5 Things To Know About IBM HTTP Server on z/OS
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Users of z/OS for the past several years have had a choice of two IBM HTTP Servers (IHS) that they can use. Now one has become strategic while the other will become unsupported. IHS powered by Apache supports IPv6, 64-bit execution, and includes security authentication and authorization capabilities similar to those provided in IHS powered by Domino. A change from the Domino powered to the Apache powered IHS has become necessary.
Here are five points you should know about HTTP on z/OS and the migration from Domino to Apache
The original HTTP Server for use on z/OS, introduced in the 1990s, was often referred to as the “Domino Go Webserver”, DGW, IBM HTTP Server V 5.3, or simply IHS. When the WebSphere Application Server product became available on z/OS around 2003, this included an HTTP Server based on the widely-used Apache HTTP Server. This has become the strategic HTTP server on z/OS, and the original one will no longer be supported after z/OS R2.1.
2. Migrate to use the advantages of IHS powered by Apache while using all benefits of IHS powered by Domino
The IHS powered by Apache combines all benefits of IHS powered by Domino, such as security authentication and authorization capabilities, with its own benefits. These include IPv6 support and a 64-bit execution.
3. Explore the differences between Apache and Domino
In addition to the differences in IPv6 and 64-bit support, there are more that make the IBM HTTP Server powered by Apache a good choice. IBM HTTP Server DGW runs with a fixed number of threads by default while IBM HTTP Server powered by Apache runs multiple processes with multiple threads at startup time. More processes and threads can be added dynamically if the demand increases.
4. Three keys to have a successful migration? Planning! Planning! Planning!
According to a wise old computer programmer, there is only one key factor when migrating a system: Planning. A proper migration helps you to think of every aspect. There are four questions that should make your migration plan helpful and detailed:
5. C as a programming language brings you advantages
Apache uses the C language for the implementation of its HTTP web server. It is widely used on many operating systems and has a large user community. This means you can extend the core capability by developing your own modules or using third party modules. The large user community can provide advice and examples of how the Apache HTTP Server is used.
To read more about IBM HTTP Server on z/OS and its migration, have a look at our Solution Guide: IBM
Benjamin Köhler works within the IBM Redbook Team with technical experts to create books, guides, blogs, and videos. Follow Benjamin on Twitter at @koehlerBenjamin.