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Manual Chapter: Disk Management for vCMP Application Volumes
Manual Chapter
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Overview

You can view a vCMP™ application volume on the system, control the amount of physical disk space that the BIG-IP® system allocates to a vCMP volume, or delete a vCMP volume. The BIG-IP system creates a vCMP application volume when you initially provision the vCMP feature.

The way that you control the amount of disk space that the BIG-IP system allocates to a vCMP application volume is by using the Disk Management screens of the BIG-IP Configuration utility. More specifically, the Disk Management screens allow you to reserve an amount of disk space for other uses so that the system does not allocate all available disk resources to the vCMP application volume.

Important: When you provision the vCMP feature, the BIG-IP system allocates most, but not all, of the disk space to the vCMP application volume. The system reserves approximately 1 GB of disk space for other uses. If you want the system to reserve more than 1 GB of disk space, such as for installing another version of the BIG-IP system in the future, you should do this prior to provisioning the vCMP feature. Doing so after you have provisioned the vCMP feature can produce unwanted results. When increasing the reserve space on the disk, the recommended amount of space to reserve is 8 GB per BIG-IP installation.

Viewing disk space allocation for a vCMP application volume

Using this procedure, you can view the amount of disk space, in megabytes, that the system has allocated to a vCMP application volume.
  1. Using the BIG-IP system's management IP address, log in to the BIG-IP Configuration utility.
  2. On the Main tab, click System > Disk Management. This shows the logical disks and application volumes from the perspective of the primary slot of the BIG-IP system cluster.
  3. Click the logical disk for which you want to reserve disk space. An example of a logical disk is HD1.
  4. On the menu bar, click Image List if displayed. This shows a list of the installed images on the system.
  5. If a list of images appears, locate the relevant image, and in the Disk column, click the logical disk name.
  6. In the Contained Application Volumes area of the screen, in the Volume column, locate the vCMP application volume.
  7. In the Size (MB) column, view the size of the application volume, in megabytes.

Managing warnings about disk space thresholds

If the disk space for the host approaches the maximum threshold, the vCMP system displays a warning message about depleted disk space.

Deleting vCMP application volumes

Sometimes, you might need to de-provision the vCMP feature to perform certain disk management tasks. For example, you might want to increase the amount of disk space that the BIG-IP system reserves for non-vCMP uses such as an additional installation location. In this case, you must first de-provision the vCMP feature, and then explicitly delete the vCMP application volume from the system, before increasing the reserve amount. Once you have increased the reserve amount, you can re-provision the vCMP feature, thereby creating a new vCMP application volume.

  1. Using the BIG-IP system's management IP address, log in to the BIG-IP Configuration utility.
  2. On the Main tab, click System > Disk Management. This shows the logical disks and application volumes from the perspective of the primary slot of the BIG-IP system cluster.
  3. Click the logical disk for which you want to reserve disk space. An example of a logical disk is HD1.
  4. On the menu bar, click Image List if displayed. This shows a list of the installed images on the system.
  5. If a list of images appears, locate the relevant image, and in the Disk column, click the logical disk name.
  6. In the Contained Application Volumes area of the screen, in the Volume column, locate the vCMP application volume.
  7. To the left of the application volume name, check the box.
  8. Click Delete.
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