IBM software support
Home page for the ibm software support (esupport) web site. allows ibm software customers to search ibm's software support knowledge base, download software updates and patches, submit and track problems online, and customize their software support (esupport) services.
http://www-306.ibm.com/software/support/
IBM sofware support lifecycle
The matrix below lists the ibm product versions and release which have either reached end-of-support, or have announced end-of-support
http://www-306.ibm.com/software/info/supportlifecycle/
IBM Support
IBM Support
http://techsupport.services.ibm.com/server/support?view=eservers
S/390 Technical Support
S/390 Technical Support
http://techsupport.services.ibm.com/server/support?view=zseries