Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

Technical Support ............................................................................................... 4
Section 1 SF Oracle RAC concepts and
administration ........................................................ 15
Chapter 1 Overview of Veritas Storage Foundation for Oracle
RAC ................................................................................... 17
About Veritas Storage Foundation for Oracle RAC .............................. 17
Benefits of SF Oracle RAC ........................................................ 17
How SF Oracle RAC works (high-level perspective) ............................. 19
Component products and processes of SF Oracle RAC ......................... 23
Communication infrastructure ................................................. 23
Cluster interconnect communication channel .............................. 25
Low-level communication: port relationship between GAB and
processes ........................................................................ 29
Cluster Volume Manager (CVM) ................................................ 30
Cluster File System (CFS) ......................................................... 32
Oracle Disk Manager ............................................................... 34
Veritas Cluster Server ............................................................. 35
Oracle RAC ........................................................................... 38
RAC extensions ...................................................................... 41
About preventing data corruption with I/O fencing ............................ 43
About SCSI-3 Persistent Reservations ........................................ 44
About I/O fencing operations ................................................... 45
About I/O fencing communication ............................................. 45
About I/O fencing components ................................................. 45
About preferred fencing .......................................................... 47
How disk-based I/O fencing works in different event
scenarios ........................................................................ 49
About CP server ..................................................................... 53
Periodic health evaluation of the clusters ......................................... 71
Contents