What Are the Restrictions on Attaching an EVS Disk to an ECS?

The EVS disk and the target ECS must be located in the same AZ.
For a non-shared disk, the EVS disk must be in Available state.
For a shared disk, the target EVS disk must be in In-use or Available state.
The target ECS must be in Running or Stopped state.
A frozen EVS disk cannot be attached to an ECS.
A SCSI EVS disk cannot be used as an ECS system disk.
Certain ECSs support SCSI EVS disk attachment. For details, see Which ECSs Can Be Attached with SCSI EVS Disks?
For yearly/monthly ECSs:
If you detach the system disk purchased when creating an ECS and want to continue using it as a system disk, you can only attach it to the original ECS. If you want to use it as a data disk, you can attach it to any ECS.

If you detach the non-shared data disk purchased when you create an ECS and want to attach it again, you can only attach it to the original ECS as a data disk.

Parent topic: Disk Attachment

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