Dataspaces and Hiperspaces | Wikipedia audio article
Channel: wikipedia tts
Date: 17/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Z/Architecture


00:01:36 1 Code (or mixed) spaces
00:02:30 2 Data-only spaces
00:02:48 2.1 Dataspaces and hiperspaces
00:03:54 2.2 IBM mainframe expanded storage
00:06:46 2.3 MVPG and ADMF
00:06:56 2.3.1 MVPG
00:08:05 2.3.2 ADMF
00:08:59 3 z/Architecture operating systems



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SUMMARY
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z/Architecture, initially and briefly called ESA Modal Extensions (ESAME), is IBM's 64-bit instruction set architecture implemented by its mainframe computers. IBM introduced its first z/Architecture-based system, the z900, in late 2000. Later z/Architecture systems include the IBM z800, z990, z890, System z9, System z10, zEnterprise 196, zEnterprise 114, zEC12, zBC12, z13, and z14.
z/Architecture retains backward compatibility with previous 32-bit-data/31-bit-addressing architecture ESA/390 and its predecessors all the way back to the 32-bit-data/24-bit-addressing System/360. The IBM z13 is the last z Systems server to support running an operating system in ESA/390 architecture mode. However, all 24-bit and 31-bit problem-state application programs originally written to run on the ESA/390 architecture will be unaffected by this change.
Each z/OS address space, called a 64-bit address space, is 16 exabytes in size. A z/OS address space is 8 billion times the size of the former 2-gigabyte address space.