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Sysplex

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Sysplex

(operating system)
An IBM term for communicating MVS systems. See also "Parallel Sysplex".
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

Sysplex

(SYStem comPLEX) The multiprocessing capability in IBM mainframes. Introduced with MVS/ESA 4.3 in 1991, Sysplex links multiple system images within multiple machines and treats them all as a single image. Sysplex added the external Sysplex Timer to synchronize internal clocks, because if a failure occurs in a multiprocessor complex, precise transaction time stamps are required for accurate rollback and recovery. It also added XCF (Cross-system Communications Facility), which is software that manages the interconnections between machines.

The addition of one or more Coupling Facilities creates a Parallel Sysplex system that provides high-level clustering that includes data sharing with guaranteed integrity and extensive resource sharing between the systems. See Coupling Facility and Parallel Sysplex.
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References in periodicals archive
"The first people to get this right were IBM with DB2 and the Sysplex mainframe clustering technology.
Cluster lustre
Landmark's TMON for USS provides a snapshot of the activity on your current image or sysplex, emphasizing resources being consumed by UNIX workloads and identifying potential performance problems.
LANDMARK SYSTEMS DEBUTS OS/390 UNIX SYSTEM SERVICES MONITOR
IBM is offering the discount to customers who move to the zSeries 800, 900, or 990 and who acquire the z/OS software under a Workload License Charge (WLC) or a Parallel Sysplex License Charge (PSLC) pricing scheme.
IBM Gives Software Discounts to Spur Upgrades to zSeries
With TOM, MAINVIEW AutoOPERATOR for OS/390 allows customers to more fully and easily control key IT assets across the Sysplex, setting a new standard in assuring the availability and interdependencies of key resources.
MAINVIEW INCREASES ENTERPRISE PRODUCTIVITY
Availability figures range from 95-plus percent for NT-based servers to 99.999-plus percent for enterprise OS/390 and z/OS Parallel Sysplex servers.
Backup is important, recovery is everything
The servers work together with Allstate's traditional IBM ES/9000 mainframes in a new type of architecture called Parallel Sysplex, an arrangement of systems and connectivity technology that allows processors in the mainframe complex to share work loads.
Re-engineering in practice
The IBM Sysplex and original Digital VAXcluster typify this design.
Parallel database systems: the future of high performance database systems
Huawei Technologies Co Ltd, a provider of next-generation telecomms network solutions, announced on Thursday (25 September) that its OptiX DWDM (Dense Wavelength Division Multiplexer) products suite has successfully completed interoperability testing and qualification for information technology company IBM (NYSE:IBM) GDPS (Geographically Dispersed Parallel Sysplex) and STP (Server Time Protocol) system environments.
Huawei's OptiX DWDM completes interoperability testing and qualification for IBM GDPS and STP
In addition, future products in the System Advisor family will simplify the configuration in areas such as Sysplex operation, workload management, system parameters, system logging, restart management, data integrity and mainframe storage.
BMC DEBUTS SYSTEM ADVISOR TO MANAGE IBM Z/OS AND OS390
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