Which of the following features is not supported by Huawei FusionCompute when using raw device mapping type data storage?

Huawei FusionCompute is a cloud computing technology that provides virtualization capabilities including features such as storage management, resource allocation, and system performance monitoring. When using raw device mapping (RDM) for data storage, certain functionalities are limited due to the nature of how RDM interacts with the underlying storage devices.

Snapshot capability is particularly impacted because RDM is designed to map a physical disk directly to a virtual machine (VM). This means that the VM is using the physical device as-is, without the layer of abstraction that would allow for a snapshot to be taken effectively. Snapshots require the virtualization layer to be able to capture the state of the virtual machine, and with RDM, this direct mapping does not facilitate the same level of flexibility for capturing the disk state that would be available with virtual disks.

Conversely, other features such as CPU Hot Add, storage thin provisioning, and storage live migration generally do not rely on the same level of virtualization abstraction as snapshots do and can function effectively even in an RDM context. CPU Hot Add is related to adding CPU resources without downtime; storage thin provisioning allows storage resources to be allocated dynamically; and storage live migration involves moving storage from one location to another without interrupting access, all of which can be supported in various