The mirroring among servers can be performed not only per each disk but also per partition.
For example, when the server has only one internal disk, use it for installing the OS, and make the partition created in a free space as a target of the mirroring among servers.
The disk area already registered to the GDS class and the device whose compatible device name is not sdX or vdX, such as GDS volumes, GDS slices, and LVM logical volumes, cannot be specified as the target of the mirroring among servers.
