IBM ZVSE ROADMAP Manual de usuario

z/VSE Roadmap

6 September 2007

z/VSE: A Roadmap For Cost savings and

Exploiting Technology

Prepared for:

IBM Corporation

By:

Sine Nomine Associates IBM-2007-04569-E-01

43596 Blacksmith Square August, 2007

Ashburn, VA 20147 SNA Proprietary –Confidential

z/VSE-4569

iii

Table of Contents

1INTRODUCTION AND PREFACE........................................................................1

1.1 Executive Summary.............................................................................................................................1

2THE Z/VSE PIE STRATEGY..................................................................................3

2.1 Pieces of the PIE....................................................................................................................................3

2.1.1 Protect.......................................................................................................................................................3

2.1.2 Integrate....................................................................................................................................................3

2.1.3 Extend.......................................................................................................................................................4

2.1.3.1 Exploiting Connectors .....................................................................................................................4

2.1.3.2 Web Serving......................................................................................................................................4

2.1.3.3 DB2 Connect.....................................................................................................................................4

2.1.3.4 CICS Transaction Gateway ............................................................................................................4

3TECHNOLOGY ENABLEMENT............................................................................5

3.1 System z9.................................................................................................................................................5

3.2 z/VSE 4.1 .................................................................................................................................................5

3.2.1 z/Architecture ..........................................................................................................................................5

3.2.2 Storage Constraint Relief......................................................................................................................6

3.2.3 New Pricing Metrics...............................................................................................................................6

3.2.4 Network Connectivity............................................................................................................................6

3.2.5 Security Enhancements..........................................................................................................................6

3.2.6 SCSI Disk Support..................................................................................................................................7

3.3 Overall Technology Impact................................................................................................................7

4PRICING AND ROI ..................................................................................................8

4.1 The Introduction of MWLC Pricing ...............................................................................................8

4.1.1 What counts as Full-Capacity?.............................................................................................................8

4.1.2 What counts as Sub-Capacity?.............................................................................................................9

4.1.3 Why MWLC? ..........................................................................................................................................9

4.1.4 Applicability............................................................................................................................................9

4.2 ISV Support............................................................................................................................................9

4.2.1 CSI International.....................................................................................................................................9

4.2.2 CA .............................................................................................................................................................9

z/VSE-4569

4.3 Reporting Sub-Capacity Utilization ..............................................................................................10

4.4 Does it work? .......................................................................................................................................10

4.5 z9 Hardware.........................................................................................................................................11

4.6 Human Resources...............................................................................................................................11

4.7 Environmental Savings.....................................................................................................................11

5SUMMARY AND RECOMMENDATIONS..........................................................13

APPENDIX A -PRICING SCHEMES....................................................................15

A.1 MWLC Levels......................................................................................................................................15

A.2 TWLC Tiers.........................................................................................................................................15

A.3 MWLC Eligible Program Products...............................................................................................15

APPENDIX B -Z/VSE UTILITIES AND IBM CONNECTORS..........................17

APPENDIX C -RAW DATA....................................................................................19

C.1 Maintenance Costs .............................................................................................................................19

C.2 Environmental Data...........................................................................................................................30

APPENDIX D -REFERENCES..............................................................................32

GLOSSARY....................................................................................................................33

z/VSE-4569

List of Tables

Table 1: Sample Comparative Pricing ............................................................................... 11

Table 2: MWLC Levels...................................................................................................... 15

Table 3: TWLC Tiers ........................................................................................................ 15

Table 4: Program Products eligible for MWLC................................................................. 16

Table 5: z/VSE Utilities and IBM Connectors .................................................................... 18

Table 6: Maintenance Data................................................................................................ 30

Table 7: Environmental Characteristics ............................................................................ 31

1Introduction and Preface

“With its announcement of z/VSE 4, IBM has executed a hat trick. It has brought new

technical life to an operating system that has not been part of the swift flow of

mainstream computing. It has brought the usage-based pricing model used by z/OS

mainframe shops to the VSE users who had previously been neglected. And it has set the

stage for fresh hardware initiatives by speeding the exit of users with older machines.”

Hesh Wiener, Big Iron

The intent of this document is to provide those responsible for making the long-term decisions on

the nature and direction of their company's IT strategy with the information and arguments to

continue with their investment with z/VSE.

This white paper illustrates the value of upgrading hardware and software portfolios to VSE

customers currently running pre-z/VSE 4.1 systems on pre System z9 processors. For those

running a standard portfolio of z/VSE products on Multiprise, 9672 or z8xx/z9xx classes of

machine, there are significant TCO savings to be realized.

1.1 Executive Summary

Tracings its heritage back to the days of S/360, z/VSE continues to meet its users business

requirements with a robust, lean, and efficient environment. Sine Nomine Associates’ own

experiences with z/VSE date back over twenty years to an organization that had been a VSE

customer since the DOS Rel 16 days. It was the backbone of an organization that turned over $4

billion per year and did so with great reliability.

Subsystems such as VTAM, CICS, POWER, and TCP/IP provide the infrastructure that satisfies

most of the VSE customer requirements. To VSE customers like these it is no wonder why the

question of “Why are you still running VSE?” is one that is usually answered with “Because it

works and works very well.”

Increasingly, however, there are business requirements and cost pressures that cause those

running VSE to look at how their investment can be maximized and the needs of their users

satisfied. With the introduction of the System z9 family and the availability of z/VSE 4.1 IBM

has attempted to help the VSE community address these concerns.

Today, for those customers facing end of life on their existing hardware there are compelling

technical and financial reasons to look at upgrading both the operating system and the hardware

on which it belongs. The combination of z/VSE and z9 address the questions of:

ØHow can value be most efficiently generated to maximize ROI?

ØHow can modernization of technology be applied to preserve the best of the existing

applications and enable developing services to rapidly adapt to new demand?

z/VSE 4.1 provides a strong foundation and enabling services to allow organizations to adapt

without risking the farm through:

ØTechnology enablement:

Ø64-bit VSE constraint relief

Øz/Architecture

Øz/VSE connector strategy which is part of the “Protect, Integrate and Extend”

(PIE) strategy described later in this document

ØCompanion Operating System to server consolidation strategy

ØOperational coordination benefits

ØSecurity features

ØPricing and ROI improvements:

ØMid-Range Workload License Charge (MWLC) Pricing

Øz9 hardware pricing

ØLower operational costs resulting from coordinated management

ØEnvironmentals

ØPersonnel optimization

VSE brings all those features into a focused coherent solution that provides strong ROI today, and

room to grow for tomorrow.

2The z/VSE PIE Strategy

The IBM VSE team have coined the acronym “PIE” to scribe a strategy of “Protect, Integrate,

and Extend” for z/VSE:

ØProtect existing customer investments in core z/VSE programs, data, equipment, business

and IT skills, plus business processes, and end user training. This is achieved by

modernizing applications by extending z/VSE resources to the web; exploiting the latest

in IBM servers and storage; and enhanced z/OS affinity.

ØIntegrate z/VSE with the rest of IT, based on open and industry standards via the use of

VSE connectors, SOA Web Services, and IBM middleware.

ØExtend solutions by using Linux on System z to exploit existing core VSE investments

and introducing new applications and workloads in a low cost, low risk, fast time-to-

market manner.

2.1 Pieces of the PIE

The following sections describe how the PIE strategy can be used to future-proof z/VSE-based

systems.

2.1.1 Protect

On facet of the protection part of the z/VSE PIE comes in the form of subsystems such as CICS

Transaction Server (TS), TCP/IP, and VTAM which facilitates the interoperation and affinity

with z/OS. Another facet is the enhanced hardware support that z/VSE provides which enables

the exploitation of devices such as the DS8000 or the encryption capabilities of the TS1120 tape

subsystem.

2.1.2 Integrate

Connectors enable the integration of VSE systems with other network-enabled systems and

provide real-time access to VSE resources (like VSAM, POWER, DL/I, Librarian, ICCF,

console) from remote platforms. VSE programs can also access remote data like databases or flat

files. In addition there are a set of utilities for download, that helps you to manage your VSE

system. Table 4 in the appendices describes these connectors and utilities.

Connectors are the building blocks used to connect different applications on heterogeneous

platforms and operating systems. z/VSE connectors are based on J2EE standards and use

WebSphere Common Connector Framework. They consist of:

ØClient components written in Java: meaning they can run on any Java-compatible

platform, such as Linux running on the IBM System z

ØServer components that run on the VSE host

2.1.3 Extend

The extend slice of the PIE can be implemented by a Linux system acting as both a gateway to

the Internet and as a host for new e-business applications. Running in an IFL the Linux system

will not affect the MSU rating of the System z and thus the software bill for the z/VSE portfolio.

It also allows its applications to be accessed from z/VSE at memory-to-memory speeds via the

use of hipersockets. Linux is able to exploit the z/VSE connectors to extend the reach of the

existing z/VSE applications and to promote the growth of new ones.

There are several ways people are using Linux on System z to extend their existing applications.

2.1.3.1 Exploiting Connectors

Java-based connector provide connectivity to z/VSE via TCP/IP. They provide access to, for

example a Web Application Server, VSAM, POWER, the Librarian, ICCF and the z/VSE

console.

The DB2-based connector uses DRDA over TCP/IP to provide JDBC/ODBC access to z/VSE-

based DB2 systems as well as VSAM and DL/I based data.

Tools such as the z/VSE navigator provide a face to z/VSE that is intuitive to today's workstation

users which means they can be immediately productive when using the system: there is no

requirement to train them how to use the older 3270 mechanisms.

2.1.3.2 Web Serving

One simple strategy is the serving of z/VSE data exported via NFS through an Apache webserver.

This can be done via a z/VSE-based webserver but using Apache allows access to a greater pool

of programmers are familiar with Apache's way of doing things.

A more complex strategy is to run WebSphere on the Linux system and using facilities like the

MQ client, DB2 Connect and the CICS Transaction Gateway to serve data and transactions to and

from the z/VSE system.

2.1.3.3 DB2 Connect

DB2 Connect enables a Linux system, and the clients that connect to it, to access z/VSE-based

DB2 instances.

2.1.3.4 CICS Transaction Gateway

The CICS Transaction Gateway enables Java applications running on another server or

workstation to access a CICS system running on z/VSE via the Java Daemon gateway. This

technology enables the serving of Java applets from a webserver.

Impact: The PIE strategy is a roadmap for maintaining and enhancing the viability of z/VSE

based systems into the future. The connectors and utilities are not “vaporware” and are available

now to facilitate the extension of z/VSE systems and applications. Access to strategic middleware

such as WebSphere and thus to a range of new applications is also a key to enhancing the value of

z/VSE.

3Technology Enablement

When it comes to z/VSE one side of the business driver coin is the advances in technology that

come with the new processors and z/VSE 4.1. The advances in technology translate into

improved application delivery, the integration of existing applications to the web, and secured

extension of data visibility to new applications.

3.1 System z9

The latest in the mainframe family of processors are the System z9 Business Class (z9 BC) and

Enterprise Class (z9 EC) series.

The z9 BC is designed as a midrange mainframe and promises extensive growth options and

excellent price/performance for those customers requiring a lower-capacity entry point and more

granular growth options than offered with the System z9 Enterprise Class. There are two models:

R07and S07, each capable of running from 1 to 7 processors. The full range of speciality engines

(IFL, CF, ZIIP and ZAAP) and an extensive range of cryptographic assists are available.

The z9 EC is designed as a large mainframe solution that is highly scalable and has greater

cryptographic capabilities and a higher capacity entry point than the z9 BC. It also supports the

full range of speciality engines. Five models are available: S08, S18, S28, S38 and S54, which

provides from 1-54 n-way processors.

Impact: The z9 provides arange of processors with improved performance with enough

granularity for users to choose an entry level appropriate to their needs and to grow when

required. The speciality engines enable collaborative processing with the introduction of Linux.

The cryptographic facilities enable rapid security services to be implemented which are needed

when extending z/VSE to the network.

3.2 z/VSE 4.1

Version 4.1 of z/VSE was announced on January 9, 2007 and made generally available on March

16. There are some significant features described in the announcement that may have both

technical and financial implications to a VSE-based IT operation.

3.2.1 z/Architecture

z/VSE works in z/Architecture mode only and thus requires a processor capable of operating in

this mode. It exploits z/Architecture's ability to address 64-bit real storage although it only uses

31-bit virtual addresses. Candidates for exploiting this feature include “data-in-memory”

techniques such as CICS Shared Data Tables, VSE Virtual Disk, or more and larger buffer pools.

z/VSE is supported on the IBM System z9 EC and z9 BC servers as well as the IBM eServer

zSeries z990, z890, z900 and z800 servers.

Impact: Selected system functions of z/VSE are able to exploit 64-bit real addressing which

means the below 2GB requirements for these functions is relieved and the space available for

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