Linux on Mainframes

1
Linux on Mainframes

• A Case Study

2
What is Linux

• Open Source Operating system distributed under
  terms of GPL.
• Developed by Linus Torvalds and maintained by a
  worldwide community of developers.
• Available in different distributions with use
  ranging from desktop users to high end
  applications.

3
Why Linux ?

• Open source and hence offers high flexibility
• Supports different architectures like Intel,
  Alpha, Sparc.
• Ships with bundles of tools and utilities.
• No cost of ownership involved.
• Better Performance as compared to other operating
  Systems
• Supported by World Wide network of developers

4
IBM S/390 Offering

• Provides features like Heavy Multi-way
  processors, channelized I/O, High RAS
• Implements Symmetric Multiprocessing (SMP) for
  faster data processing
• Provides large memory, logical partitions, large
  volume DASDs
• Strong and rugged architecture ideal for high-end
  business needs
• Added support for TCP/IP to connect to Ethernet
  or token ring network, which was earlier missing
• Support for Parallel Sysplex environment and also
  supports IEEE Floating point

5
Why Linux on S/390 ?

• Reliability IBM S/390 is the most reliable
  hardware platform available
• Flexibility Linux is the most flexible and easy
  configurable operating system available
• Stability Combining the best software and best
  hardware provide the most stable system
• Security IBM mainframe is the most secure system
  in the world

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Why Linux on S/390 ?

• High Load Capacity Owing to its gigantic
  hardware and its excellent management in Linux,
  such a system has very high load capacities
• Virtualization Several instances of Linux can be
  run on this system eliminating the need to buy
  separate PC servers
• Faster Processing Linux can make best use of the
  rich features like SPM, channelized Input Output,
  thereby ensuring faster processing speeds

7
Change in Customers Perspective

• Customers need not replace mainframes to shift to
  the web technologies. Mainframes now provide
  TCP/IP access thereby leveraging on the earlier
  investment instead of buying new PCs
• Linux can exploit the mainframes strength and
  high capacity hardware to deliver better and
  reliable processing
• Enables consolidating the number of separately
  running PC servers to virtual servers on
  mainframe
• Linux on S/390 is supported by wide number of
  applications
• Centrally managed and deployable system

8
Change in Customers Perspective

• Results in saving of administrative costs,
  software costs, electricity costs and floor space
  by consolidation
• Economical deployment of basic Internet Services
• Provides robust, secured and centralized System
• Large number of talent pool available to support
  the fusion of these two technologies
• Customer can adapt to the new age technologies
  using a reliable, robust, secure system which is
  also scalable for future needs at a low Total
  Cost of Ownership

9
Supporting Partners

• IBM has formed the Linux Community Development
  System (LCDS) and is providing the developers
  with Linux account on their OS/390 systems to
  encourage the development and support
• IBM is offering free support in the form of
  redbooks and download of Linux to run on S/390
  systems
• Suse, Redhat, Turbo Linux, Debian are some of the
  Linux Distributors providing Linux support on
  S/390
• Major ISV (Independent Software vendors) are
  providing support for applications for Linux on
  S/390 e.g. SAP, sendmail
• A large community of developers worldwide
  comprising discussion forums and technical
  websites is providing support to Linux on S/390

10
Supporting Partners (contd..)

• Mainframe Linux solutions mature with mySAP.com
  for IBM eServer zSeries
• E-Mail Inventor Ports Software to IBM Linux
  Mainframes
• Websphere, E-commerce suite supports Linux on
  Mainframes
• SuSE Ships Linux for IBM Mainframe

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Changing Trends Success Stories

• Banco Mercantil Moves to Linux on IBM Mainframe
• Deutsche Telekom AG chooses Linux on an IBM
  zSeries mainframe for high availability
• Böllhoff selects Linux and mainframes for its IT
  strategy
• Winnebago Industries Hits the 'Open' Road with
  Linux on the IBM Mainframe
• Boscov deploys E-business solutions using Linux
  on IBM Mainframe
• Korean Airlines flies with linux on IBM Mainframe
• Tamkang University excels at data storage with
  IBM and Linux solution.
• IBM Linux mainframe chosen by European telecom
• Taiwan Securities Firm Selects Acucorp for Linux
  in IBM S/390 Server Migration

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Changing Trends Success Stories

• University of Florida Linux Mainframe to Form
  Core of "Virtual Grid" Research Lab
• Many more case studies of companies shifting to
  Linux on IBM Mainframe

13
Triggers to the IT service providers

• The demand for Web services based solutions is
  fast increasing
• Linux on mainframes provides these web based
  solutions to the clients on their existing
  mainframes
• This model also proves out to be cost efficient
  to the customers
• IT service providers serve a number of clients
  using IBM mainframes.
• These companies can leverage more business from
  these mainframe customers by building expertise
  in Linux on Mainframes

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Links to Linux for S/390 web sites

• http//oss.software.ibm.com/developerworks/opensou
  rce/linux390
• http//itsopok.itso.ibm.com/internsh.nsf/IntNumber
  /LS-J003
• http//vm.marist.edu/linuxvm/
• http//penguinvm.princeton.edu/
• http//linux.s390.org/
• http//linux390.marist.edu/
• http//www.marist.edu/htbin/wlvlists/
• http//www.linuxplanet.com/linuxplanet/reports
  /1532/1/
• http//www.vm.ibm.com/linux/

15
Thank You