Definition of irrigation. 1  1 : the therapeutic flushing of a body part with a stream of liquid. 2  2 : the watering of land by artificial means to foster plant growth.
Answer: To start with, Oracle Real Application Clusters (RAC) are a database system involving a configuration of multiple hosts or servers joined together with clustering software and accessing the shared disk storage structures.
Introduced with Oracle ASM 11g Release 2, Oracle ASM Cluster File System (Oracle ACFS) is a general purpose POSIX compliant cluster file system implemented as part of Oracle Automatic Storage Management (Oracle ASM).