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IBM i Access provides benefits such as:. Use out of the box, no programming necessary. Unique products for native Windows, native Linux and browsers. Easy access to all IBM i applications and data anywhere in the network. Middleware for desktop applications to use to access IBM i resources. Designed for central administration and management.
IBM i is an operating system that runs on IBM Power Systems and IBM PureSystems. It was named OS/400 when it was introduced with the AS/400 line of computer systems in 1988, was later renamed i5/OS, and was renamed IBM i in 2008 when IBM Power Systems was introduced.
It is one of the operating systems supported on IBM Power Systems alongside AIX and Linux as well as on IBM PureSystems alongside AIX, Linux and Windows.
History[edit]
The operating system was introduced, under the name OS/400, in 1988, along with the AS/400 line of midrange computers.
In 1999, IBM introduced logical partitioning (LPARs) with i5/OS to support multiple virtual systems on a single hardware footprint.
In 2014, IBM ported Node.js to IBM i.[1]
In 2018, IBM made available the Yum package manager and the capability to install open-source software via RPM packages.[2][3]
Features[edit]
The early IBM System/36 and IBM System/38 series customers were a key target of the AS/400, so the operating system includes backward compatibility with those earlier IBM general business systems.
IBM designed IBM i as a 'turnkey' operating system, requiring little or no on-site attention from IT staff during normal operation. For example, IBM i has a built-in DB2 database which does not require separate installation. Mass storage ('disks') can be RAIDed or mirrored; when either of those options is configured, one or more disk can be replaced without interrupting work. System administration is wizard-driven. Automatic self-care can schedule all common system maintenance, detect many failures and order spare parts and service automatically. Organizations using IBM i sometimes have a pleasant sticker shock when comparing the overhead of cost of system maintenance on other systems.[4] The overall total cost of ownership (TCO) for IBM i on IBM Power Systems is dramatically lower than two competing platforms, like Windows/SQL Server and Linux/Oracle, primarily due to the lack of system management personnel needed; integrated components also lower the TCO.[5]
IBM i programs, like System/38 programs before them, contain both processor-independent 'virtual' binary code and processor-dependent executable binary code. Compilers for IBM i produce the processor-independent code as their output; the operating system automatically translates the processor-independent code into the processor-dependent code as needed, without the need for source code or attention by IT personnel. Notably, when migrating from a legacy processor (for example, from CISC to RISC hardware), if automatic migration is configured and if the original program was created with normal options, the system will rebuild the executable code automatically and in just a few seconds. Migration consists of taking a backup from the old computer, and restoring it on the new.[4]
The system was one of the earliest to be object-based. Unlike traditional operating systems like Unix and Windows NT there are no files, only objects of different types. The objects persist in very large, flat virtual memory, called a single-level store.[4]
Management Interfaces[edit]
IBM Navigator for i is a web-based tool for administration of the system, database, Apache web server, and WebSphere Application Server.
IBM i Access Client Solutions is a Java-based client and a user, development and systems management interface.
PASE[edit]
IBM i also provides an environment for AIX applications to run natively on the OS without the need for an AIX LPAR.[6]
AIX programs are binary compatible with IBM i when using its PASE (Portable Applications System Environment). PASE is essentially 'an operating system within an operating system', supporting the most recent stable version of AIX. Most AIX 5L compatible binaries may be executed without modification or recompilation in the PASE environment. Exceptions to this are programs that contain direct calls to AIX kernel based APIs as there is no AIX kernel in PASE. If necessary an AIX program may be built directly in PASE using a standard AIX XL C/C++ compiler, for example if native APIs are to be used. In that case APIs are provided to translate between the AIX style pointers and the native 16 byte pointers. Support is provided for running both 32-bit and 64-bit AIX executables.
Open-source software[edit]
Open-source software available includes Apache HTTP Server, OpenSSL, Java, Ruby, PHP, Python, Node.js, gcc, Nginx, Git, and much more.[7] Much of this open source software can be installed with the Yum package manager,[8] and formal support for many packages is available from IBM and partners.[9]
Version[edit]
When IBM announced the new Power Systems line of servers on April 2, 2008, they renamed the operating system from i5/OS to IBM i[10] and changed the version identifier format from VxRxMx (Version, Release, Modification, e.g. V6R1M0) to the more standard format (e.g. 6.1).
The latest version of IBM i is 7.4, announced on April 23, 2019 and released on June 21, 2019 (Version Support Schedule).
With 7.1, IBM started delivering more updates to the operating system via Technology Refreshes. These Technology Refreshes enable further value to the operating system without the need of incurring point releases and allowing customers longer periods between upgrades. For 7.1, Technology Refresh 11 was released in October 2015. IBM i 7.2 Technology Refresh 9 was released in September 2018. IBM i 7.3 Technology Refresh 6 was released May 10, 2019.[11]
Version 7.2 was released in May 2014.[12]
Version 7.3 was released in April 2016.[13]
See also[edit]
User groups[edit]
User groups have played a major part in the evolution of IBM i. COMMON is the world’s largest professional association of IBM technology users. It provides independent education, certification, advocacy and networking among users, IBM and related third-party solution providers.[18] The Large User Group (LUG),[19] whose membership consists of major corporations, is a major influence for current and future development of IBM i. Both COMMON and LUG work with IBM regularly to help provide constructive feedback and perspective to IBM i platform direction. The Young i Professionals (YIPS)[20] is a subset of COMMON that has been significant in influencing the direction of the IBM i.
References[edit]
External links[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=IBM_i&oldid=938161563'
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