Can I Switch Between System Disks and Data Disks?
Whether you can switch between system and data disks depends on the disk billing mode.
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.
Pay-per-Use 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 |
√ |
Data disk |
√ |
||
Attach to another server |
System disk |
√ |
|
Data disk |
√ |
||
Data disk |
Attach to the same server |
System disk |
× |
Data disk |
√ |
||
Attach to another server |
System disk |
× |
|
Data disk |
√ |
Yearly/Monthly Disks
- Yearly/monthly EVS disks purchased along with yearly/monthly servers belong to the same order and they have attachment relationships. After such EVS disks are detached, they cannot be re-attached to other servers.
- You can detach a system disk and then re-attach it to the same server as a system disk or data disk.
- You can detach a data disk and then re-attach it to the same server as a data disk.
- Yearly/monthly EVS disks that are separately purchased can serve as data disks only. You can detach such a disk and then re-attach it to the same server or other servers as a data disk.
Attachment FAQs
- Why Can't I View the Attached Data Disk on the Server?
- Why Can't I Attach My Disk to a Server?
- Can I Attach a Disk to Multiple Servers?
- Can I Attach a Disk to a Server in Another AZ?
- How Can I Add a Data Disk to an Existing Server?
- Can I Attach a Yearly/Monthly Disk to Another Server?
- Can I Attach Different Types of Disks to the Same Server?
- Can I Switch Between System Disks and Data Disks?
- What Should I Do If a Linux EVS Disk Is Attached to a Windows Server?
- Can I Attach an EVS Disk Purchased with a Yearly/Monthly Server to Another Yearly/Monthly Server?
- Can I Change the Function of a System Disk or Data Disk Purchased Along with a Server?
- How Do I Obtain My Disk Device Name in the ECS OS Using the Device Identifier Provided on the Console?
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