HP StoreVirtual 4000 Storage - Manual (Page 153)

Table 45 Information on the Use Summary tab (continued)
Description Category
snapshots are created, or as thinly provisioned volumes
grow.
Saved Space
The space saved by thin provisioning volumes. This space
is calculated by the system. Thin Provisioning
Space saved by using SmartClone volumes is calculated
using the amount of data in the clone point and any SmartClone Feature
snapshots below the clone point. Only as data is added
to an individual SmartClone volume does it consume space
on the SAN.
Approximate total amount of space saved by using thin
provisioning and SmartClone volumes. Total
Graph information
Amount of space allocated for volumes and snapshots. Provisioned
Amount of space remaining in the cluster that has not been
allocated for storage. This value decreases as volumes and Available
snapshots are created, or as thinly provisioned volumes
grow.
Combined space available in the cluster for storage
volumes and snapshots. Total
This graph appears only if the cluster is over-provisioned.
It displays the total space that volumes and snapshots can Provisionable
grow to fill, and this value can exceed the physical capacity
of the SAN. As an over-provisioned cluster approaches the
physical capacity of the SAN, a series of warnings displays
on the Use Summary window.
Volume use summary
The Volume Use window presents detailed information about the volume characteristics that affect
the utilization of the cluster.
Table 46 Information on the Volume Use tab
Description Category
Name of the volume or snapshot. Name
The level of data protection configured for the volume.
Snapshots inherit the data protection level of the parent
volume. Data Protection Level
Volumes can be either full or thin provisioned. The
Provisioning column also details space saving options for Provisioning
the different types of volumes you can create on the SAN,
as shown in
Figure 69 (page 154) . The space calculations
take into account both the type of volume and the data
protection level. Use this information to help you manage
space use on the SAN.
•
Thin provisioning saves space on the SAN by only
allocating a fraction of the configured volume size.
Therefore, the space saved on the SAN is reflected in
this column. As data is added to the volume, thin
provisioning grows the allocated space. You can expect
Ongoing capacity management 153