NEC Storage M100 Series User Manual page 382

User Guide
In the environment where PathManager is installed, in some cases, depending on the
Linux kernel version, the logical disks that can be controlled by PathManager are
displayed after the logical disks recognized by the OS via the host bus adapter (comprised
in the above example of host bus adapter #1 and host bus adapter #2).
Release 6.0
Appendix E How to Set/Check Application Server (Linux) (FC/SAS)
382