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For the electro band comprising Murray Munro & John Molloy see Mainframe (band)

Mainframes (often colloquially referred to as big iron) are computers used mainly by government institutions and large companies for mission critical applications, typically bulk data processing such as census, industry/consumer statistics, ERP, and financial transaction processing.

The term originated during the early 1970s with the introduction of smaller, less complex computers such as the DEC PDP-8 and PDP-11 series, which became known as minicomputers or just minis. The industry/users then coined the term "mainframe" to describe larger, earlier types (previously known simply as "computers").

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IBM eserver zSeries Mainframe Servers - IBM home page for current mainframe computer systems, with links to an overview, software, operating systems, networking, I/O connectivity, solutions, news, events, FAQs, support, education and a library of documents.
Meta Description: [ Your portal to IBM mainframe information. Check out what's new in IBM mainframe technology, resources and solutions. Find links to System z9, z890, z990 and other product information, including operating systems, storage and IBM mainframe software. ]

360 Revolution - Video and pictures from the 40th anniversary celebrations of the IBM mainframe (System/360) on April 7, 2004, at the Computer History Museum in Silicon Valley, California.

64-bit Architecture - Article by Patrick Mullenon on IBM announcing 64 bit architecture.

Anura Guruge: Mr. SNA - Guruge's views on the IBM world, XML Web services, grids and autonomic computing.
Meta Description: [ Anura Guruge Web site Home Page that provides an overview of what he does, lists his books and interests ]

Architecture of the IBM System/360 - 1964 article coinciding with the announcement of the System/360 (S/360), the first family of computers to have the same machine architecture as IBM mainframes of today. Written by the S/360's architects: Gene Amdahl, Gerrit Blaauw and Fred Brooks.

BookManager: IBM Softcopy Reader - Free Java-based software for Linux and Windows workstations. Used to read IBM manuals in BookManager format, typically on CD-ROM. Replaces IBM Library Reader (ILR).
Meta Description: [ BookManager products deliver tools which help you build and manage your organization's documents into a collection of online books. ]

Bus-Tech - Manufactures and markets mainframe connectivity and data movement products, both under their own brand name and as an OEM.
Meta Description: [ Find out why Bus-Tech is a recognized leader in the world of mainframe connectivity providing network storage and data library solutions that meet the rugged demands of data processing professionals. ]

404 Canada's First z990: The First T-Rex in 65 Million Years - Workers' Compensation Board - Alberta is the first Canadian company to install an IBM eserver zSeries 990 mainframe computer, code-named T-Rex. z/Journal article is a PDF file requiring Adobe Acrobat Reader.
Meta Description: [ The BI Journal is the resource for e-business and application integration. It is published monthly as a magazine and as a Website, which is continually updated. The journal's mission is to provide news, expert insight and analysis into how to deploy inte... ]

Computer History: IBM 360/370/3090/390 - A personal history of the IBM mainframe by Lars Poulsen.

Computer Measurement Group - CMG is a user group focused on performance and resource management, especially for IBM mainframes, with an annual conference and exhibition in North America. Groups link lists local CMG groups worldwide.
Meta Description: [ Worldwide non-profit organization that focuses on computer performance evaluation and capacity management ]

Coupling Facility Structure Sizer: CFSIZER - A Web-based application used to calculate the size of each IBM software product's structure within a Parallel Sysplex Coupling Facility (CF).
Meta Description: [ IBM CFSizer web based tool for sizing coupling facility structures based on the inputs user provides. ]

Dictionary of the Mainframe World - 6000 words and phrases currently in use and from the past, technical and marketing terms, as heard in IBM mainframe computer environments.

Dinos Web Ring - Access to over 30 Web sites run by individuals interested in mainframes.

Disaster Recovery Journal - Although business continuity is the focus, many articles are mainframe-related. Also hosts an annual conference.
Meta Description: [ DRJ is the premiere leader in the Business Continuity Arena, delivering the most informative publication, the two largest conferences in the world, and the most active website dedicated to DR. ]

EMC: Mainframe Offerings - Storage platforms and software for IBM mainframes.
Meta Description: [ overview of EMC software offerings for peforming various operations on your information. ]

Enterprise IS News - Industry information relevant to organizations with IBM mainframes, covering new and updated hardware and software products, vendor news and industry research. A free news service published every Wednesday, also available by e-mail subscription.

Eric Loriaux - Large collection of categorized links covering IBM mainframe hardware and software topics, with special emphasis on the needs of systems programmers.
Meta Description: [ Home page built as a starting point for S/390 (OS/390, MVS, VSE, VM) system-programmers, application programmers and operators on the Internet. It's not just a directory of software and hardware products, but also a place where mainframe professionals can meet, introduce themselves, search for a... ]

eServer Magazine, Mainframe Edition - A bimonthly IBM publication with technical overview and how-to articles and tips, mostly on systems software, with some hardware coverage; plus IBM and non-IBM product news. Written by IBM and non-IBM authors.
Meta Description: [ description ]

Fujitsu Mainframe Servers - Manufacturer of IBM mainframe-compatible servers, services, software and storage. Fujitsu acquired Amdahl, originally founded by IBM System/360 architect Gene Amdahl.

Gallery of Old Iron: IBM S/360, S/370 - Pictures of Central Processing Unit (CPU), channel and control unit front panels from System/360 and /370 mainframes, plus a few System/3, 1401, 1800 and SAGE items from the author's collection.

Gilbert Saint-flour - Links to P/390 information and z/OS freeware, as well as Gilbert's own z/OS tools and documentation.

GUIDE SHARE Europe (GSE) UK Region - United Kingdom region of GUIDE SHARE Europe, a merger of SHARE and GUIDE operations in the UK.
Meta Description: [ The website of Guide Share Europe (GSE) in the UK. The user group for users of IBM hardware and software architectures across Europe. ]

GUIDE SHARE Europe: GSE - The merger of the European portion of the IBM user groups GUIDE and SHARE.
Meta Description: [ GUIDE SHARE EUROPE, The Association of IT Professonals. ]

Hitachi Data Systems - HDS provides hardware storage systems for multiple platforms, including the IBM mainframe. Related support, software and training is also available.
Meta Description: [ High performance and high capacity storage systems were designed to simplify complex storage solutions with efficient storage devices, which supply uninterrupted and ever increasing flow of data. ]

IBM Corporate Archives - Includes a Search facility. Catalog link then Products and Services includes information on and pictures of many historical pieces of mainframe hardware.
Meta Description: [ IBM Archives: Valuable resources on IBM's history ]

IBM Dictionary of Computing - An updated on-line version of the once popular book, now officially known as the Glossary of Computing Terms.
Meta Description: [ This site has been replaced by www.ibm.com/ibm/terminology. ]

IBM Hardware Internet Library - Free access to IBM manuals in both Web-based BookManager and Adobe Acrobat PDF format. Mostly IBM mainframe hardware and the software that supports it.
Meta Description: [ Hardware Internet library - June 2000 Hardware collection (SK2T-5843-25) ]

IBM Jaguar Tape - IBM TotalStorage Enterprise Tape Drive 3592 replaces 3590 MagStar with a non-compatible tape cartridge format, just as MagStar replaced 3480 a decade earlier. Originally code-named Jaguar.
Meta Description: [ IBM TotalStorage 3592 Tape Drive. High capacity, high performance, fast access enterprise class tape drive ]

IBM Offering Information - Access to all IBM announcement letters, sales manual, press releases, red books, white papers and catalogs, with comprehensive search for most.
Meta Description: [ Offering Information Access search page | Offering Information error page ]

IBM Redbooks - Special type of less formal IBM manuals. Useful for users seeking more real-world examples than given in standard manuals. Usually details implementation and experiences of a project to implement IBM software and hardware, but some are conference presentation material. More often now, a few are introductory textbooks on a specific technology: IBM hardware or software product.
Meta Description: [ IBM Redbooks are developed and published by IBM's International Technical Support Organization, the ITSO. We develop and deliver skills, technical know-how, and materials to technical professionals of IBM, Business Partners and clients. ]

IBM Resource Link - Convenient access to mainframe hardware and systems software planning and maintenance information. Registration is free, but is restricted to IBM customers, business partners and employees; confirmation takes about two business hours.
Meta Description: [ IBM Resource Link is a customized web-based solution, providing access to information for planning, installing, and maintaining IBM e(logo)server and IBM S/390 servers and associated software. ]

IBM Resources for Mainframe Developers - IBM programs and information for anyone developing a commercial software product for IBM's mainframe operating systems. Including free software and low cost hardware through PartnerWorld for Developers, developerWorks and other programs.
Meta Description: [ IBM System z servers: resources for developers. ]

IBM Sales Manual - Organized by product/version, the Sales Manual lists announcement, marketing withdrawal and end of support dates for all releases of software, and relevant parts of the original announcement letter(s). Also lists hardware.
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IBM SHARK Disk - IBM TotalStorage Enterprise Storage Server (ESS) can be used for both mainframe DASD and as a Storage Area Network (SAN) for a broad range of platforms. Originally code-named SHARK.
Meta Description: [ BM TotalStorage Enterprise Storage Server (ESS) helps set new standards for performance, automation and integration as well as for capabilities that support continuous data availability. ]

IBM Worldwide Employee Directory - Search by name for telephone numbers and e-mail addresses of IBM employees, limited to six results to prevent abuse.
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IT In-Depth: For Data Center Professionals - News analysis, technology, editorial, product reviews and pictorial sections covering mainframe, Unix/Linux, software and services.
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ITPapers: IBM Mainframe - A directory of technical white papers, Webcasts, and case studies from IBM and other companies.

Lawrence Wilkinson's IBM 360/30 Saga - Getting an old System/360 Model 30 running DOS/360 in 1982 in New Zealand.

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Marc Niegowski: Systems Programmer At Large - Historical mainframe information plus tips and techniques for Assembler and C/C++. From a Systems Programmer specializing in mainframe telecommunications networks.
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Meta Description: [ Find the latest information on Data Centers, Systems Management and more. ]

SHARE User Group - Independent, volunteer run association providing IBM customers with user focused education, professional networking, and a forum to influence the Information Technology industry.

StorageTek - Storage (tape and disk) for the mainframe and other platforms. Including Storage Area Networks (SAN), WORM (Write Once, Read Many) tape and supporting software and consulting.
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Strange Art Projects: IBM System 370 - A student's 1/48 scale model of an IBM System/370 Model 138 computer system, complete with 3800-1 laser printer. Pictures and the story behind it.

T-Rex - IBM eServer zSeries 990 Mainframe Computer - IBM laid claim to the T-Rex containing the densest electronics in the world: 3.2 billion transistors in 16 chips on 101 layers of ceramic glass connected to 5000 pins by 500 meters of wire, all in a 3.7 x 3.7 x 0.75 module.
Meta Description: [ Redirect to new location for zSeries z990 product page. ]

Technical Support Magazine - NaSPA's mainframe systems programming-oriented technical journal.

The 360 Revolution - IBM's 40th anniversary book, by Chuck Boyer, detailing the history of the System/360; IBM mainframes today are still software-compatible with the System/360.

The Dinosaur Myth - Subtitle: Why the mainframe is the cheapest solution for most organizations. Updated version of the classic Xephon report.

The IBM 360/67 and CP/CMS - Tom Van Vleck's history of the IBM System/360 Model 67 computer and the CP/CMS operating system, which later became z/VM.
Meta Description: [ Personal history of Tom Van Vleck. The IBM 360 model 67 computer, and the CP/CMS operating system. ]

The Mainframe Breakfast Network (MBN) - An informal association of mainframers run by Arcati Research, with monthly newsletter and breakfast sessions in London or Oxford, England. Membership is free.

404 The Mainframe Charter - First announced in mid-2003, IBM initiative to make the mainframe more competitive, most notably in hardware and software pricing. But also by increasing the number of young people with mainframe skills.
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Visara International - Provides SNA, 3270, 5250 and LAN/WAN integration products: displays, printers and controllers, including communication servers and console concentrators.
Meta Description: [ Visara International - providing mainframe and midrange system products, network integration, and advanced services offerings ]

Xephon Co-founder Chris Bunyan Passes Away - A tribute to the late Chris Bunyan, Xephon co-founder and champion of the IBM mainframe.
Meta Description: [ In-depth information about data centers, IBM, z990, z900, z890, grid computing, virtualization, network management ]

z/Journal - An independently-published mainframe-only magazine covering IBM zSeries hardware and the software that runs on it, including the VSE/ESA, z/VM, z/OS and Linux operating systems. Subscriptions are free in the U.S. and Canada.
Meta Description: [ z/Journal is dedicated to providing useful, reliable, and interesting information on a wide variety of topics directly relevant to IT professionals using IBM mainframe systems. ]

404 zSeries e-business - IBM home page for interfacing the mainframe to the Internet. Includes links to news, technical information, products, services, performance, security and support.
Meta Description: [ The page you requested cannot be displayed (HTTP response code 404) ]

zSeries System Programmer Portal - An IBM site providing mainframe hardware and systems software planning and maintenance information for Technical Support staff.
Meta Description: [ System Programmer Portal is an audience based site which provides a customized set of links for the zOS, OS390, MVS, and VM mainframe system programmer. ]

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