Adabas Parallel Services and Adabas Cluster Services

Adabas Parallel Services is very similar to another Adabas add-on product, Adabas Cluster Services. As shown in the following table, the differences between the two are the mechanisms used for inter-nucleus communication and for maintaining and accessing the shared cache and lock data:

Service Adabas Parallel Services Adabas Cluster Services
Architecture all nuclei on same system image nuclei on different system images in parallel sysplex (z/OS only)
Communication (inter-nucleus) via inter-process communication (ADALNK) via cross-system coupling (XCF) services
Cache in shared data space or 64-bit addressable virtual storage in coupling facility
Lock in shared data space in coupling facility