Copyright IBM Corporation 2004 IBM eServer ™ Linux on zSeries Module 1: Introduction.

Copyright IBM Corporation 2004

IBM eServer™

Linux on zSeriesModule 1: Introduction

IBM eServer™

© 2004 IBM Corporation2

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Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both.

Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both.

UNIX is a registered trademark of The Open Group in the United States and other countries.

Linux is a trademark of Linus Torvalds in the United States, other countries, or both

IBM, zSeries, z/VM, z/OS, Parallel Sysplex, DB2, Lotus, Tivoli, MQSeries, and zArchitecture are trademarks of International Business Machines Corporation in the United States, other countries, or both.

© 2004 IBM Corporation

IBM ^

Why Linux on zSeries®

Objectives: Be able to distinguish between Linux on IBM zSeries and USSDescribe a scenario under which you would use Linux on zSeriesWhere is Linux on zSeries today?

List 5 ways it is being used todayList 5 misconceptions about it

What is zSeries and why is it being used today?List 9 major advantages of Linux on zSeriesHow is the z800 family different from z900 as far as capacity and features are concerned?List 9 reasons to run Linux on zSeries as a guest under z/VM®


IBM ^

Objective: Objective: Distinguish between Linux on zSeries and USS Distinguish between Linux on zSeries and USS

UNIX System Services (USS) is crucial to the e-business run time environment on z/OS®

It is a key element in supporting middleware and applications, and is an integral part of some strategic solutions such as WebSphere®

It provides a sound and robust UNIX environment, bringing with it the qualities of service (availability, security, workload balancing) expected and delivered with z/OS

USS will continue to be enhanced to support the e-business infrastructure, as well as vendor and customer applications running on z/OS

Option 1:


IBM ^

Objective: Objective: Distinguish between Linux on zSeries and USS Distinguish between Linux on zSeries and USS

Linux on zSeries is a new environment with rapidly Linux on zSeries is a new environment with rapidly growing acceptance in the marketplacegrowing acceptance in the marketplace

It brings a large number of applications and faster porting It brings a large number of applications and faster porting of existing UNIX applications that do not need to exploit of existing UNIX applications that do not need to exploit z/OS features or qualities of servicez/OS features or qualities of service

It enables the consolidation of a large number of Linux It enables the consolidation of a large number of Linux servers onto a single hardware platformservers onto a single hardware platform

Option 2: Linux on zSeries


IBM ^

When to use USS

When you need the full range of z/OS Qualities of Service

To take full advantage of the platform's strengths in availability, handling mixed workloads, security, transaction processing and performance

To optimize database access performance when running an application in the same address space as DB2®

For access to the full set of advanced capabilities of WorkLoad Manager (WLM)

To combine existing OS/390 applications with newer components like files and datasets that run in a UNIX environment

To provide the highest degree of availability

To utilize Parallel Sysplex capabilities

To utilize Recoverable Resource Management Services (RRMS) functionality

When you need advanced security features such as those provided by Remote Access Control Facility (RACF®)

Objective: Objective: Distinguish between Linux on zSeries and USSDistinguish between Linux on zSeries and USS


IBM ^

When to choose Linux on zSeries

Porting a C/C++ application to Linux on zSeries is easier and faster than a port to USS

Using the System Administration Facility, Linux on zSeries provides an environment that supports hundreds of images

Consider porting applications that need 64-bit addressing to Linux on zSeriesApplications that need full ASCII capabilities or that need ASCII double byte character sets are supported in Linux on zSeries

When speed to market is crucial, utilizing LPARs to simultaneously develop, produce and test on the same machine can give a crucial edge

Linux on zSeries provides a rich development environment for application programmers

Objective: Describe a scenario under which you would use Objective: Describe a scenario under which you would use Linux on zSeriesLinux on zSeries


IBM ^

Linux momentum

Linux (a combination of all major Linux (a combination of all major distributions) will become the dominant distributions) will become the dominant server operating system in the United States server operating system in the United States by 2005.by 2005.--Stacey Quandt, Giga,--Stacey Quandt, Giga,Business 2.0, June 17, 2002Business 2.0, June 17, 2002

By 2006, Linux on zSeries will be a keyBy 2006, Linux on zSeries will be a keyfoundation for a strategic crossfoundation for a strategic crossdevelopment platformdevelopment platformenvironment, accelerating UNIXenvironment, accelerating UNIXserver consolidation, whileserver consolidation, whilecreating a powerful alternativecreating a powerful alternativeto Windows .NET.to Windows .NET.--Gartner, May 2002--Gartner, May 2002

Objective: Describe a scenario under which you would use Objective: Describe a scenario under which you would use Linux on zSeriesLinux on zSeries


IBM ^

Top uses for Linux todayObjective: List 5 ways Linux on zSeries is being used todayObjective: List 5 ways Linux on zSeries is being used today


IBM ^

Infrastructure solutions:Optimized e-servers and software for Linux

Infrastructure Servers:Infrastructure Servers: File/PrintFile/Print Web/ApplicationWeb/Application Application developmentApplication development Content/CachingContent/Caching SecuritySecurity

Advantages:Advantages: Low costLow cost Highly reliableHighly reliable Rapid setupRapid setup Innovative packagingInnovative packaging

Infrastructure Software:Infrastructure Software: DB2 Universal DatabaseDB2 Universal Database LotusLotus® Domino collaboration Domino collaboration TivoliTivoli® Systems Management Systems Management MQSeriesMQSeries® messaging messaging WebSphereWebSphere

Advantages:Advantages: ScalableScalable Open standardsOpen standards Industry proven Industry proven

Objective: List 5 ways Linux on zSeries is being used todayObjective: List 5 ways Linux on zSeries is being used today1. Infrastructure Solutions1. Infrastructure Solutions


IBM ^

• Workload Consolidation:Workload Consolidation:−Replace many with fewReplace many with few−Optimize assetsOptimize assets

• Advantages:Advantages:−Reduce costsReduce costs−Get proven eServer reliabilityGet proven eServer reliability−Use virtualization serversUse virtualization servers−Dynamically manage workloadsDynamically manage workloads

Consolidate workloads across the organization:Simplified infrastructure with IBM and Linux

Objective: List 5 ways Linux on zSeries is being used todayObjective: List 5 ways Linux on zSeries is being used today2. Workload Consolidation2. Workload Consolidation


IBM ^

• Benefits of using clusters with Linux: Benefits of using clusters with Linux: • High performance computingHigh performance computing• 24 x 7 availability with failover protection24 x 7 availability with failover protection• Horizontal and vertical scalability without downtime Horizontal and vertical scalability without downtime • Large capacity data and transaction volumes including support for Large capacity data and transaction volumes including support for mixed workloads mixed workloads• Handling of unexpected peaks in workload Handling of unexpected peaks in workload • Disaster recovery Disaster recovery

• Advantages:Advantages:• Supercomputing performance at "mass market" pricesSupercomputing performance at "mass market" prices• Industry leading IBM cluster softwareIndustry leading IBM cluster software

• GPFS - General Parallel File System GPFS - General Parallel File System • CSM - Cluster Systems Manager CSM - Cluster Systems Manager • Globus toolkitGlobus toolkit

• IBM factory installed and deliveredIBM factory installed and delivered

Linux on zSeries clusters: Solutions for complex workloads

Objective: List 5 ways Linux on zSeries is being used todayObjective: List 5 ways Linux on zSeries is being used today3. Linux Clusters3. Linux Clusters


IBM ^

Distributed applications serve many locations:Replicate function across the enterprise

• Distributed solutions with Linux on zSeries:Distributed solutions with Linux on zSeries: Geographically dispersedGeographically dispersed Serve more customers and/or employeesServe more customers and/or employees

• Advantages:Advantages: Low cost, small footprint e-serverLow cost, small footprint e-server High reliability and stabilityHigh reliability and stability SecureSecure Easily replicatedEasily replicated Centrally managedCentrally managed IBM world-wide support and implementationIBM world-wide support and implementation

Objective: List 5 ways Linux on zSeries is being used todayObjective: List 5 ways Linux on zSeries is being used today4. Distributed Solutions4. Distributed Solutions


IBM ^

Application solutions:

• IBM Business Partner and Independent Software Vendor (ISV) IBM Business Partner and Independent Software Vendor (ISV) solutions:solutions:

Enable e-business initiativesEnable e-business initiatives Deliver industry vertical applicationsDeliver industry vertical applications Leverage Business Partner and ISV expertiseLeverage Business Partner and ISV expertise

• Advantages:Advantages: Bundled e-servers Bundled e-servers ISV applicationsISV applications Low costLow cost Optimized solutionsOptimized solutions Reduced implementation timeReduced implementation time

Objective: List 5 ways Linux on zSeries is being used Objective: List 5 ways Linux on zSeries is being used todaytoday5. Application Solutions5. Application Solutions


IBM ^

Misconceptions about Linux on zSeries

Does not scale Is not ready for the enterprise Lacks business applications No security Skills are scarce

Objective: List 5 misconceptions about Linux on zSeriesObjective: List 5 misconceptions about Linux on zSeries


IBM ^

Database - world record TPC-H benchmarkDatabase - world record TPC-H benchmark DB2 v7.2; 4 Intel® 900MHz Pentium III Xeon processorsDB2 v7.2; 4 Intel® 900MHz Pentium III Xeon processors 74% faster than the best Windows-based result74% faster than the best Windows-based result

File ServingFile Serving PC Mag's performance tests for file servers “...Linux on zSeries with Samba PC Mag's performance tests for file servers “...Linux on zSeries with Samba

significantly outperformed Windows 2000”, 11/01significantly outperformed Windows 2000”, 11/01 “ “...on the fastest HW while handling largest number of clients, z/Linux's ...on the fastest HW while handling largest number of clients, z/Linux's

throughput was 78% faster”throughput was 78% faster” zSeries Servers – Linux on zSeries vs. SolariszSeries Servers – Linux on zSeries vs. Solaris

12 Linux on zSeries partitions equaled 9 x 4 CPU Sun 420R servers12 Linux on zSeries partitions equaled 9 x 4 CPU Sun 420R servers Linear scalability for multiple Linux on zSeries instances and multiple usersLinear scalability for multiple Linux on zSeries instances and multiple users

Linux on zSeries is scalableObjective: List 5 misconceptions about Linux on zSeriesObjective: List 5 misconceptions about Linux on zSeries1. Scalability1. Scalability


IBM ^

2. Linux on zSeries is already used for enterprise

Cluster Environment Peak Operation Downtime Per Year: Cluster Environment Peak Operation Downtime Per Year: (Standish Research Group 2001)(Standish Research Group 2001)

• Microsoft...........30 hoursMicrosoft...........30 hours• Linux on zSeries.................14 hoursLinux on zSeries.................14 hours

Google runs Linux on zSeries:Google runs Linux on zSeries: 100+ million queries per day100+ million queries per day Average response times less than half a secondAverage response times less than half a second

• IBM service/support:IBM service/support:• Level 1-2-3 supportLevel 1-2-3 support



IBM ^

ISVs are adopting Linux

3,800 Linux on zSeries applications in IBM Global Solutions Directory SAP, Sendmail, jBASE, Relavis, Sanchez, MissionCritical

Linux on zSeries, QAD, SAS, Steeleye, SecureWorks, Fluent Eclipse: open-source, integrated foundation for application development Supported by 150+ ISVs with over 267 applications 48% of developers worldwide (40% in North America) plan to port most of their apps to Linux on zSeries* (WHERE IS THE *?) 39% of Int'l (34% of North American) developers have written Linux on zSeries applications 50%+ have confidence in Linux on zSeries for mission-critical apps Worldwide IBM Porting Centers for Linux on zSeries

Objective: List 5 misconceptions about Linux on zSeriesObjective: List 5 misconceptions about Linux on zSeries3. Business Applications3. Business Applications

(Linux on zSeries does have business applications)


IBM ^

Linux is ubiquitous

Manufacturing Industry Wholesale/Distribution Retail Public Financial/Insurace Education Service Technology ISPs/ASPs Transportation

Objective: List 5 misconceptions about Linux on Objective: List 5 misconceptions about Linux on zSerieszSeries3. Business Applications3. Business Applications

(Linux on zSeries does have business applications)


IBM ^

4. Security in Linux on zSeries

Linux on zSeries with a central z/OS (RACF) LDAP Server: Allows you to keep Linux on zSeries user information and passwords Allows you to make use of existing RACF user definitions for Linux on zSeries users Benefits from the availability/scalability of z/OS systems for central data storage Has Lightweight Directory Access Protocol (LDAP): an open standard protocol for accessing information services



IBM ^

5. Linux on zSeries skills are not scarce

IBM Linux on zSeries Scholars ChallengeIBM Linux on zSeries Scholars Challenge 1,462 students entered1,462 students entered 664 colleges represented664 colleges represented

IBM Learning ServicesIBM Learning Services 40 courses40 courses www.ibm.com/training/spotlight/linuxwww.ibm.com/training/spotlight/linux

Porting Solaris applications to LinuxPorting Solaris applications to Linux 80+% of APIs are identical80+% of APIs are identical Less than 15% require simple translations or masksLess than 15% require simple translations or masks Less than 5% of the APIs may require application reworkLess than 5% of the APIs may require application rework

"If your IT organization supports UNIX today, you are well positioned to support "If your IT organization supports UNIX today, you are well positioned to support Linux. UNIX skilled programmers can easily and quickly develop into LinuxLinux. UNIX skilled programmers can easily and quickly develop into Linux programmers.“programmers.“



IBM ^

What is zSeries? Four key features of z/Architecture include: A full 64-bit architecture that provides for 24, 31 and 64-bit coexistence Intelligent Resource Director (IRD): provides for an exclusive way to intelligently direct the processor and I/O resources to priority

workloads running within an LPAR cluster HiperSockets: an internal facility for z/Architecture that permits a TCP/IP network to be established between LPARs

Objective: What is zSeries and why is it being used today?Objective: What is zSeries and why is it being used today?


IBM ^

Benefits of Linux on zSeries 1. Scalability (ten to thousands of images depending on workload)

2. z/Architectecture exploitation: IRD & WLM

3. Integrated business solutions: data richness of zSeries and applications

4. Flexibility and openness of Linux with the Quality of Service (QOS) of zSeries

5. zSeries customers are offered additional opportunities to leverage their investments through Linux

6. Consolidation benefits while maintaining one server per application

7. Reduced Total Cost of Ownership (TCO)

8. Improved service level: zSeries QOS

9. Speed to market time increased

Objective: List 9 major advantages of Linux on zSeriesObjective: List 9 major advantages of Linux on zSeries


IBM ^

Linux on zSeries: The best of both worldsGives you:

The most reliable hardware platform available Redundant processors and memory Error detection and correction Remote Support Facility (RSF) Centralized Linux systems that are easier to manage Scalability

Physical - scale to 16 application processors and up to 3 dedicated I/O processors Logical - scale to hundreds of Linux images

Non-disruptive capacity upgrade on demand Support for mixed workloads Complete workload isolation High speed inter-server connectivity Virtualization technology when run on z/VM



IBM ^


3-tier Logical, 2-tier Physical Linux on zSeries diagram


IBM ^

Linux on z800

Objective: How is the z800 family different from the z900?Objective: How is the z800 family different from the z900?


IBM ^

Linux on z900

Objective: How is the z800 family different from the z900?Objective: How is the z800 family different from the z900?


IBM ^

9 Reasons to run Linux as a guest under z/VM

1. Resource sharing among multiple Linux images running on the same VM system

2. Server hardware consolidation 3. Virtualization 4. Linux guests can transparently take advantage of VM support

for zSeries hardware architecture and RAS features5. High-performance communication among virtual machines

running Linux and other operating systems on the same processor

6. Minidisk device driver for Linux on zSeries can access all z/VM supported DASD types

7. Data-in-memory performance boosts are offered by VM exploitation of the z/Architecture

8. Control and automation9. Horizontal growth

Objective: List 9 reasons to run Linux on zSeries as a guest under z/VMObjective: List 9 reasons to run Linux on zSeries as a guest under z/VM


IBM ^

Linux as a guest under z/VM

Supports ten to thousands of images depending on

workload Supports Linux for S/390 and

Linux on zSeries guests Complements the zSeries

Integrated Facility for Linux (IFL) with attractive pricing terms and conditions

Exploits z/Architecture Offers 64-bit real storage

support: real storage constraint relief

Offers 64-bit virtual support: run 64-bit guest systems on zSeries

Objective: List 9 reasons to run Linux on zSeries as a guest under z/VMObjective: List 9 reasons to run Linux on zSeries as a guest under z/VM


IBM ^

Reason 1: Resource control

Allocate system resources on a per-Linux-image basis

Objective: List 9 reasons to run Linux on zSeries as a guest under Objective: List 9 reasons to run Linux on zSeries as a guest under z/VMz/VM


IBM ^

Reason 2: Consolidation



IBM ^

Reason 3: Handling Linux guests

Integrated Facility for Linux* (IFL):Integrated Facility for Linux* (IFL):• Additional engines/processors dedicated to Linux-only workloads Additional engines/processors dedicated to Linux-only workloads • Supports z/VM, Linux on S/390 and Linux on zSeries Supports z/VM, Linux on S/390 and Linux on zSeries • Available on 9672 G5/G6, Multiprise 3000 and zSeriesAvailable on 9672 G5/G6, Multiprise 3000 and zSeries• Lower price than standard enginesLower price than standard engines• Begin deployment or consolidation of Linux, UNIX and NT workloads to Begin deployment or consolidation of Linux, UNIX and NT workloads to zSeries immediatelyzSeries immediately• Traditional zSeries software charges unaffectedTraditional zSeries software charges unaffected• IBM zSeries S/390 software and middlewareIBM zSeries S/390 software and middleware• ISV productsISV products

*Only usable in LPAR mode and cannot be "mixed" with standard processors

Objective: : List 9 reasons to run Linux on zSeries as a guest under z/VM


IBM ^

Sample IFL configurationzSeries 900 model with 3 IFL processors and z/VM V4



IBM ^

•- Performance collection and reporting for every Linux image•- Log accounting records for charge back•- Direct console output from your Linux systems to a single console• using "Set Observer" or Single Console Image Facility (SCIF)•- Automate system actions based on console output•- System Automation with CMS, Rexx, Pipelines, PROP•- Userid and password control for each Linux image•- Record and report hardware errors using EREP•- Dynamic I/O reconfiguration: add more disks without interruption

Reason 4: Take advantage of VM support for zSeries



IBM ^

Reason 5: Virtual networking/communicationOne Linux guest connects to external networks

Also connects to multiple guest LANsProvides external routing and firewall services for guests

Other Linux guests connect to individual guest LANsVirtual HiperSocketsAn ideal way to connect a server farm to z/OS using real hipersockets


IBM eServer™


Reason 6: DASD access

Linux on zSeries includes a minidisk device driver that can access all DASD types supported by z/VM


Minidisks are partitions or sections of a full volume• one-to-one relationship between the minidisk and the Linux partition

- makes control access easier and “keeps things straight” - full volumes must be used if running Linux in an LPAR

DASD is basically your hard drive

Direct Access Storage • Directly attached disk or tape storage

• I/O requests access the devices directly • Easy to deploy


IBM ^

Reason 7: Data-in-memory

Use VM's data-in-memory techniques for improved performance

Virtual Disks in Storage (excellent swap device)

Minidisk cache (high-speed access to shared data)


IBM eServer™


Reason 8: Control and management

Systems Management: data backup using Shark and TSMSystems Management: data backup using Shark and TSM

Objective: List 9Objective: List 9 reasons to run Linux on zSeries as a guest under reasons to run Linux on zSeries as a guest under z/VMz/VM


IBM ^

Reason 9: Horizontal growth



IBM ^

Recap

What environments are offered for z/OS?

Unix System Services (USS) and Linux Where is Linux today?

The 5 ways it is being used today are: workload consolidation, clustering, application solutions, distributed enterprise and infrastructure solutions

The misconceptions about Linux are: does not scale, is not ready for enterprise, lacks business applications, has no security, skills are scarce


IBM ^

Recap Continued

What are the major advantages of Linux on zSeries?1. Scalability (ten to thousands of images depending on workload)

2. z/Architectecture exploitation: IRD & WLM

3. Integrated business solutions: data richness of z/Series and applications

4. Flexibility and openness of Linux with the zSeries QOS

5. zSeries customers are offered additional opportunities to leverage their investments through Linux

6. Consolidation benefits, while maintaining one server per application

7. Reduced Total Cost of Ownership

8. Improved service level: zSeries QOS

9. Speed to market time increased


IBM ^

Recap Continued

Increased performance, growth and scalability Server consolidation enables horizontal growth Three-tier architecture on two tiers of hardware Extensive support for sharing resources Virtual networking Complete isolation of Linux images if required

Increased productivity Development and testing Production support

Improved operations Backup and recovery Command and control

Why run Linux as a guest under z/VM?Why run Linux as a guest under z/VM?


IBM ^

Copyright IBM Corporation 2004 IBM eServer ™ Linux on zSeries Module 1: Introduction.

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Transcript of Copyright IBM Corporation 2004 IBM eServer ™ Linux on zSeries Module 1: Introduction.