In a multipath I/O environment, there are multiple paths to any single hard disk. If your computer has multipath capability, use the sdipath(1M) command to manage multipath I/O. The sdipath command provides the ability to list paths including status and performance information, and provides operations for controlling which paths are active so you can tune your system for better performance or higher availability. You can also repair paths that have failed.
In a multipath I/O environment, the name for a disk device is determined
by the first path discovered to the disk.
Ghost names are provided to avoid the naming conflicts
encountered when controllers fail in a multipath I/O environment--the
operating system continues to use the original device name even
when a device is no longer accessible (or has a different first path).
You can run
to change all ghost name references to be real names.