| slovo | definícia |
virtual storage
(encz) | virtual storage, n: |
virtual storage
(wn) | virtual storage
n 1: (computer science) memory created by using the hard disk to
simulate additional random-access memory; the addressable
storage space available to the user of a computer system in
which virtual addresses are mapped into real addresses
[syn: virtual memory, virtual storage] |
| | podobné slovo | definícia |
multiple virtual storage
(foldoc) | Multiple Virtual Storage
MVS
MVS/ESA
MVS/OE
MVS/Open Edition
MVS/SP
MVS/XA
(MVS) Release 2 of OS/VS2, called MVS
because it had multiple 16 MB virtual address spaces, in
contrast to SVS. MVS ran on the IBM 390 series
mainframes. It became MVS/SP, then MVS/XA (with 31-bit
addressing) and then MVS/ESA.
MVS/Open Edition (MVS/OE), aimed at the growing open systems
market, added TCP/IP and Unix support in an MVS address
space, allowing users to run IBM, CICS-type applications,
batch applications and Unix.
MVS/ESA was repackaged as OS/390 as a marketing exercise but
it's basically the same thing.
Version: 5.1.
[Features? Dates?]
(1999-01-20)
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single virtual storage
(foldoc) | OS/VS2
Single Virtual Storage
SVS
An operating system from IBM, released
with the IBM S/370 and originally known as OS/MVT. OS/VS2
R1 was known as SVS (Single Virtual Storage) as it had a
single 16 MB virtual address space. OS/VS2 R2 was known as
MVS - Multiple Virtual Storage.
(1999-01-13)
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virtual storage access method
(foldoc) | Virtual Storage Access Method
Virtual Sequential Access Method
VSAM
(VSAM) An IBM disk file storage scheme first used
in S/370 and virtual storage. VSAM comprises three access
methods: Keyed Sequenced Data Set (KSDS), {Relative Record
Data Set} (RRDS), and Entry Sequenced Data Set (ESDS).
Both IMS/DB and DB2 are implemented on top of VSAM and use
its underlying data structures.
["Storage" or "Sequential"?]
(2002-07-26)
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virtual storage extended
(foldoc) | Virtual Storage Extended
VSE
(VSE, formerly DOS/VSE) is a
multitasking, IBM 370-architected operating system
similar to Multiple Virtual Storage (MVS).
VSE run jobs in partitions rather than address spaces, and
uses POWER for input/output rather than JES, but is
largely similar to MVS. Subsequent VSE/ESA releases gave
VSE the XA-370 channel architecture, 31-bit virtual and real
storage support, and data spaces. VSE is the IBM operating
system on one-third of installed IBM 4381s and a significant
proportion of IBM 9370s as well. It offers {transaction
processing} and batch processing capabilities well beyond
Virtual Machine's current capabilities, and has a close
affinity with MVS.
(1997-06-09)
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