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.
What role can you take?1
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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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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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4411
Central office
Server interconnection317x
Clustercontroller
Host processor
z/OSCICSVTAM
PCpSeries
AIX
iSeries
OS/400
zSerieszSeries
z/VM
WindowsWindows
Communicationcontroller (37xx)
Workstations
NCP
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