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Add Capacity to
Virtual Volume
The selected virtual volume that you want to expand.
Current Capacity The size of the selected virtual volume.
Additional
Capacity Needed
Enter the amount of space to add to this virtual volume. Metro node will look for volumes with at
least that available capacity. To enter the value using a different unit, select the correct unit from the
drop-down list. When you enter the amount of space needed, you can click Show Available to list the
storage volumes with a minimum capacity equal to the additional capacity needed. If you change the
capacity needed, click Show Available again to update Available Storage Volumes list.
Total New
Capacity
The new size of the virtual volume based on the additional capacity needed.
Available storage
volumes
The list of available storage volumes to choose from based on the additional capacity needed. The name
of the storage volume and the largest free chunk available in the storage volume are displayed.
Storage views
About storage views
A storage view defines which hosts access which virtual volumes on which metro node ports. It consists of the following
components:
● Registered initiators (hosts) to access the storage
● metro node ports (front-end) to export the storage
● One or more virtual volumes to export (with their respective LUN numbers)
Typically, one storage view is created for all hosts that require access to the same storage. The process of exporting storage
requires the following steps:
1. Create a storage view
2. Add registered initiators
3. Add metro node ports
4. Add virtual volumes
Initiators
For an initiator (host) to see the virtual volumes in a storage view, it must be registered and included in the storage view’s
registered initiator list. The initiator must also be able to communicate with the front-end ports over Fibre Channel connections
—either through a direct connection or through a fabric.
Metro node ports
Typically, a storage view has one metro node port assigned to it from each director in the cluster to provide maximum
redundancy. When volumes are added to a storage view, they are exported on all metro node ports in the view, using the same
LUN numbers.
Virtual volumes
The virtual volumes added to a storage view can be created on devices, distributed devices, or can be a member of a
consistency group. The Virtual Volumes view contains a list of all volumes in the cluster, including the volume's Service status,
which indicates whether or not the virtual volume is exported to a host.
Storage view status
Until all three components (registered initiators, metro node ports, and virtual volumes) are added to a storage view, the view
is Inactive. When all three components are added to a storage view, it automatically becomes active, and hosts can access the
virtual volumes in the storage view.
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Exporting storage