MainframeCareer Guide

What is mainframe?- Mainframe is a high-performance computer used for large-scale computing

- Companies use Mainframe to host commercial databases, transaction servers and applications

- Mainframes are complex and very, very powerful

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Check out this short video:https://ibm.biz/mainframe-video-introduction

Did you know?- 80 % of all business data in the world are stored on mainframe

- Mainframe 99.999% availability represent 5 min outage per year

- Mainframe run 68% of the world’s production workload capacity but at only 6.2% of total server spend

- roughly 30 billion transactionsper day are processed by mainframe

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Who uses mainframe?

- 92 of 100 biggest banks

- 23 of 25 biggest airlines

- 10 of 10 biggest insurance companies

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How can you get a job?What we expect:- show your interest in IT & mainframe area- be highly motivated, detail oriented and able to work under pressure

Advantage:- experience in Linux / UNIX OS- good general IT knowledge- basic programming skills

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Future of mainframes1

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Further grow of existing essential business (finance, airline, retailer..) No other platform can offer resiliency and performance like mainframe

Security Most secured business platform. Only commercial system with highest EAL5+ security rating

Mobile economy Mobile transaction & mobile application integration to mainframe through API

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LinuxONE (Linux without limits) Unleash full potential of Linux for business (8000 virtual machines / millions of users / 30 billion of web interactions)

Data analytics & Cognitive business Why not run analytics exactly where your data resides? In a Real time! Integrates transaction and analytics in one system

CLOUD services Dynamically set resources and host private and public cloud for best price & security.

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Maintain operating system of most performant business machine as Mainframe System Administrator #InstallCurrentVersion #zOSv2.2 #APAR #PTF

Watch over critical transactions and databases as Mainframe DBDC system specialist #TransactionNotLooping #DBsUP #transaction #DB2 #IMS #IDMS

Solve complex batch processing as Mainframe Production Control Specialist #HaveNoFailedJob #jobrestart #application

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Supervise storage components as Mainframe Storage Specialist #HaveEnoughSpace #disk #VTS #tape #DFHSM #DASD #TS7700 #DFRMM

Set and maintain security tools & policies of most secure business machine as Mainframe Security Specialist #ProperAccess #ILoveAudits #privileges #access #policy

Adjust and plan performance as Mainframe performance and Capacity Specialist #HaveEnoughPerfomance #MIPS #SoftCapping #HardCapping

Maintain Monitoring tool as Mainframe System Automatin Administrator #ProperMonitoring #Netview #ATM #AOC #REXX #ALERTS

Ready to start your career with

Mainframe?Apply: ibm.biz/start-career-mainframe

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Take a deeper look Technical Guide

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Design & client stories

Mainframe Design Film (~15min):https://www.youtube.com/watch?v=ErZRSQoTFXw

Walmart (~3 min):https://www.youtube.com/watch?v=3C4PJ2bJbRk

Tesco (~3 min):https://www.youtube.com/watch?v=DKv9P37NIjI

RADIXX CEO story (~8 min):https://www.youtube.com/watch?v=ylBy6aNTqhQ

Evolution

1964 1970 1980 1990 2000 2004

S/360 S/370 S/370XA – 31 bits ESA/390 z/Architecture – 64 bits

MVT, PCPMFT MVS - VTAM

VM

MVS/XA MVS/ESA OS/390

z/OS

DB2z/VM

LinuxCICS

HW

SW

USS -

TCP/IP

WebSphere

CMOS –

Parallel Sysplex

Go through the presentation below, you will get a better picture how mainframes are evolving and how they used to look:

https://ibm.biz/mainframe-evolution

Take a look inside

Mainframe CPU

zSeries CPU- z13 chip is a 5.2 GHz 22nm hexa-octa core CISC (complex instruction set computer) based zArchitecture processor- z13 can have a maximum of 141 cores, 120 of which are customer configurable to run operating systems and applications as well

Mainframe LPARs- One mainframe CPC typically runs

several servers and operating systems for several customers

Batch processing

Disk Storagedatabases

Tape StorageSequential

data sets

Partners and clients exchange

information Reports

Data update

Reports

Statistics, summaries, exceptions

Residence Main office

Branch offices Account balances bills, etc

Processingreports

MainframeProcessing batch jobs

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55Reports

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CREDIT CARD

1234 5678 90121234 5678 9012VALID FROM GOOD THRU

XX/XX/XX XX/XX/XXPAUL FISCHERXX/XX/XX XX/XX/XXPAUL FISCHER

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SystemOperator

ProductionControl

Online processing

Disk storage

controllerStores

database files

queries and

updates

Account activities

Officeautomation

systems

MainframeAccessesdatabase

Requests

ATMs

Branchoffices

Business analysts Inventory control

Branch office automation systems

SNA or TCP/IPnetwork

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3322

4411

Central office

Server interconnection317x

Clustercontroller

Host processor

z/OSCICSVTAM

PCpSeries

AIX

iSeries

OS/400

zSerieszSeries

z/VM

WindowsWindows

Communicationcontroller (37xx)

Workstations

NCP