IBM Systems Magazine, Mainframe - May/June 2016 - 25

As evidenced by numerous
real-world use cases, IBM z can
support consolidation of hundreds
of commodity scale-out Linux
servers, with core ratios averaging
around the order of 10-to-1.

Today's digital business workloads
are frequently hybrid in that
they have multiple components,
typically serving SoR and SoE
functionality. With scale-out
servers, the components must
span across multiple physical
servers. On IBM z, they can run
in neighboring LPARs, which is
more advantageous because there
is no physical network. LPAR-toLPAR communication is done at
memory speed over the internal
HiperSockets* LAN built into the
system. There's no overhead of
a physical connection, thereby
minimizing latency, and no
physical exposure to potential
security threats. This mode of
communication is also transparent
to the applications running.
IBM has demonstrated
the advantages of co-located
hybrid workloads using the
IBM MobileFirst* Platform
Foundation (MFPF) server-which
runs on Linux-and a mobiledriven workload. When the MFPF
server was co-located on Linux
on z Systems with a z/OS-based
CICS* core banking back end,
the throughput transaction rate
was twice that of when the MFPF
server ran on a separate x86
server. The co-location case also
delivered 31 percent lower cost
per transactions per second.
In another test, an online
transaction processing (OLTP)
database was set up in a Linux on
z Systems LPAR. An Apache Spark
application was developed to run
analytics queries against that
database. The Spark queries were
run from a separate x86 server as
well as in a co-located LPAR on the

Figure 1: IBM z Scaling Support
Vertical
scaling
Horizontal scaling
Add more
resources to
an existing
Linux guest

- or clone more Linux guests with a high degree
of resource sharing

same server as the OLTP database.
IBM found that Spark running on
IBM z with the database drove up
to 3x more throughput than when
Spark ran off of the platform on
the x86 server.

One of the best methods for
comparing different platforms
is total cost of ownership (TCO),
where hardware and software
acquisition costs are coupled
with factors like labor, facilities
and power, networks, storage,
non-production environments,
growth plans, migration costs,
availability requirements and
extra security requirements.
Infrastructure costs are often
thought of as the most expensive
part of TCO, but software costs-
especially when priced per core-
are often the steepest.
Large-scale consolidation on
IBM z will drive up utilization and
reduce core requirements, thus
lowering software costs. In-house
case studies have demonstrated
this. A total of 123 variable
workloads required 264 cores on
11 x86 servers, producing a threeyear TCO of $10.6 million. On an
IBM z13 system running Linux,
these workloads required only 32
cores, resulting in a three-year TCO
of $7.2 million, or 32 percent less.
Even though the infrastructure
costs of the z13 platform were
about 5x more than the x86

servers, the substantial reduction
in cores led to a 72 percent
reduction in software costs, which
brought down the entire TCO.

It's clear that Linux on IBM z is an
outstanding alternative to scaleout x86 servers: IBM z is supported
by standard distributions from
Red Hat, SUSE and Canonical
Ubuntu; over 3,000 Linux
applications (e.g., Oracle
database) from hundreds of ISVs
are available for the platform; and a
wide array of open-source software
is supported. Furthermore, IBM
internal testing has shown that
Linux on z Systems outperforms
x86 servers in a variety of
middleware tests.
It is also a better choice than
scale-out x86 servers for large
cache- or I/O-intensive workloads
like database applications or
transaction processing, or for
consolidation of large numbers
of low utilization servers. Colocating hybrid workloads on
IBM z also typically delivers
faster throughput and reduced
costs. Lastly, with mixed
workload environments, Linux
on z Systems often delivers lower
software license costs and overall
lower TCO.
Emily Farmer is a z Systems
evangelist in the IBM
Competitive Projects Office.

ibmsystemsmag.com MAY/JUNE 2016 // 25


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IBM Systems Magazine, Mainframe - May/June 2016

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - May/June 2016

Table of Contents
Editor's Desk: Flexible and agile environment
IBM Perspective: Elevating open source for the enterprise
Partner PoV: New information about threats in the z/OS system improves performance
The new IBM z13 can consolidate Linux workloads at a lower cost
Focus on Storage: IBM Spectrum Storage Suite offers a new way of licensing storage software
Cover Story: Achieving An Advantage: Linux on z Systems enables the API economy and microservices while enhancing hybrid cloud solutions
Feature: A Better Option: Businesses see an advantage to using Linux on z Systems over scale-out servers
Tech Showcase: CISOs can mitigate mobile security fears and prevent issues in the workplace
Tech Corner: IBM DB2 on z/OS V2.2 features space and storage ehancements
Administrator: IBM Multi-Factor Authentication fo z/OS helps maintain a secure infrastructure
Solutions: Universal Data Manager; OpenLegacy V3.0
Stop Run: 19-year-old mainframe enthusiast installs a z890 in his parents' basement
Reference Point - Global Events, Education, Resources for Mainframe
2016 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - May/June 2016 - Intro
IBM Systems Magazine, Mainframe - May/June 2016 - Cover1
IBM Systems Magazine, Mainframe - May/June 2016 - Cover2
IBM Systems Magazine, Mainframe - May/June 2016 - 1
IBM Systems Magazine, Mainframe - May/June 2016 - Table of Contents
IBM Systems Magazine, Mainframe - May/June 2016 - 3
IBM Systems Magazine, Mainframe - May/June 2016 - 4
IBM Systems Magazine, Mainframe - May/June 2016 - 5
IBM Systems Magazine, Mainframe - May/June 2016 - Editor's Desk: Flexible and agile environment
IBM Systems Magazine, Mainframe - May/June 2016 - 7
IBM Systems Magazine, Mainframe - May/June 2016 - IBM Perspective: Elevating open source for the enterprise
IBM Systems Magazine, Mainframe - May/June 2016 - Partner PoV: New information about threats in the z/OS system improves performance
IBM Systems Magazine, Mainframe - May/June 2016 - 10
IBM Systems Magazine, Mainframe - May/June 2016 - The new IBM z13 can consolidate Linux workloads at a lower cost
IBM Systems Magazine, Mainframe - May/June 2016 - 12
IBM Systems Magazine, Mainframe - May/June 2016 - 13
IBM Systems Magazine, Mainframe - May/June 2016 - 14
IBM Systems Magazine, Mainframe - May/June 2016 - Focus on Storage: IBM Spectrum Storage Suite offers a new way of licensing storage software
IBM Systems Magazine, Mainframe - May/June 2016 - 16
IBM Systems Magazine, Mainframe - May/June 2016 - 17
IBM Systems Magazine, Mainframe - May/June 2016 - Cover Story: Achieving An Advantage: Linux on z Systems enables the API economy and microservices while enhancing hybrid cloud solutions
IBM Systems Magazine, Mainframe - May/June 2016 - 19
IBM Systems Magazine, Mainframe - May/June 2016 - 20
IBM Systems Magazine, Mainframe - May/June 2016 - 21
IBM Systems Magazine, Mainframe - May/June 2016 - Feature: A Better Option: Businesses see an advantage to using Linux on z Systems over scale-out servers
IBM Systems Magazine, Mainframe - May/June 2016 - 23
IBM Systems Magazine, Mainframe - May/June 2016 - 24
IBM Systems Magazine, Mainframe - May/June 2016 - 25
IBM Systems Magazine, Mainframe - May/June 2016 - 26
IBM Systems Magazine, Mainframe - May/June 2016 - Tech Showcase: CISOs can mitigate mobile security fears and prevent issues in the workplace
IBM Systems Magazine, Mainframe - May/June 2016 - 28
IBM Systems Magazine, Mainframe - May/June 2016 - 29
IBM Systems Magazine, Mainframe - May/June 2016 - 30
IBM Systems Magazine, Mainframe - May/June 2016 - 31
IBM Systems Magazine, Mainframe - May/June 2016 - 32
IBM Systems Magazine, Mainframe - May/June 2016 - 33
IBM Systems Magazine, Mainframe - May/June 2016 - 34
IBM Systems Magazine, Mainframe - May/June 2016 - 35
IBM Systems Magazine, Mainframe - May/June 2016 - 36
IBM Systems Magazine, Mainframe - May/June 2016 - 37
IBM Systems Magazine, Mainframe - May/June 2016 - 38
IBM Systems Magazine, Mainframe - May/June 2016 - 39
IBM Systems Magazine, Mainframe - May/June 2016 - Tech Corner: IBM DB2 on z/OS V2.2 features space and storage ehancements
IBM Systems Magazine, Mainframe - May/June 2016 - 41
IBM Systems Magazine, Mainframe - May/June 2016 - 42
IBM Systems Magazine, Mainframe - May/June 2016 - 43
IBM Systems Magazine, Mainframe - May/June 2016 - Administrator: IBM Multi-Factor Authentication fo z/OS helps maintain a secure infrastructure
IBM Systems Magazine, Mainframe - May/June 2016 - 45
IBM Systems Magazine, Mainframe - May/June 2016 - 46
IBM Systems Magazine, Mainframe - May/June 2016 - Solutions: Universal Data Manager; OpenLegacy V3.0
IBM Systems Magazine, Mainframe - May/June 2016 - Stop Run: 19-year-old mainframe enthusiast installs a z890 in his parents' basement
IBM Systems Magazine, Mainframe - May/June 2016 - Cover3
IBM Systems Magazine, Mainframe - May/June 2016 - Cover4
IBM Systems Magazine, Mainframe - May/June 2016 - Reference Point - Global Events, Education, Resources for Mainframe
IBM Systems Magazine, Mainframe - May/June 2016 - 2016 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - May/June 2016 - SE2
IBM Systems Magazine, Mainframe - May/June 2016 - SE3
IBM Systems Magazine, Mainframe - May/June 2016 - SE4
IBM Systems Magazine, Mainframe - May/June 2016 - SE5
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