The FSPM driver, a Path Control Module (PCM) that works with the AIX Multipath I/O (MPIO) driver, manages I/O to storage devices over the data path.
The
FSPM driver:
- 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
- Provides load balancing across the best available paths
- 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.