Configuring Storage for Oracle Automatic Storage Management

Identify storage requirements and Oracle ASM disk group options.

Note:

Oracle ASM Filter Driver (ASMFD) is deprecated on both Linux and Oracle Solaris beginning with Oracle Database 19c. It will be desupported in a future release.

On Linux systems running kernel 5.14 or higher (including Oracle Linux, RedHat Enterprise Linux, and SUSE Linux Enterprise Server), ASMFD filtering is already disabled and will not be supported going forward. Oracle recommends moving to ASMlib v3 for those environments, as it provides equivalent functionality. For details, see My Oracle Support Note Document 2806979.1. Migration steps are available. On Oracle Solaris, ASMFD is deprecated, but remains fully supported. No immediate action is required until a formal desupport notice is issued.

• Identifying Storage Requirements for Oracle Automatic Storage Management
  To identify the storage requirements for using Oracle ASM, you must determine the number of devices and the amount of free disk space that you require.
• Oracle Clusterware Storage Space Requirements
  Use this information to determine the minimum number of disks and the minimum disk space requirements based on the redundancy type, for installing Oracle Clusterware files for various Oracle Cluster deployments.
• Using an Existing Oracle ASM Disk Group
  Use Oracle Enterprise Manager Cloud Control or the Oracle ASM command line tool (asmcmd) to identify existing disk groups, and to determine if sufficient space is available in the disk group.
• About Upgrading Existing Oracle Automatic Storage Management Instances
  Oracle Automatic Storage Management (Oracle ASM) upgrades are carried out during an Oracle Grid Infrastructure upgrade.
• Selecting Disks to use with Oracle ASM Disk Groups
  If you are sure that a suitable disk group does not exist on the system, then install or identify appropriate disk devices to add to a new disk group.
• Specifying the Oracle ASM Disk Discovery String
  When an Oracle ASM instance is initialized, Oracle ASM discovers and examines the contents of all of the disks that are in the paths that you designated with values in the ASM_DISKSTRING initialization parameter.
• Creating Files on a NAS Device for Use with Oracle Automatic Storage Management
  If you have a certified NAS storage device, then you can create zero-padded files in an NFS mounted directory and use those files as disk devices in an Oracle ASM disk group.