Data Path

Oracle FS Path Manager (FSPM) uses the Linux multipath framework (device-mapper and multipath-tools) to provide paths for reading and writing data to LUNs on the Oracle FS System. FSPM includes plug-in modules for the Linux multipath-tools. These plug-ins provide increased multipath functions when managing Oracle FS System LUNs.

The Linux multipath framework:

Controls and manages all data paths to the Oracle FS System LUNs
Groups multiple data paths to an Oracle FS System LUN and presents this group to the host operating system as a single LUN or drive
Determines which data paths to use
Identifies and uses optimized data paths when possible
Handles data path failover and failback
Manages data path errors

A path that provides the best performance is referred to as an optimized path and is the preferred path for data transfer.