IBM Systems magazine, Mainframe - January/February 2019 - RZ7

the likelihood of encountering
problems and errors that affect
other parts of the business.
Some Z clients may want to
embrace DevOps but they may not
see a path forward; specifically,
they may not understand how to
retool their development processes
to reap the benefits of modernizing their large monolithic legacy
applications, and avoid the consequences that Baker cites. For these
clients, the key to moving forward
is to learn about the tools and processes that are in place and evolving to bring DevOps to legacy applications. Later in this article, we will
suggest an approach to cross what
appears to be a chasm between
past and present development
practices in small and measured
steps; this approach is available to
almost every organization.

The DevOps-Friendly
Mainframe
We associate DevOps friendliness
with modern systems like IBM Z.
"The mainframe has evolved along
with all of the rest of the IBM
servers. So, it's the most modern
hardware. It's the most modern
system. It just happens to be larger, provide more reliability characteristics and scalability within
the box itself rather than having to
scale out," Radcliffe says.
Cloud-friendliness, a quality
that we normally associate with
DevOps, is a byproduct of that
ability to scale up. Since its ear-

liest days, the IBM mainframe
has been able to draw resources
from a pool and to dynamically
grow and shrink its use of those
resources. Other characteristics of
a cloud-self-service, on-demand
service and measured service-are
built into the architecture. Scaling
out to increase reliability, availability and serviceability (RAS)
isn't required. The IBM Z platform
provides tremendous robustness
through decades of continuous
RAS improvement.
Beyond the hardware architecture and the RAS capabilities, the
Z flagship OS z/OS* supports a full
DevOps development pipeline. In
particular, it supports 64-bit Java*,
C, C++ and UNIX* APIs, and hosts
commercial and open-source software. The Z platform also supports
Linux running in an LPAR. That
makes available the very large set of
development and deployment tools
that have shaped the DevOps landscape. These tools include Git for
source-code management, Jenkins
to build, deploy and automate software projects, the popular Groovy
and Python programming languages, and too many more to list.
An additional way that IBM and
the Open Mainframe Project are
bridging the gap between old and
new ways of doing DevOps is with
the recently launched Zowe framework. Zowe as an open-source
software framework that provides
solutions that allow development
and operations teams to securely

manage, control, script and develop on the mainframe. It's the first
open-source project based on z/OS
(bit.ly/2Ez9Zd2
y/
)). Through fostering
of community, Zowe aims to drive
awareness, adoption and innovation
of the modern mainframe.

Legacy Applications
Also Benefit
While a modern architecture and
open-source support for a plethora of DevOps tools may make the
mainframe a desirable platform
for developing modern software,
the path to modernizing their
legacy applications isn't always
clear. And what exactly makes an
application modern? Baker sees
modern development processes as
informing "how you innovate, how
you operate and engage with clients
and how you generate new value
across a broad ecosystem." Several
questions naturally arise from this
view of a digital transformation.
"How can we and our clients use
technology and capabilities such
that they can deliver new services
that are more engaging with their
customers? How do you get very
tied to what that customer really
needs in the moment when they
need it and at the right price and at
the right point physically? How can
our clients can go about creating
new business models with their
ecosystem partners?" he asks.
APIs form the bridge between
what customers need and what
enterprises can provide. APIs

THE MAINFRAME HAS EVOLVED along with all of the rest of
the IBM servers. So, it's the most modern hardware. It's the most modern
system. It just happens to be larger, provide more reliability characteristics
and scalability within the box itself rather than having to scale out."
-ROSALIND RADCLIFFE, IBM DISTINGUISHED ENGINEER AND
CHIEF A RCHITECT, D E VO PS AND CLM, ENTERPRISE SYSTEMS


http://bit.ly/2Ez9Zd2

IBM Systems magazine, Mainframe - January/February 2019

Table of Contents for the Digital Edition of IBM Systems magazine, Mainframe - January/February 2019

Table of Contents
Editor's Desk: It takes a community
Currents: IBM's drive for cybersecurity training
Currents: The coffee break, elevated (literally)
Currents: Finding an effective IBM Z DevOps solution
Currents: IBM Cloud helps Kenya obtain water self-suffiency
Currents: IBM Z Open Development enables open-sourcecontinuous delivery piplines
Currents: Solutions
Partner POV: AI can help human analysts boost z/OS infrastructure performance, availability and optimization
Cover Story: The threat matrix: How DevSecOps, IBM Cloud Private and Secure Service Containers bring security to the cloud
Feature 1: Opening up the mainframe: The open-source Zowe project paves the way for a collaborative IBM Z ecosystem
TECH Showcase: Layering security throughout the enterprise stack more quickly produces better and safer code
Techbits: Open Data Analytics for z/OS provides real-time insight and heightens data security
Techbits: Understanding zIIP usage in CICS
Techbits: Ask the Expert: Zowe and z/OSMF
Techbits: Why IBM LinuxONE outperforms Linux on x86 solutions
Beyond the Box: After retiring from IBM, Jeffrey Frey persues a new career as a recording engineer
Reference Point - Global Events, Education, Resources for Power Systems
2019 Mainframe Solutions Edition
IBM Systems magazine, Mainframe - January/February 2019 - RZCover1
IBM Systems magazine, Mainframe - January/February 2019 - RZCover2
IBM Systems magazine, Mainframe - January/February 2019 - RZ1
IBM Systems magazine, Mainframe - January/February 2019 - RZ2
IBM Systems magazine, Mainframe - January/February 2019 - RZ3
IBM Systems magazine, Mainframe - January/February 2019 - RZ4
IBM Systems magazine, Mainframe - January/February 2019 - RZ5
IBM Systems magazine, Mainframe - January/February 2019 - RZ6
IBM Systems magazine, Mainframe - January/February 2019 - RZ7
IBM Systems magazine, Mainframe - January/February 2019 - RZ8
IBM Systems magazine, Mainframe - January/February 2019 - RZCover3
IBM Systems magazine, Mainframe - January/February 2019 - RZCover4
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