Expanding Partitions and File Systems (Windows)

Scenarios

After the cloud disk capacity is expanded, you need to allocate the expanded capacity to an existing partition or format the expanded capacity into a new independent partition.

• If you have performed a hard disk expansion operation while the cloud disk is connected to a CVM and the CVM is running normally, you need to first execute the Rescan Disk operation to identify the expanded hard disk space.
• If you scale out a hard disk when the hard disk is ready to mount or mounted but the server has been shut down, the space of the scaled-out hard disk will be automatically identified.

Prerequisites

Note:

• Inadvertently scaling-out the file system may affect existing data, so it is strongly recommended that you manually create a snapshot to backup data before operation.
• Scaling out the file system requires restarting instances or rescanning disks, which will cause service interruption for a certain period. You are advised to choose the appropriate time with caution.

• The cloud disk capacity has been expanded.
• The cloud disk has been attached to a Windows CVM, and a file system has been created.
• You have logged in to the Windows CVM of the partition and file system to be scaled out.

Operation Steps

Note:

• If the CVM to which the disk is attached is running normally during cloud disk expansion, you need to rescan the disk to recognize the expanded cloud disk space before extending the volume.
• If the disk is in the state of To Be Mounted or the CVM to which the disk is attached is shut down during cloud disk expansion, you can directly extend the volume.
• This document takes the Windows Server 2008 operating system as an example. Different operating systems may have different formatting operations, so this document is for reference only.

(Optional) Rescan the Disk

1. Open Computer Management.
2. In the left sidebar, choose Storage > Disk Management.
3. Right-click Disk Management, and select Rescan Disks.
4. After the scan is complete, check whether the size of the data disk has changed to the scaled-out size.

Scaling out Volume

1. Right-click any blank area in the disk space and select Expand Volume.
2. Complete volume scaling-out operations according to the guidance of the Scale-out Volume. After that, the new data disk space will be merged into the original volume.