Application restrictions of OceanStor 9000 InfoTier

Application restrictions of OceanStor 9000 InfoTier include:
- A node cannot be directly migrated from one node pool to another. If you want to change the node pool of a node, delete the node from its original node pool, and then add the node to another node pool by expansion.
- A node pool belongs to one storage tier. The system creates a default storage tier for a new node pool, and you can use DeviceManager to affiliate this pool to another storage tier.
- You cannot delete a node pool containing nodes or a storage tier containing node pools. If you want to delete the node pool or storage tier, you must empty it first.
- Popularity statistics are performed based on files.
- During restriping or file MIGRATE, ensure that data reliability is not impaired and the redundancy ratio remains unchanged.

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