A Web-based application used to calculate the size of each IBM software product's structure within a Parallel Sysplex Coupling Facility (CF).

Originally the Hierarchical Storage Manager (hsm), now "a functional component of DFSMS that provides facilities for managing storage devices" (IBM).

IBM home page for Resource Access Control Facility (RACF) security software. Introduction with links to a technical overview, news, downloads, user groups, past and future presentations, migration, library, FAQs and education.

IBM home page for the z/VM implementation of Resource Access Control Facility. Information on the latest version with links to an overview, news, downloads, user groups, past and future presentations, migrating, library, FAQs and education. RACF is se...

A specially priced offering of z/OS providing select z/OS function for the zSeries 800.

IBM home page for zSeries/Virtual Storage Extended (z/VSE). Information on the latest version with links to software, news, solutions, service and support, downloads, library and education.

The storage management components of z/OS, including DFSMSdfp, DFSMSdss, DFSMShsm and DFSMSrmm.

IBM home page for zSeries/Operating System (z/OS). Information on the latest version with links to an overview, recent announcements, software, migration and installation, news, support, downloads, education, library and ease of use issues. z/OS repla...

IBM's own history site, with pages on many of their significant systems (see especially the "Exhibits" and "Documents" sections).

Includes a Search facility. Catalog link then Products and Services includes information on and pictures of many historical pieces of mainframe hardware.