©HCCS & IBM® 2008 Stephen Linkin 1
Mainframe Hardware Systems And High AvailabilityStephen S. LinkinHouston Community College
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Introduction To Mainframe Hardware Systems
Terminology Or JARGONFig 2-1
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Early System Design
What Is In The Box Processors Memory Control Circuits Interfaces
S/360 system
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Early System Design
Channel Addresses Hex Parallel Channels
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Current Design
I/O Connectivity System Control And Partitioning Characteristics Of LPARS Consolidation Of Mainframes
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Current Design
Characteristics Of LPARS Equivalent To
Separate Mainframes No Need To Run z/OS,
In Each LPAR z/OS In LPAR1 Test Version Of z/OS In LPAR2 Linux For S/390 In LPAR3
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Current Design
Consolidation Of Mainframes Fewer Machines More Power Software Expense
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Processing Units
Central Processor (CP) System Assistance Processor (SAP) Integrated Facility For Linux (IFL) zAAP
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Processing Units
zIIP Integrated Coupling Facility (ICF) Spare Capacity on Demand
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Multiprocessors
Possible To Purchase With A Single CP Minimum Configuration Is Two
Processors Owned By System Or LPAR
Channels I/O Devices Interrupts Memory
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Disk Devices
IBM 3390 Disk Drives IBM 2105 Enterprise Storage Server®
Commodity SCSI Units RAID 5
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Clustering
CTC Rings Usage And Locking Queue Information Security Controls
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What Is An IBM Parallel Sysplex?
Coupling Facility Clustering Technologies For The
Mainframe Shared Data Clustering Non-disruptive Maintenance
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What Is An IBM Parallel Sysplex?
What Is A Coupling Facility? Hardware & Software
1. Locking Information
2. Cache Information
3. Data List Information
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What Is An IBM Parallel Sysplex?
Clustering Technologies For The Mainframe Shared Data Clustering Non-disruptive Maintenance
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Typical Mainframe Systems
Very Small Systems Medium Single Systems
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Typical Mainframe Systems
Very Small Systems Medium Single Systems Larger Systems
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Continuous Availability Of Mainframes
No Single Points Of Failure
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Continuous Availability Of Mainframes
No Single Points Of Failure Capacity And Scaling
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Continuous Availability Of Mainframes
No Single Points Of Failure Capacity And Scaling Dynamic Workload Balancing
Workload Distribution Generic Resource Management
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Continuous Availability Of Mainframes
No Single Points Of Failure Capacity And Scaling Dynamic Workload Balancing
Workload Distribution Generic Resource Management
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Continuous Availability Of Mainframes
Ease Of Use Workload Management (WLM)
Component
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Continuous Availability Of Mainframes
Ease Of Use Workload Management (WLM)
Component Sysplex Failure Manager (SFM)
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Continuous Availability Of Mainframes
Ease Of Use Workload Management (WLM)
Component Sysplex Failure Manager (SFM) Automatic Restart Manager (ARM) Cloning And Symbolics
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Continuous Availability Of Mainframes
Ease Of Use Workload Management (WLM)
Component Sysplex Failure Manager (SFM) Automatic Restart Manager (ARM) Cloning And Symbolics Z/series Resource Sharing
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Continuous Availability Of Mainframes
Single System Image Single Point Of Control Persistent Single System Image Across
Failures
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Continuous Availability Of Mainframes
Compatible Change And Non-disruptive Growth
Application Compatibility
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Continuous Availability Of Mainframes
Compatible Change And Non-disruptive Growth
Application Compatibility Disaster Recovery