SmartTier enables administrators of multi-volume VxFS file systems to manage the placement of files on individual volumes in a volume set by defining placement policies that control both initial file location and the circumstances under which existing files are relocated. These placement policies cause the files to which they apply to be created and extended on specific subsets of a file system's volume set, known as placement classes. The files are relocated to volumes in other placement classes when they meet the specified naming, timing, access rate, and storage capacity-related conditions.
The administrator can create a file allocation policy based on filename extension before new files are created, which will create the datafiles on the appropriate tier during database creation.
The administrator can also create a file relocation policy for database files or any types of files, which would relocate files based on how frequently a file is used.