Edit or add hard disks to a VM#

If your VM is running out of disk space, you can increase the storage capacity of existing hard disks, or you can add hard disks to your VM.

The following limitations apply to editing or adding hard disks to a VM:

  • If the VM has an active snapshot, you cannot edit the size of existing hard disks.

  • You can only increase and not decrease the size of existing hard disks.

  • You cannot modify some hard disk properties when you have the VM powered on.

Before you begin#

Before you begin, ensure that you:

  • Power off the VM, depending on what you are changing. Hard disk expansions do not typically require you to power off the VM.

  • Determine what you want to change about the hard disk, including its size and storage policy.

How to get started#

Complete the following steps to start creating a VM from a template:

  1. Log in to the Rackspace Services for VMware Cloud portal.

  2. Click Data Centers and select the VDC that contains the VM you want to edit.

  3. From the Compute drop-down menu, click Virtual Machines and then click the VM you want to edit.

  4. Click Hardware > Hard Disks > Edit.

Best practice guidelines#

Consider the following guidelines when you edit or add hard disks to a VM:

Field name

Guideline

Size

If the OS indicates that the VM is running low on free space, you might need to increase the size of a hard disk.

Important: This change has pay-as-you-go billing implications.

Policy

You can change the storage policy for the vDisk. This might have performance and pay-as-you-go billing implications.

Bus number

Leave the default setting.

Unit number

Leave the default setting.