Veritas Storage Mapping is a feature included with Veritas Storage Foundation for DB2 Enterprise Edition.

Veritas has defined and implemented a library called Veritas Mapping Service (VxMS) that provides a mapping interface to VxFS file systems, VxVM volumes, and physical disks. With Veritas Storage Foundation for DB2, you can take advantage of this feature to map datafiles or containers, depending on your database, to physical devices and display storage object I/O statistics. With the vxstorage_stats command, you can view the complete I/O topology mapping of datafiles or containers through intermediate layers like logical volumes down to actual physical devices. You can also use vxstorage_stats to view statistics for VxFS file systems, VxVM volumes, and physical devices. This information can be used to determine the exact location of a data block on a disk and to help identify hot spots.

This command can help you avoid I/O contention. For example, you can use the information to avoid backing up two tablespaces that share the same physical disk.

Both storage object statistics and the storage structure are displayed in the Veritas Storage Foundation for DB2 GUI.

See About Storage Mapping .