Standards

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File System Mount Point Directory Name Standards

This document describes the standards for assigning AIX filesystem mount point (MtPt) directory names. A single standard has been developed for use in standalone, High Availability, and Disaster Recovery environments. This filesystem mount point directory naming standard provides the mechanism to assign enterprise wide unique names to all AIX filesystem mount point directory's and will eliminate naming conflicts in the event of a manual or automated failover, or if multiple instances of an application are running on a single server.

To assign enterprise wide unique LV names, the system administrator must first define the Resource Groups, Volume Groups, and Logical Volumes. Once these have been defined, the filesystem mount point directory names can be assigned. Typically a filesystem mount point is required for each logical volume, therefore the mount point can usually be based on the logical volume name, or at a minimum the resource group name.

To define a filesystem mount point directory name, obtain the 8 character resource group name, then depending upon the applications filesystem requirements, use the RG name as the mount point, or add sub-directories to make it enterprise wide unique.

The filesystem mount point directory name shall consist of at least 8 characters, but may be of a variable length:

/ + ApplicationCode + Environment + Function + Company + Sequence ID + ( LV Sequence ID or Directory Structure )
         3 char     +    1 char   +  1 char  +  2 char +   1 char    +      4 or more char

As an example, a resource group named "egaapmx0", may have multiple file systems associated with it:

RG Name Component	Optional Logical Volume Sequence ID	Optional Sub-Directories	Filesystem Mount Point
egaapmx0		db2_08_01/bin	/egaapmx0/db2_08_01/bin
egaapmx0		db2_08_01/data	/egaapmx0/db2_08_01/data
egaapmx1	mq01		/egaapmx1mq01
egaapmx1	mq02		/egaapmx1mq02
egaapmx1	mq03		/egaapmx1mq03