– System Z on IBM
– System Z on Wikipedia
IBM System z, or earlier IBM eServer zSeries, is a brand name designated by IBM to all its mainframe computers.
In 2000, IBM rebranded the existing System/390 to IBM eServer zSeries with the e depicted in IBM’s red trademarked symbol. But because no specific machine names were changed for System/390, the zSeries in common use refers only to one generation of mainframes, starting with z900.
Since April 2006, with another generation of products, the official designation has changed to IBM System z, which now includes both[1] older IBM eServer zSeries, the IBM System z9 models, and the newer IBM System z10 models.
Both zSeries and System z brands are named for their availability — z stands for zero downtime. The systems are built with spare components capable of hot failovers to ensure continuous operations.[2].
Supports the z/OS, Linux on zSeries, z/VM, z/VSE, z/TPF, and MUSIC/SP operating systems.
Read more about Operating System for IBM System Z.
Models (chronological order)
The older S/390 IBM mainframe servers are considered history since support for the last S/390 compatible version of z/OS (1.5) was dropped on March 31, 2007.[3]
zSeries mainframes:
- z900 (2064 series), for larger customers (2000)
- z800 (2066 series), entry-level, less powerful variant of the z900 (2002)
- z990 (2084 series), successor to larger z900 models (2003)
- z890 (2086 series), successor to the z800 and smaller z900 models (2004)
System z9 mainframes:
- z9 Enterprise Class (2094 series), introduced in 2005 initially as z9-109, beginning the new System z9 line
- z9 Business Class (2096 series), successor to the z890 and smallest z990 models (2006)
System z10 mainframe:
- z10 Enterprise Class (2097 series), introduced on February 26, 2008
- z10 Business Class (2098 series), introduced on October 21, 2008
Kleber Rodrigo de Carvalho