Sysplex


Also found in: Acronyms.

Sysplex

(operating system)
An IBM term for communicating MVS systems. See also "Parallel Sysplex".

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.
References in periodicals archive ?
"The first people to get this right were IBM with DB2 and the Sysplex mainframe clustering technology.
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.
Much lighter and less expensive than previous WDM units, the CN 4200 incorporates Distributed Parallel Sysplex, a mainframe server clustering technology.
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.
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.
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.
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.
The IBM Sysplex and original Digital VAXcluster typify this design.
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.
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.