IBM Systems Magazine, Mainframe - May/June 2015 - L9

By Shirley S. Savage
Editor's Note: This article was originally
published in September 2014.
c
hances are you're
engaging with Linux* on
a daily basis without even
realizing it. The OS plays a role in
many aspects of your day-to-day
life, from ATM transactions to
your home office printer to Web
services to your Android phone.
In just more than two decades,
Linux has become the most
sought-after open-source OS
used by companies worldwide.
IBM continues to be a proponent
of Linux, a role it adopted in
1999 when it first announced
Linux would be available on all
platforms, including z Systems*
servers. Since then, the OS has
matured from a penguin-logoed
novelty to a powerhouse system
used by enterprises as well as small
and medium businesses. "So who's
using Linux? You are," says Bill
Reeder, worldwide IT optimization
sales leader, z Systems.
Much of the interest in Linux on
z Systems is now being driven by
cloud, virtualization and server
consolidation, says Bryan Foley,
program director, z Systems
Strategy and Linux for z Systems
Business Line Manager. "The ability
to consolidate several individual
servers onto a single platform is a
first step, and customers recognize
that Linux on z Systems is a great
place to do that."
Organizations can realize
cost, security and performance
benefits by consolidating to
a single platform. One IBM
customer consolidated more than
200 x86 processors down to 17
processors on the mainframe,
saving on licensing, operational
and personnel costs. Another
company found consolidating
with Linux on z Systems
eliminated many of its technical
issues, according to Foley.
Smart move
Companies are choosing to
run Linux on z Systems to take
advantage of the mainframe's
robustness, reliability, security
and disaster recovery capabilities.
The platform is designed
to maintain transactional
throughput up to 100 percent of
CPU utilization because I/O to
disk and network are offloaded
from the transactional CPU, which
means you are getting the most
you can out of the machine. That
prevents I/O workload contention
issues and enables you to meet
your service-level agreements,
Reeder explains.
The z Systems server's flexibility
allows it to run workloads in
parallel. If one workload needs
more resources, it can take from
a lower prioritized one in order to
honor the service agreement with
the client. "That's a big benefit,"
says Gerald Hosch, worldwide
offering manager, Linux on
z Systems.
The combination also lowers
software costs. Most software is
licensed by the core and as the
mainframe core can do more,
fewer licenses are required.
"Because of the z Systems server's
high utilization of the core, you
are better leveraged in regard to
your license," Hosch notes.
Workload Prowess
The OS is also adept at handling
diverse workloads simultaneously,
which is a key reason enterprises
are running it on z Systems. The
emphasis on cloud, analytics, big
data, mobile, social and security
means that companies need Linux
technology-enabled systems
that can handle those workloads
efficiently and smoothly.
Customers are running data
services, business applications,
security and infrastructure
services, mobile application
hosting, cloud hosting,
messaging and business
process management workloads
using Linux on z Systems (see
"Workloads Available for Linux
on z Systems," page 11). "Linux
has always been important but is
becoming more so," Foley adds.
This is true for big data
and analytics workloads.
Analytics are a good fit due
the proximity to the enterprise
data on z Systems and the way
the applications are structured
and run. "The z Systems
server's thread performance,
large shared memory nest,
exceptional virtualization, highspeed
connectivity, simplified
infrastructure, reliability,
availability and security enable
analytics to be done quickly,
effectively and securely on the
platform," Foley explains.
An analytics solution might
include Cognos*, SPSS* or
DataStage* as part of the
solution, and running these in a
robust virtualized environment
on a reliable mainframe
system is an efficient way
to deploy these analytics
capabilities, Foley says.
With Hadoop processing
now available on Linux on
z Systems, clients can more
easily glean insights from
their non-relational data
(e.g., VSAM, application
logs, etc.). These insights
can be integrated back
into the systems of record,
augmenting relational data
with nuggets produced from
big data. Putting Hadoop into the
toolbox allows clients to make
use of all their mainframe data
to produce actionable insights
without that data ever having to
leave the secure zone of the box,
he adds.
It used to be that companies
moved data to where the analytics
Linux on z Systems MAY 2015 // 9
Linux hAS
bEcoME thE MoSt
Sought-AftEr
opEn-SourcE oS
uSEd bY coMpAniES
worLdwidE

IBM Systems Magazine, Mainframe - May/June 2015

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - May/June 2015

Table of Contents
IBM Perspective: A mainframe built for Generation Z
Editor's Desk: Optimistic future
Partner PoV: Now is the time for multifactor authentication
Infographic: Myths, exaggerations and uncomfortable truths
Currents: TCO for an IBM z13 cloud is lower than an x86 or public cloud, according to an IBM study
R&D: IBM Research is working to better diagnose osteoporosis -- and make computing more economical
Cover Story: Mastering the Mainframe: IBM contest connects millennials to the mainframe and potential employers
Feature: The Millennial Career Guidebook: Six groups and resources to help mainframers starting their careers
Feature: Mainframe Within Reach: IBM provides a rich set of solutions designed to help new mainframe programmers
Tech Showcase: IBM X-Force report reveals challenges and strategies to succeed in the new computing environment
Tech Corner: New IBM z13 chip improves throughput and analytics performance
Solutions: ReACT V4.0; Ivory Service Architect V4.6
Stop Run: Running and fencing keep IBMer active
Reference Point - Global Events, Education, Resources for Mainframe
2015 Mainframe Solutions Edition Product Index
Linux on z E-book
IBM Systems Magazine, Mainframe - May/June 2015 - Intro
IBM Systems Magazine, Mainframe - May/June 2015 - Cover1
IBM Systems Magazine, Mainframe - May/June 2015 - Cover2
IBM Systems Magazine, Mainframe - May/June 2015 - 1
IBM Systems Magazine, Mainframe - May/June 2015 - Table of Contents
IBM Systems Magazine, Mainframe - May/June 2015 - 3
IBM Systems Magazine, Mainframe - May/June 2015 - 4
IBM Systems Magazine, Mainframe - May/June 2015 - IBM Perspective: A mainframe built for Generation Z
IBM Systems Magazine, Mainframe - May/June 2015 - Editor's Desk: Optimistic future
IBM Systems Magazine, Mainframe - May/June 2015 - 7
IBM Systems Magazine, Mainframe - May/June 2015 - Partner PoV: Now is the time for multifactor authentication
IBM Systems Magazine, Mainframe - May/June 2015 - 9
IBM Systems Magazine, Mainframe - May/June 2015 - Infographic: Myths, exaggerations and uncomfortable truths
IBM Systems Magazine, Mainframe - May/June 2015 - Currents: TCO for an IBM z13 cloud is lower than an x86 or public cloud, according to an IBM study
IBM Systems Magazine, Mainframe - May/June 2015 - 12
IBM Systems Magazine, Mainframe - May/June 2015 - 13
IBM Systems Magazine, Mainframe - May/June 2015 - 14
IBM Systems Magazine, Mainframe - May/June 2015 - 15
IBM Systems Magazine, Mainframe - May/June 2015 - R&D: IBM Research is working to better diagnose osteoporosis -- and make computing more economical
IBM Systems Magazine, Mainframe - May/June 2015 - 17
IBM Systems Magazine, Mainframe - May/June 2015 - 18
IBM Systems Magazine, Mainframe - May/June 2015 - 19
IBM Systems Magazine, Mainframe - May/June 2015 - Cover Story: Mastering the Mainframe: IBM contest connects millennials to the mainframe and potential employers
IBM Systems Magazine, Mainframe - May/June 2015 - 21
IBM Systems Magazine, Mainframe - May/June 2015 - 22
IBM Systems Magazine, Mainframe - May/June 2015 - 23
IBM Systems Magazine, Mainframe - May/June 2015 - Feature: The Millennial Career Guidebook: Six groups and resources to help mainframers starting their careers
IBM Systems Magazine, Mainframe - May/June 2015 - 25
IBM Systems Magazine, Mainframe - May/June 2015 - 26
IBM Systems Magazine, Mainframe - May/June 2015 - 27
IBM Systems Magazine, Mainframe - May/June 2015 - 28
IBM Systems Magazine, Mainframe - May/June 2015 - 29
IBM Systems Magazine, Mainframe - May/June 2015 - Feature: Mainframe Within Reach: IBM provides a rich set of solutions designed to help new mainframe programmers
IBM Systems Magazine, Mainframe - May/June 2015 - 31
IBM Systems Magazine, Mainframe - May/June 2015 - 32
IBM Systems Magazine, Mainframe - May/June 2015 - Tech Showcase: IBM X-Force report reveals challenges and strategies to succeed in the new computing environment
IBM Systems Magazine, Mainframe - May/June 2015 - 34
IBM Systems Magazine, Mainframe - May/June 2015 - 35
IBM Systems Magazine, Mainframe - May/June 2015 - 36
IBM Systems Magazine, Mainframe - May/June 2015 - 37
IBM Systems Magazine, Mainframe - May/June 2015 - 38
IBM Systems Magazine, Mainframe - May/June 2015 - 39
IBM Systems Magazine, Mainframe - May/June 2015 - 40
IBM Systems Magazine, Mainframe - May/June 2015 - 41
IBM Systems Magazine, Mainframe - May/June 2015 - Tech Corner: New IBM z13 chip improves throughput and analytics performance
IBM Systems Magazine, Mainframe - May/June 2015 - 43
IBM Systems Magazine, Mainframe - May/June 2015 - 44
IBM Systems Magazine, Mainframe - May/June 2015 - 45
IBM Systems Magazine, Mainframe - May/June 2015 - 46
IBM Systems Magazine, Mainframe - May/June 2015 - Solutions: ReACT V4.0; Ivory Service Architect V4.6
IBM Systems Magazine, Mainframe - May/June 2015 - Stop Run: Running and fencing keep IBMer active
IBM Systems Magazine, Mainframe - May/June 2015 - Cover3
IBM Systems Magazine, Mainframe - May/June 2015 - Cover4
IBM Systems Magazine, Mainframe - May/June 2015 - Reference Point - Global Events, Education, Resources for Mainframe
IBM Systems Magazine, Mainframe - May/June 2015 - RF2
IBM Systems Magazine, Mainframe - May/June 2015 - Linux on z E-book
IBM Systems Magazine, Mainframe - May/June 2015 - L2
IBM Systems Magazine, Mainframe - May/June 2015 - L3
IBM Systems Magazine, Mainframe - May/June 2015 - L4
IBM Systems Magazine, Mainframe - May/June 2015 - L5
IBM Systems Magazine, Mainframe - May/June 2015 - L6
IBM Systems Magazine, Mainframe - May/June 2015 - L7
IBM Systems Magazine, Mainframe - May/June 2015 - L8
IBM Systems Magazine, Mainframe - May/June 2015 - L9
IBM Systems Magazine, Mainframe - May/June 2015 - L10
IBM Systems Magazine, Mainframe - May/June 2015 - L11
IBM Systems Magazine, Mainframe - May/June 2015 - L12
IBM Systems Magazine, Mainframe - May/June 2015 - L13
IBM Systems Magazine, Mainframe - May/June 2015 - L14
IBM Systems Magazine, Mainframe - May/June 2015 - L15
IBM Systems Magazine, Mainframe - May/June 2015 - L16
IBM Systems Magazine, Mainframe - May/June 2015 - L17
IBM Systems Magazine, Mainframe - May/June 2015 - L18
IBM Systems Magazine, Mainframe - May/June 2015 - L19
IBM Systems Magazine, Mainframe - May/June 2015 - L20
IBM Systems Magazine, Mainframe - May/June 2015 - L21
IBM Systems Magazine, Mainframe - May/June 2015 - 2015 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - May/June 2015 - SE2
IBM Systems Magazine, Mainframe - May/June 2015 - SE3
IBM Systems Magazine, Mainframe - May/June 2015 - SE4
IBM Systems Magazine, Mainframe - May/June 2015 - SE5
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