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Why oh why would IBM use AIX for Mainframes? High end UNIX servers yes, Mainframes definitely not! UNIX is neither stable nor secure enough to be run as a Mainframe OS.
The only bit of UNIX code in zOS is the sandboxed UNIX subsystem, used to enable TCP/IP support in the operating system. In no way does that subsystem have access to the rest of the system without jumping through security hoop after security hoop first.
There are specific processors built in to the Mainframe where the sole reason is to run Linux, but the only reason they are there is so that businesses can run a FLOSS stack on their Mainframes in a sandboxed environment. Mainframe software usually costs a fortune to buy and maintain, the price of which makes the cost of the hardware pail in comparison, so being able to run Tomcat on zLinux is far cheaper than say Websphere on zOS.
But if IBM where to announce the replacement of zOS with AIX, I can guarantee that customers would no longer be renewing their contracts.




Member since:
2007-02-17
Remember the B in IBM. Where they donate code it is only to ditch unmarketable internal code to boost their open source credentials or to kick a rival (eg Eclipse vs Netbeans). Linux is 'tolerated' only to the expense of SPARC/Solaris at IBM, when the shoe is on the other foot and AIX starts losing share to Linux watch the stance change. "
Au contraire, IBM would probably use Linux in its own products where it made sense. AIX for mainframes, and Linux embedded in products such as this:
http://www-03.ibm.com/products/retail/products/pos/
or this:
http://en.wikipedia.org/wiki/Blue_Gene
or this:
http://en.wikipedia.org/wiki/Cell_processor
Edited 2009-07-24 11:13 UTC