If you choose to use it, set up multipathing before you install Adaptive Server.
On AIX, Multiple Path I/O (MPIO) is installed and configured as part of BOS installation. No further configuration is required, but you can add, remove, reconfigure, enable, and disable devices (or device paths) using SMIT, Web-based System Manager, or the command line interface.
By default, MPIO is enabled on all disks and LUNs (logical unit numbers) that have this capability, which prevents third-party multipathing drivers (such as Veritas DMP or EMC PowerPath) from managing the paths to such devices. To allow a third-party multipathing driver to manage multipathing instead of MPIO, install suitable Object Data Manager (ODM) definitions for the devices on the host.
The /dev/rhdiskN devices are persistent. These are the device names that should be used to access the multipathed devices.