Help Center/ Elastic Volume Service/ FAQs/ Attachment/ Can I Switch Between System Disks and Data Disks?

Updated on 2023-08-04 GMT+08:00

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Can I Switch Between System Disks and Data Disks?

If you detach a system disk and then attach it to an ECS as a data disk, the maximum capacity of this disk is still 1 TiB.

**Table 1** Detaching and reattaching of pay-per-use EVS disks
Original Use	Target Server	New Use	Supported
System disk (It becomes a bootable disk after being detached.)	Attach to the same server	System disk	√
	Attach to the same server	Data disk	√
	Attach to another server	System disk	√
	Attach to another server	Data disk	√
Data disk	Attach to the same server	System disk	×
	Attach to the same server	Data disk	√
	Attach to another server	System disk	×
	Attach to another server	Data disk	√

Parent topic: Attachment

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