OS/400
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OS/400


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DEFINITION - OS/400 is IBM's operating system for its AS/400 and AS/400e line of business computers. Because OS/400 is closely attuned to the AS/400 hardware design and generally comes as part of the basic package, there is no alternative operating system to compete with it. OS/400 is built to operate with the AS/400 logical partition (LPAR) architecture, in which multiple instances of the operating system can run concurrently in different partitions. Among other uses, LPAR is useful when migrating to a new release. The old production system can keep operating in one partition while a new system is being tested.

As the AS/400 has evolved to meet the latest trends in business and information technology, OS/400 and its related software has added support for:

  • Applications written in the Java programming language
  • The ability to run Windows 2000/NT applications (when certain other products are installed)
  • The Portable Application Solutions Environment (PASE), which supports a subset of the AIX environment so that Unix applications can be ported and run on the AS/400
  • Lotus Domino, which provides groupware and e-mail from Lotus Notes applications or a standard Web browser

Getting started with OS/400
To explore how the OS/400 is used in the enterprise, here are some additional resources:
Learning guide: Steps to a secure System i: Learn how to maintain a secure AS/400 system. This guide addresses basic security issues are addressed and suggests preventive measures you can use to avoid compromising your system.
Guide to iSeries disaster recovery planning: Learn about different aspects of disaster recovery for the AS/400 including planning, tape recovery, backup and encryption. You'll also find technical advice for implementing strategies such as automation.
Is your AS/400 secure? How a hacker could get valuable information from your system: Shahar Mor demonstrates a few scenarios of how AS/400 security can be compromised using standard desktop tools.

LAST UPDATED: 08 Dec 2008

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More resources from around the web:
- Search400.com has hundreds of tips to help you work with OS/400 or i5/OS.
- Get expert advice on how to manage OS/400 or i5/OS from Search400.com.





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