To one master volume, multiple proxy volumes can be related.
For the root class, the number of proxy volumes that can be related to one master volume is up to two.
For the local and shared classes, the number of proxy volumes that can be related is limited to meet the following conditions:
The total number of slices composing one master volume and slices composing any proxy volumes that are related to the master volume cannot exceed 32.
For example, if all master and proxy volumes consist of single volumes, a maximum of 31 proxy volumes can be related to one master volume.
