Help

Expanding volumes
You can non-disruptively increase the capacity of a virtual volume by selecting a storage volume with available capacity and
specifying whether to use all or a portion of the capacity. metro node automatically creates an extent based on the specified
capacity. To expand a volume using existing extents or devices, use the CLI. The CLI Guide for metro node provides more
information.
Consistency groups
Consistency groups allow you to group volumes together and apply a set of properties to all the volumes in the group.
Consistency groups ensure consistent behavior among the volumes in the group, and eliminates setting specific values to each
virtual volume individually. About consistency groups provides detailed information about consistency groups and how they are
used.
Monitoring volume performance
The Virtual Volumes Dashboard shows performance metrics of the top 100 busiest volumes, ranked by total IOPS. Use this data
to monitor virtual volume performance or investigate poor volume performance. Refer to Virtual Volumes Dashboard for more
information.
Configuration limits for volumes
The Release Notes for metro node for this release provide information on configuration limits when creating virtual volumes.
The Virtual Volumes view
The Virtual Volumes view shows all the virtual volumes in the selected cluster. Use this view to quickly see the status of
a virtual volume, or the supporting device for a virtual volume. By default, virtual volumes are sorted by name in ascending
alphabetical order. The arrow in the default sort column indicates the direction of the sort; ascending (
) or descending ( ).
You can sort columns of data, select one or more objects in the list, and show or hide on the screen.
NOTE: You cannot sort on the Visibility column.
This screen also shows the following information about virtual volumes. To see additional properties, click the virtual volume
name link to open the properties dialog box.
Name
Definition
Virtual Volume The name of the virtual volume.
Capacity The size of the virtual volume.
Health The overall health of the virtual volume. Virtual volume status provides more information.
Operational Status Indicates how the virtual volume is functioning in the cluster. Virtual volume status status
provides more information.
Service Status Indicates how the virtual volume is functioning in the cluster. Virtual volume status
provides more information.
Locality The location of the supporting device. Possible values: Local, Remote, or
Distributed.
Visibility Indicates where a virtual volume is visible: Global (both clusters) or Local (only at this
cluster).
Thin Enabled Indicates if the virtual volume is created as a thin volume. Possible values:
● Enabled — The volume was created as a thin volume.
● Disabled — The volume was not created as a thin volume although the underlying
storage is thin-capable.
● Unavailable — The underlying storage is not thin-capable.
86 Provisioning storage