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z/Linux or Linux on the Mainframe

Join Eric K. Dickinson as he explores the critical transition from mainframe systems to z/Linux. With extensive experience since 1979, Eric highlights the limitations and challenges of traditional mainframe technology, emphasizing high costs, scalability issues, and its outdated reputation. Learn how z/Linux serves as a powerful alternative for enterprise environments, discussing its applications, strengths, weaknesses, and the transformation essential for modern computing. This presentation provides insights for individuals and organizations considering the future of their IT infrastructure.

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z/Linux or Linux on the Mainframe

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  1. z/LinuxorLinux on the Mainframe Eric K. Dickinson Presenter

  2. Agenda • Biography • Disclaimer • The Mainframe Must Die! • zLinux

  3. What Qualifies Me to Present? • Been a nerd since 1979 • Fixed computers and radars in the army • AT&T Computer Systems System 5v4 1986 • Became Richard Stallman fan 1989 • Became Patrick Volkerding fan in 1993 • Installed first z/Linux 2007 • Became Government production 2009

  4. Presentation • Not sponsored by the Government • Not connected with the Government • Not endorsed by the Government • This is purely presented as a hobbyist.

  5. The Mainframe Must Die! • Perceptions of the Mainframe • Words Hurt • Expensive • Huge • Dinosaur • zSeries Servers • Enterprise • Scalable • Velociraptor

  6. zSeries Server Vocabulary • LPAR • FICON and FCP • DASD • Cryptography Accelerator • z/VM • 64bit Operation • IFL • Books

  7. LPAR • Hypervisor • Virtualized Systems • Physically Unconnected • Hipersockets • 60 LPARS • Memory Isolation • Variable Workload

  8. FICON and FCP • Both • 4-8G • 1600 MBps • Fiber Connectivity • Multiple Concurrent • Additional CRC • Same Cables as FCP • Fiber Channel Protocol • Switched Fabric • SCSI

  9. DASD • zLinux uses • Direct Access Storage Device • CKD Count Key Data • FBA Fixed Block Architecture • FCP • SAN • NAS • SCSI

  10. Cryptography Accelerator • Off-loads Cryptography Processing • 128 bit AES • DES • SHA • Independent Random Number Generator

  11. z/VM • Hypervisor • Monitoring • Tunable • Isolated Memory • Hipersockets

  12. 64bit Operation • 31 bits? • 64 bits?

  13. IFL • Integrated Facility for Linux • Tuned to Only Linux Processor Instructions • 256 Theoretical guests.

  14. Books • Processors and Memory are in “Books” • Hot Swappable • Add Processors Hot • Add Memory Hot

  15. z/Linux • Is It Really Linux? • Distributions • Configurations • Strengths • Weaknesses • Well Suited For • Who uses it? • How Do I do it?

  16. Is It Really Linux • Not Emulated • Complete Native Operating System • Formally Released 2000 • LinasVepstas • Big-Foot, Think Blue • Open Source • Gartner Reports the Future of Government and Big Business • Makes IBM OSS friendly

  17. Distributions • Red Hat RHEL6 • Novell SuSE SLES 11 • Debian • Gentoo • Slackware • CentOS • Fedora • Etc

  18. Configurations • Just Like Real Linux • Multiple Network Interfaces • Logical Volume Management (Grow on the Fly!) • RPM, APT-GET, YUM, YAST and Source • LAMP • Oracle, DB2, MySQL • PHP, Perl, JBoss, Java, Ruby (This list goes on)

  19. Strengths • Costs (Most Important) • Enterprise Class • High Availability • Standard Development • High I/O • Industry Direction • Security • Support • Ubiquity

  20. Weaknesses • Processor Intensive • Package Availability • z/VM Knowledge

  21. Well Suited • LAMP Applications • CMS (Content Management System) • Wiki (Mediawiki, Twiki, Swiki…..) • Blogs (WordPress…..) • CMS (Drupal, Openpublic, Joomla, OpenPublish….) • Databases • MySQL, Oracle, DB2, Postgress …… • Email • Sendmail, Postfix…. • Security • Scanning (Nessus, Satan, Sara… • Firewall – IPTables • So Many Others

  22. Who Uses z/Linux? • CMS Center for Medicade/Medicare Services • NIH National Institutes of Health • SSA Social Security Administration • State Farm • Many others

  23. How Do I Do it? There is plenty of help on the internet. Detailed instructions may be found • http://www.turbohercules.com/projects/zlinux/ • http://linuxvm.org/info/howtos/hercules.html Support may be found at • http://www.turbohercules.com/services/ • http://www.hercules-390.org/

  24. Greening the Data Center • No Additional Power • No Additional Cooling • No Additional Floor Space • Use Resources More Efficiently

  25. Questions?

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