<!-- Deleted image removed: --><!-- Unsourced image removed: -->IBM System z9
is a line of IBM mainframe
. It was announced on July 25, 2005 and the first models were available on September 16, 2005. The System z9 also marks the end of the previously used eServer zSeries
naming convention, and it is the last z/Architecture 1 (ARCHLVL 2) machine.
System z9 is a mainframe using the z/Architecture
, previously known as ESAME
. z/Architecture is a 64-bit
architecture which replaces the previous 31-bit
architecture while remaining completely compatible with it as well as the older 24-bit
architecture. The primary advantage of this arrangement is that intensive applications like DB2
are no longer bounded by 31-bit memory restrictions while older applications can run without modifications.
With the announcement of the System z9 Business Class server, IBM has renamed the System z9 109 as the System z9 Enterprise Class server. IBM documentation abbreviates them as the z9 BC and z9 EC, respectively.
There are several functional enhancements in the System z9 compared to its zSeries predecessors. Some of the differences include:
Support Element & HMC
The Support Element
is the most direct and lowest level way to access a mainframe. It circumvents even the Hardware Management Console
and the operating system
running on the mainframe. The HMC is a PC
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