Evolution of the AS400 and ISeries

In 1988, IBM introduced the AS400® as a servertrack potential security risks. Both production and
solution for midsize businesses and departmentsbackup data are encrypted, and SSL VPN is used to
within larger enterprises. Over time, IBM realized thatensure the network is secure.
in order to fulfill their vision of replacing PC and UnixApplication Development
servers throughout organizations worldwide, theWith support for services oriented architecture
AS400 would need to be easily integrated with(SOA), IBM Rational development tools, and UNIX
distributed networks and web applications. Toapplication runtime, the iSeries provides a myriad of
accomplish this, IBM redesigned the AS400 to useoptions for application development. Languages
eServer i5 servers with POWER5® processors,supported by the iSeries include C, RPG, COBOL,
and rebranded the AS400 as the IBM iSeries®.C++, Java, EGL, PHP and CL.
The strategic features of the iSeries include:Administration
- IntegrationStorage management is integrated into the system
- Virtualizationand the system hosts managed storage for I, AIX,
- OptimizationLinux, Windows and VMware. The administration
- Securitymodule is web-based for easy access. IBM Systems
- Support for a wide range of applicationDirector provides a single, consistent user interface
development mediafor managing both physical and virtual systems.
- Simplified administrationScalability
- ScalabilityWith many systems, the system's technology is
Integrationintegrated with the machine's interface, meaning that
The iSeries includes an integrated standards-basedupgrades are disruptive to daily business activities.
DB2 database for managing enterprise data. TheWith the iSeries however, upgrades are automatic,
iSeries includes an integrated Apache HTTP serverand the separation of technology from interface
and web application server for web-based applicationmakes the process virtually seamless. With IBM's
deployment, and a Java/J2EE web-servicesCapacity on Demand feature, you can activate only
environment for web application development. Manythe processors and memory that you need, making
popular development technologies are also integratedthe iSeries scalable, flexible and cost efficient.
with the iSeries, including SQL, mySQL, .NET, DRDACommunication
CLI, ODBC and JDBC. Windows, UNIX, and NFS fileTo communicate with the IBM AS400 or iSeries from
systems are supported.your Windows PC, you will need to use a terminal
VirtualizationiSeries virtualization allows organizationsemulator. Terminal emulators intercept and translate
to manage multiple applications and processes usingthe 5250 data stream so that your PC can
the integrated workload manager, shared processorunderstand, display, and manipulate it. One such
pools and automatic performance balancing.terminal emulator is Zephyr's PASSPORT, which
Optimizationprovides TN5250 and TN5250E emulation.
The clustered architecture, transaction logging andConclusion
mirroring capabilities of the iSeries provide flexibilityThe key to the success of the AS400 iSeries has
and reliability. IBM also integrates tools for managingbeen the integration of relational database, security,
clusters.web services, networking and storage management.
SecurityAccording to IBM, over 5,000 ISV solutions are
The security model for the IBM iSeries issupported on the iSeries. Virtualization support allows
object-based, which simplifies deployment andorganizations to run various applications
enhances the system's ability to resist viruses. Thesimultaneously, allowing the organization to make the
iSeries can not only detect intrusion, but has built-inmost of its resources.
methods to prevent it and provides an audit log to