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Manual Chapter: Working with vCMP Virtual Disks
Manual Chapter
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Overview: Managing virtual disks

With vCMP® initial setup successfully completed to process application traffic, you will likely want to manage the configuration of your vCMP virtual disks to optimize performance.

Detaching virtual disks from a vCMP guest

Before you can detach a virtual disk from a guest, you must change the Requested State property on the guest to Configured.
You can detach a virtual disk from the guest, but retain the virtual disk on the BIG-IP® system so that you can attach it to another guest later. To detach a virtual disk from a vCMP® guest, you modify the guest's properties by setting the Virtual Disk property to None.
Attention: Unattached virtual disks consume disk space on the system. To prevent unattached virtual disks from depleting available disk space, routinely monitor the number of unattached virtual disks that exist on the system.
  1. On the Main tab, click vCMP > Guest List.
  2. In the Name column, click the name of the vCMP guest that you want to view.
  3. From the Virtual Disk list, select the default value, None.
  4. Click Update.
    Important: Depending on the extent of the changes made to the vCMP guest, the guest may reboot.
The vCMP guest no longer has any virtual disk attached to it.

Viewing virtual disks not attached to a vCMP guest

You can view virtual disks that are not attached to a vCMP® guest, so you can monitor virtual disks that may be unused, but still consuming disk space.
  1. On the Main tab, click vCMP > Virtual Disk List.
  2. Locate the Virtual Disk List area of the screen.
  3. To the right of the list of virtual disk names, note any disks that do not have any guest names associated with them. These disks are unattached.

Attaching a detached virtual disk to a vCMP guest

Before you begin this task, ensure that:
  • The guest to which you are attaching the virtual disk is in the Configured state.
  • The virtual disk cannot currently be attached to another guest.

It is possible for a virtual disk to become detached from a vCMP™ guest. A disk that is no longer attached to a guest is known as an unattached virtual disk.

You can attach an unattached virtual disk to another guest either when you create the guest or when you modify the Virtual Disk property of a guest.

  1. On the Main tab, click vCMP > Guest List.
  2. In the Name column, click the name of the vCMP guest that you want to view.
  3. From the Properties list, select Advanced.
  4. From the Virtual Disk list, select a file name. The guest uses the newly-selected virtual disk when being deployed.
  5. Click Update.
    Important: Depending on the extent of the changes made to the vCMP guest, the guest may reboot.

Deleting a virtual disk from the BIG-IP system

Using the BIG-IP® Configuration utility, you can delete a virtual disk from the system. You do this by using the Virtual Disk List screen.

Important: This is the only way to delete a virtual disk from the system. If you delete the associated guest instead, the system retains the virtual disk for re-use by another guest later.
  1. On the Main tab, click vCMP > Virtual Disk List.
  2. Locate the Virtual Disk List area of the screen.
  3. In the Name column, locate the name of the virtual disk that you want to delete.
  4. To the left of the virtual disk name, select the check box.
  5. Click Delete. The system prompts you to confirm the delete action.
  6. Click Delete.
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