4.5. Data Centers and Storage Domains

4.5.1. Attaching an Existing Data Domain to a Data Center

Data domains that are Unattached can be attached to a data center. Shared storage domains of multiple types (iSCSI, NFS, FC, POSIX, and Gluster) can be added to the same data center.

Attaching an Existing Data Domain to a Data Center

  1. Click ComputeData Centers.
  2. Click a data center’s name to open the details view.
  3. Click the Storage tab to list the storage domains already attached to the data center.
  4. Click Attach Data.
  5. Select the check box for the data domain to attach to the data center. You can select multiple check boxes to attach multiple data domains.
  6. Click OK.

The data domain is attached to the data center and is automatically activated.

4.5.2. Attaching an Existing ISO domain to a Data Center

An ISO domain that is Unattached can be attached to a data center. The ISO domain must be of the same Storage Type as the data center.

Only one ISO domain can be attached to a data center.

Attaching an Existing ISO Domain to a Data Center

  1. Click ComputeData Centers.
  2. Click a data center’s name to open the details view.
  3. Click the Storage tab to list the storage domains already attached to the data center.
  4. Click Attach ISO.
  5. Click the radio button for the appropriate ISO domain.
  6. Click OK.

The ISO domain is attached to the data center and is automatically activated.

4.5.3. Attaching an Existing Export Domain to a Data Center

Note

The export storage domain is deprecated. Storage data domains can be unattached from a data center and imported to another data center in the same environment, or in a different environment. Virtual machines, floating virtual disks, and templates can then be uploaded from the imported storage domain to the attached data center. See Section 8.7, “Importing Existing Storage Domains” for information on importing storage domains.

An export domain that is Unattached can be attached to a data center. Only one export domain can be attached to a data center.

Attaching an Existing Export Domain to a Data Center

  1. Click ComputeData Centers.
  2. Click a data center’s name to open the details view.
  3. Click the Storage tab to list the storage domains already attached to the data center.
  4. Click Attach Export.
  5. Click the radio button for the appropriate export domain.
  6. Click OK.

The export domain is attached to the data center and is automatically activated.

4.5.4. Detaching a Storage Domain from a Data Center

Detaching a storage domain from a data center stops the data center from associating with that storage domain. The storage domain is not removed from the Red Hat Virtualization environment; it can be attached to another data center.

Data, such as virtual machines and templates, remains attached to the storage domain.

Note

The master storage, if it is the last available storage domain, cannot be removed.

Detaching a Storage Domain from a Data Center

  1. Click ComputeData Centers.
  2. Click a data center’s name to open the details view.
  3. Click the Storage tab to list the storage domains attached to the data center.
  4. Select the storage domain to detach. If the storage domain is Active, click Maintenance.
  5. Click OK to initiate maintenance mode.
  6. Click Detach.
  7. Click OK.

It can take up to several minutes for the storage domain to disappear from the details view.