English English Wikipedia has an article on:sysplexWikipedia Etymology Blend of systems + complex. Noun sysplex (plural sysplexes) (computing) A group of connected IBM mainframe systems that share resources. 2010, Mike Ebbers, Dino Tonelli, Jason Arnold, Co-locating Transactional and Data Warehouse Workloads on System z, page 245:When an enclave spans a system boundary in a sysplex, it is called a multisystem enclave.Remove adsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads