Dashboard

The Dashboard provides a way to quickly assess the overall condition of the system and view notifications of any critical issues that require immediate action.

The Dashboard is the home page that displays after you log in to the system. It contains high-level information about the system and is not a replacement for the Performance page or the system view. The Dashboard contains sections for performance, capacity, and system health that provide an overall understanding of what is happening on the system.

Performance

The Performance section on the Dashboard displays a graph with up to 5 minutes of data from the performance of a specific system or a comparison of the performance of the nodes. Select either System or Node Comparison to switch the view between system-level performance and node-level performance.

Capacity

The Capacity section on the Dashboard provides an overall view of system capacity through physical capacity, volume capacity, and capacity savings. The capacity displays as actual capacity and also as a percentage of the total capacity. Dashboard provides the system-level reporting for capacity usage.

Physical Capacity
Physical capacity indicates the total capacity in all storage on the system. Physical capacity includes all the storage the system can virtualize and assign to pools. Physical capacity is displayed in a bar graph and divided into three categories: Stored Capacity, Available Capacity, and Total Physical. Stored Capacity indicates the amount of capacity that is being used on the system after compression, deduplication, and thin-provisioning savings. This value does include the capacity that is used by metadata for deduplicated and compressed volumes. Stored Capacity indicates the amount of capacity that is being used on the system after capacity savings. The system calculates the stored capacity by subtracting the available capacity and any reclaimable capacity from the total capacity that is allocated to MDisks. To calculate the percentage, the stored capacity is divided by the total capacity that is allocated to MDisks. On the left side of the bar graph, the stored capacity is displayed in both the total capacity and as a percentage. The total Available Capacity displays on the right side of the bar graph. Available capacity is calculated by adding the free capacity and the total reclaimable capacity. To calculate the percentage of available capacity on the system, the available capacity is divided by the total amount of capacity that is allocated to MDisks. The Total Physical capacity displays on the right under the bar graph and shows all the physical capacity available on the system. The bar graph is a visual representation of capacity usage and availability and can be used to determine whether more storage needs to be added to the system. Select View MDisks to view more information about the physical capacity of the system on the MDisks by Pools page.
If you are using the command-line interface to determine physical capacity usage on your system, several parameter values are used from the lssystem command to calculate stored, available, and total capacities. Stored capacity is calculated with the values in the total_mdisk_capacity, total_free_space, total_reclaimable_capacity by using the following formula:
  • Total stored capacity = total_mdisk_capacity - total_free_space - total_reclaimable_capacity
To calculate the available capacity, use the values in total_free_space and total_reclaimable_capacity in the following formula:
  • Total available capacity = total_free_space + total_reclaimable_capacity
The value in the total_mdisk_capacity in the lssystem command indicates the total physical capacity on the system.
Volume Capacity
Volume capacity is the total capacity of all virtualized storage on the system. Volume capacity is displayed in a bar graph and divided into two categories: Written Capacity and Total Provisioned capacity. Written Capacity displays on the left side of the bar graph and indicates the amount of capacity that has data that is written to all the configured volumes on the system. The system calculates the written capacity for volumes by adding the stored capacity to capacity savings. The percentage of written capacity for volumes is calculated by dividing the written capacity by the total provisioned capacity for volumes on the system. The Available Capacity displays on the right side of the bar graph and indicates the capacity on all configured volumes that is available to write new data. The available capacity is calculated by subtracting the written capacity for volumes from the total amount of capacity that is provisioned for volumes. The percentage of available capacity is calculated by dividing the available capacity for volumes by the total amount of capacity that is provisioned to volumes on the system. The Total Provisioned capacity displays under the Available Capacity and indicates the total amount of capacity that is allocated to volumes. The Volume Capacity also displays the percentage for over-provisioned volumes. The Overprovisioned value indicates the percentage of volume capacity that is increased because of capacity savings.
Capacity Savings
Capacity Savings indicates the amount of capacity that is saved on the system by using compression, deduplication, and thin-provisioning. Compression shows that the total capacity savings gained from using compression for the all compressed volumes on the system. Deduplication indicates the total capacity savings that the system is saved from using deduplication on all deduplicated volumes. Thin-Provisioning displays the total capacity savings for all volumes on the system. You can view all the volumes that use each of these technologies.

System Health

The System Health section on the Dashboard provides a holistic view of the system through tiles of data that represents different components that make up the system. A tile contains one type of component, but it can contain multiple items of the same type.

The current software version number and the system ID are displayed above the Connectivity components category.

Mini-Dashboard

The Mini-Dashboard provides an at-a-glance look at the total, read, and write latency, bandwidth, and IOPS performance metrics for the system. The Mini-Dashboard displays at the bottom of the management GUI after you leave the Dashboard page. The information can be used in the following ways:

Parent topic: Management GUI