Share Usage Statistics
On the left side of the view (beneath the project panel when collapsed) is a table
explaining the current space usage statistics. These statistics are either for a particular
share (when editing a share) or for the pool as a whole (when looking at the list of shares).
If any properties are zero, then they are excluded from the table.
Some of the usage statistics are also displayed in the CLI context shares
show.
The following table describes the BUI and CLI usage properties.
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Available space
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This statistic is implicitly shown as the capacity in terms of capacity
percentage in the title. The available space reflects any quotas on the share or
project, or the absolute capacity of the pool. The number shown here is the sum of
the total space used and the amount of available space.
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Referenced data
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usage_data
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The amount of data referenced by the data. This includes all filesystem data or
LUN blocks, in addition to requisite metadata. With compression, this value may be
much less than the logical size of the data contained within the share. If the share
is a clone of a snapshot, this value may be less than the physical storage it could
theoretically include, and may be zero.
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Snapshot data
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usage_snapshots
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The amount of space used by all snapshots of the share, including any project
snapshots. This size is not equal to the sum of unique space consumed by all
snapshots. Blocks that are referenced by multiple snapshots are not included in the
per-snapshot usage statistics, but will show up in the share's snapshot data
total.
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Unused reservation
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If a filesystem has a reservation set, this value indicates the amount of
remaining space that is reserved for the filesystem. This value is not set for LUNs.
The appliance prevents other shares from consuming this space, guaranteeing the
filesystem enough space. If the reservation does not include snapshots, then there
must be enough space when taking a snapshot for the entire snapshot to be
overwritten. For more information on reservations, see Filesystem Properties. |
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Total space
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usage_total
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The sum of referenced data, snapshot data, and unused reservation.
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