Meet the 2 Newest Mainframes

The z15 T02 is the new rev on the z15 previously released. The  LinuxONE 111 LT2 is built on the new z15 and runs a built-in Red Hat distribution of Linux.

z15 T02  and LinuxONE 111 LT2 

The initial z15 was introduced last fall not as the biggest z in terms of capacity, speed, and performance but as a machine IBM stated at the time was a new enterprise platform delivering the ability to manage the privacy of customer data across hybrid multicloud environments. With the z15, clients can manage who gets access to data via policy-based controls, with an industry-first capability to revoke access to data even across the hybrid cloud. All that and more is included in the new version,

The new z15 T02 is still built on the same chips but is a bit different. For starters, it is an air cooled, single frame machine. But they brought over many of the capabilities built into the original z15, including Cloud native development and deployment, encryption everywhere protecting eligible data, and resiliency and availability, while sticking it into a simplified package. Some of these capabilities, like pervasive encryption,  go back to the z14 but it is nice to see them in the slimmed down 19” frame.

Somehow it should cost less but it might not. The new z15 T02 also qualifies for what IBM refers to as a new Technology Transition Offering (TTO) for the z15 Model T02 called Technology Update Pricing (TU8). Technology Update Pricing for the z15 Model T02 uses the reporting mechanisms and existing MSU per hour tiers of the Advanced Entry Workload License Charges (AEWLC) pricing metric while extending the software price-performance that is provided by AEWLC.

Since the z15 Model T02 is a z/OS machine it also participates in IBM’s various pricing schemes which the company cannily crafts to discount some aspects of the machine in select circumstances.  

The LinuxONE 111 LT2, which, with luck,  is priced to try to appear to compete with x86-based Linux boxes. It supports from 4 to 65 IFLs. In terms of memory, it ranges from 2 TB to 16 TB. Try getting that in a cheap single chassis x86 Linux box. It also comes with IBM Secure Execution for Linux, which provides scalable isolation for individual workloads to help protect from insider attacks. IBM Secure Execution can help protect and isolate workloads on-premises for IBM LinuxONE and IBM Z hybrid cloud environments.

The new LinuxONE model also is part of the recent Confidential Computing industry  movement around using technology to protect data in-use. IBM’s Secure Execution for Linux furthers the Confidential Computing agenda through the implementation of a new hardware-based Trusted Execution Environment (TEE) on the IBM Z and LinuxONE platforms. Hardware enabled protections such as Secure Execution can move companies closer to realizing a Zero Trust environment through isolation and access control over their data assets.

The new machines also are designed not only for hybrid clouds but for cloud-native development. For that you can chose from most of the latest tools: Elastic, Spunk, OPENAPI, Zone, git, Jenkins, docker, kubernetes, Open Service Broker, Postgre SQL, mongoDB, and more.

In terms of cloud native development, IBM promises:

  • Unparalleled trust and security for mission-critical workloads and data.
  • Integrated IBM z/OS data and apps with cloud native apps.
  • New containerized services with built-in, cutting-edge security and resiliency to foster new business models.
  • Integrated with a cloud orchestration layer and Kubernetes via Red Hat OpenShift and IBM Cloud Pak on IBM Z.
  • Managed cost growth with IBM Z Tailored Fit Pricing.
  • Cuts time to market by 52%  on a single system.

IBM has been offering what it calls pervasive encryption since the z14.  With the new machines that has morphed into what IBM refers to as Encryption Everywhere, which entails;

  • Hardware accelerated encryption
  • File or data set encryption
  • Database encryption
  • Protected key for high speed encryption
  • Data-centric security
  • Controlled access to diagnostic data shared with partners and ecosystems

Finally, among the z goodies IBM has packed into the new machines is IBM Z Instant Recovery, which uses technologies available exclusively on IBM z15 to minimize the duration and impact of downtime and accelerate the recovery of mission-critical applications; with no increase in IBM software licensing costs or MSU consumption. Among its benefits is to  return to your pre-shutdown SLAs in up to 50 percent less time.

DancingDinosaur is Alan Radding, a veteran information technology analyst, writer, and ghost-writer. Follow DancingDinosaur on Twitter, @mainframeblog, and see more of his work at 

One Response to “Meet the 2 Newest Mainframes”

  1. Steve Bartlett Says:

    Alan, I hate to be picky and only because I respect you so much BUT you are incorrectly identifying the new (no more Rockhopper) LinuxONE as numeric 111, instead of the alpha III. Tsk tsk brother.
    One thing I noticed in other literature was that the performance of the T02 was compared back to the z13, and not the z14, so I am guessing it’s negligibly faster. Comment?

    Steve Bartlett
    Stay well.

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