IBM Systems Magazine, Mainframe - May/June 2018 - 24

Each chip includes an area
designated to handle requests for
encryption, explains Baker. The
encryption moves up the stack
through the millicode, the VM
layers and the virtualization layers
into the Linux stack. In contrast,
x86 uses an encryption engine
that's shared by all of the cores.

IBM Z: Better by Design
Technology makes the IBM Z
server better than x86, according
to Gerald Hosch, worldwide sales
enablement for Linux on IBM Z.
IBM Z incorporates technical
advancements including
optimized processor cache
structures, single instruction,
multiple data (SIMD) and
simultaneous multithreading
(SMT) instructions to maximize
throughput. Faster I/O and
more highly available memory
capabilities provide extra
support. Accelerated encryption
on every core enables fast
encryption and improved
security. "The IBM Z server
is a modern system using
state-of-the-art technology,"
notes Hosch. "It's great to see
how much innovation is built
into IBM Z."
Common technology underpins
the IBM Z and LinuxONE
systems. The IBM Z server can
accommodate Linux, z/OS
and other OSes colocated and
integrated on the same server. The
LinuxONE server is designed for
Linux OS-only workloads.
IBM Z design features several
differences compared to x86.
With IBM Z, the core processing
engines are used for business
logic. IBM z14* and LinuxONE
Emperor systems, for example,
have 170 processing cores. Each

is complemented by two more
cores that act as I/O channel
processors. In total, more than
320 nonprocessing cores are used
inside to offload work from the
main core processors.
When a business logic core
asks for data, it makes the request
to the I/O cores. This design
allows the IBM Z server to scale
as demand spikes. Typically,
x86 systems require additional
hardware to scale. With
IBM Z, you don't need to add more
servers and networking.
Linux on IBM Z benefits
many applications. IBM
Warehouse, Db2*, Oracle and
MongoDB are popular database
applications. The IBM Z system
can accommodate open-source
MongoDB databases as large as
17 TB, notes Jollans. When run on
x86, large MongoDB files must be
split up into sub databases across
several systems or "sharded." This
can cause delays in data retrieval
as well as introduce potential
security exposures.
Further, the LinuxONE system
shares the IBM Z reputation for
reliability and high availability
because both feature IBM's
Geographically Dispersed Parallel
Sysplex* (GDPS). GDPS gives
clients hot standbys to reduce the
downtime from an outage. GDPS
also enables clients to centrally
manage the capabilities for
running mixed workloads on z/OS
and Linux, notes Hosch.

Comparing the TCO
of Z Versus x86
Clients can compare systems
by calculating the total cost of
ownership (TCO) over a three- to
five-year period, says Baker. The
calculation should include all of

24 // MAY/JUNE 2018 ibmsystemsmag.com

ยป

Currently, more
than

30%
of the worldwide
deployed
mainframe
capacity runs
Linux

the costs of operating Linux and
the software stack on Z versus
x86. Software licensing and
systems administration skills,
not just acquisition costs, must
be considered. The TCO should
incorporate the cost of upgrades.
IBM's approach to upgrades and
growth can yield significant cost
differences when compared to the
purchase of commodity hardware
and systems.
Operating one large system
reduces costs, says Hosch. The
savings comprise servers, cables,
switches, and routers that won't
be required with a single-server
system. Maintenance expenses may
be reduced. Many performance
and operational cost benefits can
be achieved by colocation. Further,
clients may see lower software
costs as licensing fees for Linux are
usually priced per core.
The benefits of security,
reliability and availability should
be considered, too. Because SLAs
can be easily met by running
Linux on Z, this positively impacts
the bottom line as well.
Clients can rely on access
to applications, solutions and
software products from IBM, ISVs
and the open-source community.
IBM's experience and support
for Linux and z/OS will benefit
clients, too.
Linux on Z gives clients a familiar
look and feel to the mainframe
system. Any client that uses
Docker, Kubernetes and the most
current DevOps tool chains can run
those applications on IBM Z and
LinuxONE to get the familiarity
of Linux on a more robust,
trustworthy and efficient system.
Shirley S. Savage is a Maine-based
freelance writer.


http://www.ibmsystemsmag.com

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - May/June 2018

Table of Contents
Editor's Desk: Good things in small packages
Trends: IBM LinuxONE and Linux on Z offer a differentiated infrastructure and open standards for running a premium microservices cloud
Currents: RACF offers different options to ensure a secure IBM Z system
Partner POV: Linux on IBM Z postitions clients to move forward with modern technologies and workloads
Cover Story: Flexibility Counts: Why clients rely on Linux on IBM Z and LinuxONE to deliver business value
Feature: Fresh, Flexible and New: IBM z14 Model ZR1 boasts more capacity in a smaller foorprint
Tech Showcase: How DevOps helps organizations keep up with the quickening pace of competition
Tech Corner: Engage IBM Db2 V12 for mobile with z/OS Distributed Data Facility or z/OS Connect
Administrator: Single-frame IBM z14 Model ZR1 brings the benefits of IBM Z to organizations of all sizes
Solutions: CleverView for TCP/IP on Linux V2.9, VitalSigns for FTP V3.1
Stop Run: Growing up around computers and the IBM culture led Matthew Cousens to work with the mianframe
Reference Point - Global Events, Education, Resources for Power Systems
2018 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - May/June 2018 - Intro
IBM Systems Magazine, Mainframe - May/June 2018 - Cover1
IBM Systems Magazine, Mainframe - May/June 2018 - Cover2
IBM Systems Magazine, Mainframe - May/June 2018 - 1
IBM Systems Magazine, Mainframe - May/June 2018 - Table of Contents
IBM Systems Magazine, Mainframe - May/June 2018 - 3
IBM Systems Magazine, Mainframe - May/June 2018 - Editor's Desk: Good things in small packages
IBM Systems Magazine, Mainframe - May/June 2018 - 5
IBM Systems Magazine, Mainframe - May/June 2018 - Trends: IBM LinuxONE and Linux on Z offer a differentiated infrastructure and open standards for running a premium microservices cloud
IBM Systems Magazine, Mainframe - May/June 2018 - 7
IBM Systems Magazine, Mainframe - May/June 2018 - 8
IBM Systems Magazine, Mainframe - May/June 2018 - 9
IBM Systems Magazine, Mainframe - May/June 2018 - Currents: RACF offers different options to ensure a secure IBM Z system
IBM Systems Magazine, Mainframe - May/June 2018 - 11
IBM Systems Magazine, Mainframe - May/June 2018 - 12
IBM Systems Magazine, Mainframe - May/June 2018 - 13
IBM Systems Magazine, Mainframe - May/June 2018 - Partner POV: Linux on IBM Z postitions clients to move forward with modern technologies and workloads
IBM Systems Magazine, Mainframe - May/June 2018 - 15
IBM Systems Magazine, Mainframe - May/June 2018 - Cover Story: Flexibility Counts: Why clients rely on Linux on IBM Z and LinuxONE to deliver business value
IBM Systems Magazine, Mainframe - May/June 2018 - 17
IBM Systems Magazine, Mainframe - May/June 2018 - 18
IBM Systems Magazine, Mainframe - May/June 2018 - 19
IBM Systems Magazine, Mainframe - May/June 2018 - Feature: Fresh, Flexible and New: IBM z14 Model ZR1 boasts more capacity in a smaller foorprint
IBM Systems Magazine, Mainframe - May/June 2018 - 21
IBM Systems Magazine, Mainframe - May/June 2018 - 22
IBM Systems Magazine, Mainframe - May/June 2018 - 23
IBM Systems Magazine, Mainframe - May/June 2018 - 24
IBM Systems Magazine, Mainframe - May/June 2018 - Tech Showcase: How DevOps helps organizations keep up with the quickening pace of competition
IBM Systems Magazine, Mainframe - May/June 2018 - 26
IBM Systems Magazine, Mainframe - May/June 2018 - 27
IBM Systems Magazine, Mainframe - May/June 2018 - 28
IBM Systems Magazine, Mainframe - May/June 2018 - 29
IBM Systems Magazine, Mainframe - May/June 2018 - Tech Corner: Engage IBM Db2 V12 for mobile with z/OS Distributed Data Facility or z/OS Connect
IBM Systems Magazine, Mainframe - May/June 2018 - 31
IBM Systems Magazine, Mainframe - May/June 2018 - 32
IBM Systems Magazine, Mainframe - May/June 2018 - 33
IBM Systems Magazine, Mainframe - May/June 2018 - 34
IBM Systems Magazine, Mainframe - May/June 2018 - Administrator: Single-frame IBM z14 Model ZR1 brings the benefits of IBM Z to organizations of all sizes
IBM Systems Magazine, Mainframe - May/June 2018 - 36
IBM Systems Magazine, Mainframe - May/June 2018 - 37
IBM Systems Magazine, Mainframe - May/June 2018 - 38
IBM Systems Magazine, Mainframe - May/June 2018 - Solutions: CleverView for TCP/IP on Linux V2.9, VitalSigns for FTP V3.1
IBM Systems Magazine, Mainframe - May/June 2018 - Stop Run: Growing up around computers and the IBM culture led Matthew Cousens to work with the mianframe
IBM Systems Magazine, Mainframe - May/June 2018 - Cover3
IBM Systems Magazine, Mainframe - May/June 2018 - Cover4
IBM Systems Magazine, Mainframe - May/June 2018 - Reference Point - Global Events, Education, Resources for Power Systems
IBM Systems Magazine, Mainframe - May/June 2018 - 2018 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - May/June 2018 - SE2
IBM Systems Magazine, Mainframe - May/June 2018 - SE3
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