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'''Geographically Dispersed Parallel Sysplex''' ('''GDPS''') is an extension of Parallel Sysplex of mainframes located, potentially, in different cities. GDPS includes configurations for single site or multiple site configurations:<ref>{{cite conference |first=Riaz |last=Ahmad |date=March 5, 2009 |title=GDPS 3.6 Update & Implementation |publisher=SHARE |___location=Austin, TX |url=http://ew.share.org/proceedingmod/abstract.cfm?abstract_id=19145 |accessdate=April 17, 2009 }}</ref>
* GDPS/HyperSwap Manager: It is based on synchronous [[Peer to Peer Remote Copy]] (PPRC) technology for use within a single data center. Data is copied from the primary storage device to a secondary storage device. In the event of a failure on the primary storage device, the system automatically makes the secondary storage device the primary, usually without disrupting running applications.
* GDPS/PPRC: It is based on synchronous data mirroring technology (PPRC) that can be used on mainframes {{convert|200|km|mi}} apart. In a two-system model, both sites can be administered as if they were one system. In the event of a failure of a system or storage device, recovery can occur automatically, with limited or no data loss
* GDPS/XRC: It is based on asynchronous [[Extended Remote Copy]] (XRC) technology with no restrictions on distance. XRC copies data on storage devices between two sites such that only a few seconds of data may be lost in the event of a failure. If a failure does occur, a user must initiate the recovery process. Once initiated, the process is automatic in recovering from secondary storage devices and reconfiguring systems.
* GDPS/GM: It is based on asynchronous [[IBM Global Mirror]] technology with no restrictions on distance. It is designed to recovery from a total failure at one site. It will activate secondary storage devices and backup systems.
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