Understanding Oracle 10g Cluster Ready Services (CRS)

How does Cluster Ready Services work with Storage Foundation for RAC?



  • Storage Foundation for RAC provides improved availability by providing sophisticated clusterware on top of what Oracle 10g CRS provides.

  • Storage Foundation for RAC provides sophisticated storage frame work for Oracle 10g Real Application Cluster using CVM, CFS, ODM and VCS.

  • Storage Foundation for Oracle RAC provides libraries for IPC (skgxp) and Cluster Membership (skgxn). CRS piggybacks on GAB and LLT for IPC, LLT and LMX for Cluster Memberships, and other communication between respective daemons (CCSD, EVMD, CRSD) on each node.

  • Voting disk is configured using CVM+CFS

  • Private IP address for CRS is made highly available using PrivNIC agent.