In the context of IBM mainframe computers in the S/360 line, a data set (IBM preferred) or dataset is a computer file having a record organization. Use...
14 KB (1,572 words) - 15:00, 28 May 2025
IBM mainframes are large computer systems produced by IBM since 1952. During the 1960s and 1970s, IBM dominated the computer market with the 7000 series...
16 KB (1,805 words) - 13:50, 1 May 2025
its IBM System/360 and still being emulated on IBM mainframes. It is a self-defining format with each data record represented by a Count Area that identifies...
34 KB (3,928 words) - 16:27, 28 May 2025
mid-1990s, when CMOS mainframe designs replaced the older bipolar technology. IBM claimed that its newer mainframes reduced data center energy costs for...
35 KB (3,764 words) - 00:15, 5 June 2025
indicates a line on the page where a footer can be printed. Print data sets on IBM mainframe operating systems may have either of two variants of printer control...
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IBM System z9 is a line of IBM mainframe computers. The first models were available on September 16, 2005. The System z9 also marks the end of the previously...
15 KB (1,811 words) - 05:46, 8 December 2022
all IBM mainframe operating systems included sort/merge utilities. With the announcement of virtual storage operating systems, DOS/VS and OS/VS, IBM unbundled...
8 KB (1,043 words) - 13:20, 27 February 2024
The history of IBM mainframe operating systems is significant within the history of mainframe operating systems, because of IBM's long-standing position...
51 KB (5,935 words) - 20:24, 25 May 2025
the 1980s, IBM and other vendors have created PC-based IBM mainframe-compatible systems which are compatible with the larger IBM mainframe computers....
24 KB (3,074 words) - 19:48, 27 January 2025
The IBM System/360 (S/360) is a family of mainframe computer systems announced by IBM on April 7, 1964, and delivered between 1965 and 1978. System/360...
83 KB (8,931 words) - 04:31, 25 May 2025
announced as part of the IBM 9340 channel-attached, count key data (CKD) DASD subsystem family which attached to IBM mainframes including the ES/9000 processor...
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in 1971 and normally used to communicate with IBM mainframes. The 3270 was the successor to the IBM 2260 display terminal. Due to the text color on the...
89 KB (9,000 words) - 17:30, 16 February 2025
Fixed-block architecture (category IBM storage devices)
format used on IBM's mainframe hard disk drives beginning in 1964 with its System/360. From RAMAC until the early 1960s most hard disk drive data were addressed...
8 KB (942 words) - 22:30, 15 January 2025
Z/Architecture (redirect from IBM mainframe expanded storage)
(ESAME), is IBM's 64-bit complex instruction set computer (CISC) instruction set architecture, implemented by its mainframe computers. IBM introduced its...
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Job Control Language (redirect from IBM JCL)
Job Control Language (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a...
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platforms, including the IBM RS/6000 series and later Power and PowerPC-based systems, IBM System i, System/370 mainframes, PS/2 personal computers,...
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by IBM for the IBM z16 series mainframe computers. The processor was announced at the Hot Chips 2021 conference on 23 August 2021. Telum is IBM's first...
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DSN may refer to: Data set (IBM mainframe) Name, the name of a computer file having a record organization Data source name, a data structure used to describe...
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INDEXED IBM PL/I uses the file attribute ENVIRONMENT(INDEXED) or ENVIRONMENT(VSAM) to declare an indexed file. B-trees Hash table Data set (IBM mainframe) Legacy...
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cluster of IBM mainframes acting together as a single system image with z/OS. Used for disaster recovery, Parallel Sysplex combines data sharing and...
16 KB (1,853 words) - 18:34, 28 August 2024
The IBM System/390 is a discontinued mainframe product family implementing ESA/390, the fifth generation of the System/360 instruction set architecture...
45 KB (3,649 words) - 21:14, 24 May 2025
The z13 is a microprocessor made by IBM for their z13 mainframe computers, announced on January 14, 2015. Manufactured at GlobalFoundries' East Fishkill...
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(zEnterprise EC12 or just z12) is a chip made by IBM for their zEnterprise EC12 and zEnterprise BC12 mainframe computers, announced on August 28, 2012. It...
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The IBM 704 is the model name of a large digital mainframe computer introduced by IBM in 1954. Designed by John Backus and Gene Amdahl, it was the first...
20 KB (1,888 words) - 12:35, 21 March 2025
Db2 is a family of data management products, including database servers, developed by IBM. It initially supported the relational model, but was extended...
40 KB (4,454 words) - 00:58, 6 June 2025
ISPF (category IBM mainframe operating systems)
them execute modules of IBM mainframe utility programs to do the actual work. ISPF is frequently used to manipulate z/OS data sets via its Program Development...
13 KB (1,566 words) - 14:06, 12 May 2025
consoles. IBM z/Architecture processors: for z/Architecture mainframes IBM z10 IBM z196 IBM zEC12 IBM z13 IBM z14 IBM z15 IBM Telum IBM 1011: IBM 1401/1440/1460/1414...
189 KB (19,566 words) - 19:34, 30 May 2025
The IBM System/370 (S/370) is a range of IBM mainframe computers announced as the successors to the System/360 family on June 30, 1970. The series mostly...
99 KB (7,314 words) - 19:41, 25 May 2025
floating-point was added to IBM System z9 GA2 in 2007 using millicode and in 2008 to the IBM System z10 in hardware. Modern IBM mainframes support three floating-point...
23 KB (2,208 words) - 07:34, 2 November 2024