IBM Parallel Sysplex: Difference between revisions

Revision as of 13:54, 22 June 2012

Revision as of 04:20, 19 July 2012

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Components of a Sysplex include:

* A common time source to synchronize all member systems' clocks. This can be done withinvolve either a Sysplex timer (Model 9037), or withthe Server Time Protocol (STP);

* [[Global Resource Serialization]] (GRS), which allows multiple systems to access the same resources concurrently, serializing where necessary to ensure exclusive access;

* Cross System Coupling Facility ([[IBM XCF|XCF]]), which allows systems to communicate [[peer-to-peer]];

* Couple Data Sets (CDS);

Users of a (base) Sysplex includesinclude:

* Console services – allowing one to merge multiple MCS consoles from the different members of the Sysplex, providing a single system image for Operations

* Automatic Restart Manager (ARM) – Policy to direct automatic restart of failed jobs or started tasks on the same system if it is available or on another LPAR in the Sysplex