the IBM Z and Cloud Modernization Resource Center
Build digital and AI-infused services that are developed — and deployed — anywhere in your cloud.
Protect your data and applications, and manage privacy by policy, across your ecosystem.
Isolate workloads at scale, protect against attacks, deliver continuous service, and mitigate downtime.
Get a z15 system for any business size, available through public, private or hybrid cloud.
Make app modernization a snap so your business stays up to date.
Get greater flexibility, portability and consistency when developing and deploying new digital and AI-infused services.
Enable extensive encryption of data in-flight and at-rest to substantially simplify encryption and reduce costs.
Unlock system capacity to deliver faster recovery, reducing points of failure and building a 24x7x365 operation.
IBM Z is trusted by businesses of all sizes, and IBM z15 can make resources available on demand and speed up execution time for various workloads.
IBM Secure Execution enables isolation of workloads with granularity and scale to ensure protection of end-to-end services.
Choose from two IBM z15 configurations.
Product specifications
IBM z15 T01 multi frame
IBM z15 T02 single frame
Maximum numbers of engines
190
65
Maximum numbers of drawers
4
2
Maximum numbers of IO drawers
12
3
Numbers of frames
1 to 4
1
Co-locate with storage/switch
No
No
Frequency
5.2 GHz
4.6 GHz
Maximum memory
40 TB
16 TB
Sizes
34, 71, 108, 145 and 190
4, 13, 21, 31 and 65
Specifications sheets
Interactive tour
Technical guides
Protect your IBM zSystems investment with support and services to keep your system running optimally.
See our flexible model for simpler, more economical IBM zSystems pricing.
Enabling consistently fast and productive DevOps across the enterprise.
Accelerating development while cutting costs and improving product quality.
The Brazilian bank uses the resiliency of IBM Z to handle 1.5 billion monthly transactions.
A financial services provider gains data security and peace of mind for retail banking customers.
The computer consulting company uses IBM Z for AIOps to elevate their hybrid cloud workload.
One of the Republic of Ireland’s biggest bank uses the agility of IBM Z to deliver open banking and new functionality.
A bank holding company leverages Z Digital Integration Hub to deliver more accurate business outcomes and a better user experience.
Understand how to install, configure and maintain the IBM z15 (machine types 8561 and 8562) systems.
Quickly understand the features, functions and connectivity options that are available with the IBM z16m, IBM z15 and IBM z14.
Explore answers to the frequently asked questions about IBM z15.
See how you can achieve up to 30% savings by upgrading to IBM z15.
Accelerate transformation in your IBM Z environment with expert resources, guidance and capabilities.
Get up and running faster during planned maintenance or unplanned downtime.
Accelerate decision velocity, protect against threats across your business and modernize for hybrid cloud.
Reduce your energy costs and carbon footprint while increasing performance, data protection and customer satisfaction.
Accelerate application modernization and take a standardized approach to IT automation on IBM zSystems technology.
The fastest, most reliable and secure storage systems for IBM zSystems and IBM Power® systems.
Cost-effectively include new technologies such as Java and Python in your application portfolio using zIIPs.
Accelerate your digital transformation with application insights that increase productivity and reduce risk.