A generic data service (GDS) is a mechanism for making simple applications highly available or scalable by plugging them into the Oracle Solaris Cluster Resource Group Manager (RGM) framework. This mechanism does not require the coding of a data service, which is the typical approach for making an application highly available or scalable.
The GDS model relies on a precompiled resource type, SUNW.gds, to interact with the RGM framework. See Oracle Solaris Cluster Generic Data Service (GDS) Guide for additional information.