Using Serviceguard Extension for RAC, 5th Edition, June 2007

Serviceguard Configuration for Oracle 9i RAC
Planning Database Storage
Chapter 3134
CFS and SGeRAC is available in selected HP Serviceguard Storage
Management Suite bundles.
For CFS 4.1, refer to the HP Serviceguard Storage Management
Suite Version A.01.01 Release Notes.
For CFS 5.0, refer to the HP Serviceguard Storage Management
Suite Version A.02.00 Release Notes.
Considerations on using Raw Volumes for RAC datafiles and
Server Management storage (SRVM)
Use the following list when considering to use Raw Volumes for database
storage:
• SLVM is part of SGeRAC.
• Create volumes for each datafile.
• CVM 4.x or later
— Disk group activation performed by disk group multi-node
package.
— Disk group activation performed by application package (without
the HP Serviceguard Storage Management Suite bundle).
• CVM 3.x
— Disk group activation is performed by application package.
Volume Planning with CVM
Storage capacity for the Oracle database must be provided in the form of
volumes located in shared disk groups. The Oracle software requires at
least two log files (and one undo tablespace for Oracle9) for each Oracle
instance, several Oracle control files and data files for the database itself.
For all these files, Serviceguard Extension for RAC uses HP-UX raw
volumes, which are located in disk groups that are shared between the
nodes in the cluster. High availability is achieved by using high
availability disk arrays in RAID nodes. The logical units of storage on
the arrays are accessed from each node through multiple physical
volume links via DMP (Dynamic Multi-pathing), which provides
redundant paths to each unit of storage.