If you choose to use it, set up multipathing before you install Adaptive Server.
The Solaris Multiplexed I/O (MPxIO) feature is a multipathing solution for storage devices that is part of the Solaris operating environment. The stmsboot program is an administrative command to manage enumeration of multipath-capable devices with Solaris I/O multipathing. Solaris I/O multipathing-enabled devices are enumerated under scsi_vhci(7D), providing multipathing capabilities. Solaris I/O multipathing-disabled devices are enumerated under the physical controller. In the /dev and /devices trees, Solaris I/O multipathing-enabled devices receive new names that indicate that they are under Solaris I/O multipathing control. This means a device will have a different name from its original name (after enabling) when it is under Solaris I/O multipathing control. The stmsboot command automatically updates /etc/vfstab and dump configuration to reflect the device names changes when enabling or disabling Solaris I/O multipathing. One reboot is required for changes to take effect.