The VAST Web UI dashboard offers you a quick and easy way to monitor your VAST Cluster.
The dashboard appears when you log in to the VAST Web UI. To return to it at any time, click the VAST Data logo at the top of the page or select Dashboard from the left navigation menu.
The dashboard features several cards:
Capacity
The Capacity card can display the ratio of physical to logical capacity or ratio of usable to logical capacity. It features the following:
Usable toggle button. Enable Usable to see usable capacity instead of physical capacity. Usable capacity differs from raw physical capacity due to two components: a fixed initial space reservation for background activities and the overhead of parity blocks introduced by each write for data protection. The usable capacity values are adjusted to reflect realistic usable capacity whereas the physical capacity values reflect raw physical capacity. For a more detailed explanation of how usable capacity differs from raw physical capacity, see Understanding VAST Usable Capacity.
The data reduction ratio (DRR), continuously computed as the ratio of all data written by your data clients to the cluster (including snapshots) to the physical capacity in use. This figure reflects the reduction performed by the cluster through compression, de-duplication and such.
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Capacity breakdown bar: reflects at a glance the percentage breakdown of the cluster's logical, physical or usable capacity into:
Used. The amount of data written to the cluster, not including snapshots.
Auxilliary. The amount of data written to the cluster as snapshot data.
Free. The remaining unused capacity of the cluster.
The colors of those components are indicated below the bar (see next item).
This category of metrics toggles between Usable and Physical according to the Usable setting (see item 1 above).
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The detailed breakdown of the cluster capacity:
Physical Used. Physical SSD space being used by primary data and overhead. This does not include snapshots and data pending deletion.
Physical Aux. The amount of physical SSD space in use by snapshots and by any data that may be pending deletion at the current time. This figure usually gives a close indication of snapshot capacity usage. However, at times when a large amount of data was recently deleted, wiping that data from physical storage may taken some time and temporarily enlarge this figure.
Physical Free. Total physical SSD space available.
Usable Used. The amount of usable SSD space in use by primary data. This is similar to the physical used with overhead subtracted.
Usable Aux. The amount of usable physical SSD space in use by snapshots and by any data that may be pending deletion at the current time.
Usable Free. The amount of physical SSD space available for use computed dynamically based on overhead impact.
Logical Used. The amount of logical data written to the cluster by your data clients. This figure doesn't include snapshots.
Logical Aux. The amount of logical data written to the cluster as snapshot data.
Logical Free. The estimated effective free capacity remaining for writing data to the cluster, computed dynamically based upon the observed DRR and overhead impact.
Note
By default, the units of measurement shown on the Dashboard are base10 units. If you prefer, you can switch to base2 units. See Changing Units of Measurement.
Performance
The Performance card dials show frequently updated real time metrics:
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Bandwidth. The rate at which data is transmitted between the client network and VAST Cluster.
Tip
Click the dial to toggle between total bandwidth and a breakdown of read and write bandwidth.
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IOPS. The number of I/O operations performed per second.
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Latency. The average time needed to perform an I/O operation.
Tip
Hover over the dial to display total, read and write latency. Click the dial to toggle between displaying total latency and displaying a breakdown of read and write latency.
Enable the Replication setting to see these metrics for the connection between native replication peers. Disable to see the metrics for client data access.
Inventory
The Inventory card shows the main components of the cluster's hardware inventory and the primary status information.
Click
to open the Maintenance page to drill down to more detail. The Maintenance page opens to the relevant inventory tab.Other refers to components in states other than Active or Failed.
Metric Graph Cards
Each graph displays the levels of selected analyzed metrics as they varied in recent seconds. You can change the combination of metrics displayed on each graph.
To change the metrics displayed on each graph, click
and then select the metrics you want to display.Hover over a point on a graph to see higher precision values.
Tip
To see deeper analytics, use our analytics reports.
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