The shared storage for SF Oracle RAC must support SCSI-3 persistent reservations to enable I/O fencing. SF Oracle RAC uses two types of shared storage:
You can choose to verify that the disks you plan to use for shared data storage or for coordinator disks at this time, before you configure the SF Oracle RAC components, or later, after configuring the components. In either case, review the guideline included in the installer and refer to the procedures in the section Setting up I/O fencing.
If you test the disks now and discover that the disks are not SCSI3 compliant, you can delay the configuration tasks until you obtain and verify compliant disks.
If, however, you have high confidence that the disks you plan to use are compliant, you can skip testing now and proceed with the configuration SF Oracle RAC components. You can test the storage later.
Checking that disks support SCSI-3 involves:
vxfentsthdw
utility to perform the check
Use the SF Oracle RAC configuration program to review this system check for SCSI support.
To view guidelines for checking SCSI-3 support
root
user.
installsfrac
script:
By default, the installsfrac program uses SSH for remote communication. However, to use RSH, specify the -rsh option with the installsfrac program.
# ./installsfrac -rsh -configure