Expansion Scenarios

Last Updated At: 2025-10-21 09:10:00

The Expansion Type Is the Cloud Disk of the System Disk

When expanding a cloud disk of the system disk type, you can expand it using the following three methods.

The Expansion Type Is the Cloud Disk of the Data Disk

When expanding a cloud disk of the data disk type, you can expand it using the following three methods.

Depending on the "detachable" attribute of the CBS data disk, you can select different operation entries to expand the data disk.

  • If the current CBS data disk can be unmounted, you can expand the capacity in the CBS console or by using ResizeDisk.
  • If the current CBS data disk cannot be unmounted, you can expand the capacity in the CVM console or by using ResizeDisk.

Note:

If the maximum capacity of a cloud disk still cannot meet your business needs, you can use multiple elastic cloud disks to build an LVM logical volume.

After the data disk is scaled out, you need to perform subsequent operations before identifying and using instances:

Before Expansion Subsequent Operations After Expansion
File system not created - Disk capacity less than 2 TB: Initialize cloud disks (< 2 TB).
- Disk capacity greater than or equal to 2 TB: Initialize cloud disks (≥ 2 TB).
File system created - Disk capacity < 2 TB:
- The scaled-out disk is the cloud disk of Windows CVM: Scale out the partition and file system (Windows).
- The scaled-out disk is the cloud disk of Linux CVM: Scale out the partition and file system (Linux).
- Disk capacity ≥ 2 TB:
- GPT partition format: Expand partitions and file systems (Windows) or Expand partitions and file systems (Linux).
- MBR partition format: Not supported.
MBR partition format supports a maximum disk capacity of 2TB. If your disk partition is in MBR format and its capacity needs to be expanded beyond 2TB, we recommend you create and mount a new data disk, and use GPT partition format to copy the data to the new disk.