After performing "4.8 Disk Setting for Performing Mirroring among Servers", describe the physical disk where the mirroring among servers is performed to the Excluded Device List /etc/opt/FJSVsdx/lib/exdevtab.
The configuration example in "Figure 4.1 Disk setting for Performing Mirroring among Servers" shows that the physical disk sdc is described in the Excluded Device List.
When performing mirroring per partition, describe the disk where the target partition exists in the Excluded Device List.