IBM Systems Magazine, Mainframe - November/December 2016 - L7


For years, z Systems mainframes have been designed to
operate with the highest levels
of reliability and availability,
and the z13s is no different. At
the hardware level, it ships with
redundant cores, which guarantees continuous availability, even
in the rare event of hardware
failure. Further, redundancy
in the memory subsystem is
built-in using the highly available z Systems redundant array
of independent memory technology. At the hypervisor level,
there's support for live guest
migration to help automate and
speed recovery from planned and
unplanned outages.

Middleware Efficiency

With the z13s, Linux workloads
can be consolidated on a
smaller footprint at a lower cost
compared with other x86-based
options. The latest IBM total cost
of ownership (TCO) study looks
at the cost to consolidate Linux

workloads on the z13s compared
with deploying them on-premises
on the leading x86 alternative or
using off-premises, x86-based
public cloud resources.
For this study, it's assumed
there are 12 Linux web workloads running 24-7. Each
workload is a two-tier web
application consisting of two
VMs, where one VM is running
the front web tier on WebSphere*
Application Server Network
Development, accessing data on
the second VM that's deployed
with the data tier on the DB2*
database. Each workload is driving, on average, 620 transactions
per second. All in all, 24 VMs,
running a total of 12 workloads,
are defined as general purpose
VMs, each with two virtual CPUs,
8 GB of virtual memory and 20
GB of virtual storage.
Extensive benchmarks were
conducted to determine what
configurations are needed to
consolidate a total of 12 Linux

web workloads (24 VMs) on z13s
servers, on-premises x86 systems
and off-premises public resources
while meeting the service levels
for the workloads in terms of
desired transaction throughput
and response times. In the
z13s case, IBM consolidated
the workloads on one LPAR
using KVM with eight IFLs,
384 GB of memory and storage
(IBM Storwize* V7000) of 1.6 TB
while meeting all service levels.
For the x86 case, workloads
were deployed running KVM
on two x86 systems with a total
of 48 cores, 384 GB of memory
and 1.6 TB of storage. For the
off-premises public cloud case,
the workloads could be deployed
on a total of 24 instances (VMs)
where each instance (VM) had
two virtual CPUs, 8 GB of virtual
memory and 20 GB of storage.
Based on the configurations
determined from benchmarks,
the costs were modeled over
three years for workloads

Table 1: Cost Model Assumptions
Cost Elements

IBM z13s

Infrastructure

One IBM z13s system:
* 8 IFLs
* 384 GB memory
* KVM hypervisor running in 1 LPAR
* Suse Linux Enterprise Server (SLES)
as OS for workloads running in
1 LPAR
* IBM Storwize V7000
* 1.6 TB SSDs

24 VMs (2 VMs per workload):
Middleware

* 12 VMs running WebSphere
Application Server Network
Deployment (ND)

* 12 VMs running DB2 Enterprise
Server Edition

Labor

Includes costs to manage
infrastructure and VMs

x86-based systems

public cloud

Two x86 systems:
* 48 cores (24 cores per system)
* 384 GB memory (192 GB per system)
* KVM hypervisor running on
each system
* SLES as OS for workloads running
on 2 systems
* 1.6 TB internal SSDs (800 GB
per system)

24 virtual instances (in U.S. east):
* 48 virtural CPUs (2 virtural CPU
per instance)
* 192 GB memory (8 GB per instance)
* SLES as OS for instances
* 960 GB of persistent storage
(20 GB per instance)
* Total data transfer out of 2154 GB/day
* Enterprise support

24 VMs (2 VMs per workload):

24 virtual instances (2 virtual
instances per workload):

* 12 VMs running WebSphere
Application Server ND

* 12 VMs running DB2 Enterprise
Server Edition

Includes costs to manage
infrastructure and VMs

* 12 instances running WebSphere
Application Server ND
* 12 instances running DB2 Enterprise
Server Edition

Includes costs to manage
virtual instances

Linux on z Systems NOVEMBER 2016 // 7

Linux_on_z_1116.indd 7

9/29/16 1:13 PM



Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - November/December 2016

Editor's Desk: Mastering their craft
IBM Perspective: Expanding mainframe ecosystem creates opportunities for Gen Z
Partner PoV: Workplace Diversity: Attract the best talent by encouraging more options for women
IT Today: Financial Feasibility: IBM Global Financing designs customized solutions for technology investments
Currents: Giving Data Structure: Find the right database management systems to maximize information
Case Study: Investing in a Difference: Primerica Life Insurance Co. improves processing and performance
Cover Story: Sparking Student Interest: IBM Master the Mainframe World Championship exposes top students to analytics and data storage
Feature: The Modern Mainframer: The IBM z platform attracts recent grads to its orbit
Women in Tech: Taking a Seat at the IT Table: Women meet challenges, savor successes in the IT field
Tech Corner: Get in the Cloud: z/OS solutions can connect to the cloud through REST interfaces
Solutions: API Integration Platform 3.0, OpenLegacy; Ivory Service Architect V5.1, GT Software
Stop Run: Code Your Own Way: High school girls take charge of their futures
Reference Point - Global Events, Education, Resources for Mainframe
Linux on z Systems E-book
2016 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - November/December 2016 - Intro
IBM Systems Magazine, Mainframe - November/December 2016 - Cover1
IBM Systems Magazine, Mainframe - November/December 2016 - Cover2
IBM Systems Magazine, Mainframe - November/December 2016 - 1
IBM Systems Magazine, Mainframe - November/December 2016 - 2
IBM Systems Magazine, Mainframe - November/December 2016 - 3
IBM Systems Magazine, Mainframe - November/December 2016 - 4
IBM Systems Magazine, Mainframe - November/December 2016 - 5
IBM Systems Magazine, Mainframe - November/December 2016 - Editor's Desk: Mastering their craft
IBM Systems Magazine, Mainframe - November/December 2016 - 7
IBM Systems Magazine, Mainframe - November/December 2016 - IBM Perspective: Expanding mainframe ecosystem creates opportunities for Gen Z
IBM Systems Magazine, Mainframe - November/December 2016 - Partner PoV: Workplace Diversity: Attract the best talent by encouraging more options for women
IBM Systems Magazine, Mainframe - November/December 2016 - 10
IBM Systems Magazine, Mainframe - November/December 2016 - IT Today: Financial Feasibility: IBM Global Financing designs customized solutions for technology investments
IBM Systems Magazine, Mainframe - November/December 2016 - 12
IBM Systems Magazine, Mainframe - November/December 2016 - 13
IBM Systems Magazine, Mainframe - November/December 2016 - Currents: Giving Data Structure: Find the right database management systems to maximize information
IBM Systems Magazine, Mainframe - November/December 2016 - 15
IBM Systems Magazine, Mainframe - November/December 2016 - 16
IBM Systems Magazine, Mainframe - November/December 2016 - 17
IBM Systems Magazine, Mainframe - November/December 2016 - Case Study: Investing in a Difference: Primerica Life Insurance Co. improves processing and performance
IBM Systems Magazine, Mainframe - November/December 2016 - 19
IBM Systems Magazine, Mainframe - November/December 2016 - 20
IBM Systems Magazine, Mainframe - November/December 2016 - 21
IBM Systems Magazine, Mainframe - November/December 2016 - 22
IBM Systems Magazine, Mainframe - November/December 2016 - 23
IBM Systems Magazine, Mainframe - November/December 2016 - Cover Story: Sparking Student Interest: IBM Master the Mainframe World Championship exposes top students to analytics and data storage
IBM Systems Magazine, Mainframe - November/December 2016 - 25
IBM Systems Magazine, Mainframe - November/December 2016 - 26
IBM Systems Magazine, Mainframe - November/December 2016 - 27
IBM Systems Magazine, Mainframe - November/December 2016 - Feature: The Modern Mainframer: The IBM z platform attracts recent grads to its orbit
IBM Systems Magazine, Mainframe - November/December 2016 - 29
IBM Systems Magazine, Mainframe - November/December 2016 - 30
IBM Systems Magazine, Mainframe - November/December 2016 - 31
IBM Systems Magazine, Mainframe - November/December 2016 - 32
IBM Systems Magazine, Mainframe - November/December 2016 - Women in Tech: Taking a Seat at the IT Table: Women meet challenges, savor successes in the IT field
IBM Systems Magazine, Mainframe - November/December 2016 - 34
IBM Systems Magazine, Mainframe - November/December 2016 - 35
IBM Systems Magazine, Mainframe - November/December 2016 - 36
IBM Systems Magazine, Mainframe - November/December 2016 - 37
IBM Systems Magazine, Mainframe - November/December 2016 - 38
IBM Systems Magazine, Mainframe - November/December 2016 - 39
IBM Systems Magazine, Mainframe - November/December 2016 - 40
IBM Systems Magazine, Mainframe - November/December 2016 - 41
IBM Systems Magazine, Mainframe - November/December 2016 - 42
IBM Systems Magazine, Mainframe - November/December 2016 - 43
IBM Systems Magazine, Mainframe - November/December 2016 - Tech Corner: Get in the Cloud: z/OS solutions can connect to the cloud through REST interfaces
IBM Systems Magazine, Mainframe - November/December 2016 - 45
IBM Systems Magazine, Mainframe - November/December 2016 - 46
IBM Systems Magazine, Mainframe - November/December 2016 - Solutions: API Integration Platform 3.0, OpenLegacy; Ivory Service Architect V5.1, GT Software
IBM Systems Magazine, Mainframe - November/December 2016 - Stop Run: Code Your Own Way: High school girls take charge of their futures
IBM Systems Magazine, Mainframe - November/December 2016 - Cover3
IBM Systems Magazine, Mainframe - November/December 2016 - Cover4
IBM Systems Magazine, Mainframe - November/December 2016 - Reference Point - Global Events, Education, Resources for Mainframe
IBM Systems Magazine, Mainframe - November/December 2016 - RF2
IBM Systems Magazine, Mainframe - November/December 2016 - Linux on z Systems E-book
IBM Systems Magazine, Mainframe - November/December 2016 - L2
IBM Systems Magazine, Mainframe - November/December 2016 - L3
IBM Systems Magazine, Mainframe - November/December 2016 - L4
IBM Systems Magazine, Mainframe - November/December 2016 - L5
IBM Systems Magazine, Mainframe - November/December 2016 - L6
IBM Systems Magazine, Mainframe - November/December 2016 - L7
IBM Systems Magazine, Mainframe - November/December 2016 - L8
IBM Systems Magazine, Mainframe - November/December 2016 - L9
IBM Systems Magazine, Mainframe - November/December 2016 - L10
IBM Systems Magazine, Mainframe - November/December 2016 - L11
IBM Systems Magazine, Mainframe - November/December 2016 - L12
IBM Systems Magazine, Mainframe - November/December 2016 - L13
IBM Systems Magazine, Mainframe - November/December 2016 - L14
IBM Systems Magazine, Mainframe - November/December 2016 - L15
IBM Systems Magazine, Mainframe - November/December 2016 - L16
IBM Systems Magazine, Mainframe - November/December 2016 - L17
IBM Systems Magazine, Mainframe - November/December 2016 - L18
IBM Systems Magazine, Mainframe - November/December 2016 - L19
IBM Systems Magazine, Mainframe - November/December 2016 - L20
IBM Systems Magazine, Mainframe - November/December 2016 - L21
IBM Systems Magazine, Mainframe - November/December 2016 - L22
IBM Systems Magazine, Mainframe - November/December 2016 - L23
IBM Systems Magazine, Mainframe - November/December 2016 - 2016 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - November/December 2016 - SE2
IBM Systems Magazine, Mainframe - November/December 2016 - SE3
IBM Systems Magazine, Mainframe - November/December 2016 - SE4
IBM Systems Magazine, Mainframe - November/December 2016 - SE5
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