Compression is supported in Storage Foundation (SF), Storage Foundation and High Availability (SFHA), Storage Foundation for Oracle RAC (SF Oracle RAC), and Storage Foundation Cluster File System High Availability (SFCFSHA). In a clustered environment, such as SF Oracle RAC and SFCFSHA, Symantec recommends that you compress files on a node that has minimal load. In a Fast Failover SFCFSHA environment, Symantec recommends that you compress files on a passive node where the database is offline.