Help Center/ Elastic Volume Service/ FAQs/ Attachment/ Can I Change the Function of a System Disk or Data Disk Purchased Along with a Server?
Updated on 2026-05-26 GMT+08:00

Can I Change the Function of a System Disk or Data Disk Purchased Along with a Server?

This section describes how to change the function of a disk on the original server. To change the function of a disk and use it on a different server, see Can I Switch Between System Disks and Data Disks?

  • System disk purchased along with a server: You can detach the system disk and then re-attach it to the same server as a system disk or data disk.

    Each server can only have one system disk. If a system disk is already attached to the server, the detached disk cannot be attached as a second system disk.

  • Data disk purchased along with a server: You can detach the data disk and then re-attach it to the same server only as a data disk. It cannot be attached as a system disk.