A shared Elastic Volume Service (EVS) disk can be attached to multiple servers at the...

The statement is TRUE . Huawei Cloud distinguishes ordinary EVS disks from shared EVS disks . A standard non-shared EVS disk can normally be attached to only one server at a time, whereas a shared disk is specifically designed so that multiple supported servers can access the same block-storage device. Huawei documentation states that a shared EVS disk can be attached to multiple servers simultaneously, with supported implementations allowing attachment to as many as 16 servers.

The deletion requirement is equally explicit. A shared EVS disk cannot remain attached to any server when the disk itself is being deleted. Huawei requires administrators to detach the shared disk from all servers before deletion . If the disk is attached to several servers and is detached from only some of them, it remains in the In-use state. Only after it has been detached from every server does its state return to Available, permitting subsequent deletion operations.

Huawei additionally cautions that shared block storage does not itself provide cluster coordination. Appropriate cluster software or shared-file-system mechanisms must manage simultaneous reads and writes to prevent corruption.

Thus, both parts of the question precisely reflect Huawei Cloud's EVS shared-disk lifecycle requirements.

Reference topics: Shared EVS Disks; Attaching Shared Disks; Detaching EVS Disks; EVS Lifecycle Management.

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