What is the incorrect description of the features of Huawei 0 ceanstor 9000lnfoTier and related...

The node types in the node pool do not have to be the same

The number of nodes in the node pool is limited, including at least 3 nodes and at most 20 nodes

The hard disks of all nodes in the node pool are of the same type

InfoTier features correspond to different file pool strategies through different levels