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Parallel Sysplex

  
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Enhancements for z/OS Parallel Sysplex include:

z/OS R7

  • Server Time Protocol (STP) Support for extended distance Parallel Sysplexes
  • System Logger improvements for system management and availability
    • 16,384 DASDONLY log streams
    • Force log stream connection from the logger
    • Force deletion of log stream definition from LOGR CDS
    • Delete log stream with outstanding failed-persistent connections.
  • z/OS Load Balancing Advisor for improved network performance
  • Constraint relief for sysplex-scope XES locking, for GRS STAR, IRLM, and others
    • Support for approx. 24 Million locks / connector, up from 3 Million
  • XRC+ to improve throughput
  • z/OS Load Balancing Advisor for improved network performance
    • Support for approx. 24 Million locks / connector, up from 3 Million
    • Server Time Protocol (STP) Support for extended distance Parallel Sysplexes



z/OS R8

  • Master console removed as single point of failure
  • CFRM performance enhancements
  • System Logger improvements for availability and system management
  • Shared CKDS ICSF / Crypto for system management



z/OS R9

  • Message Flood Automation
  • CFRM performance enhancements
  • Reallocate Command improvements
  • Improved shared z/FS file performance
  • Improved Byte Range Lock Manager (BRLM) availability
  • CF Maintenance mode
  • SMF to System Logger
  • CF Duplexing Protocol Enhancements for CFLEVEL 15, with deferred availability on R9
  • Granular CF CPU Utilization Reporting by structure item for CFLEVEL 15
  • SMF LPAR health awareness
  • Couple dataset channel program serialization relaxation for improved parallel access
  • Health Checks
  • SFM enhancement to automate the termination/removal of stalled XCF members who are causing signalling sympathy sickness



z/OS R10 Preview

  • 99 consoles per LPAR, up from 99 consoles per Sysplex
  • CF lock request performance
  • Additional health checks



Hardware

  • CF15
    • RMF reporting
    • 255 internal tasks



 
Server Time Protocol

Time Synchronization for the Next Generation

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