Dashboard

The Dashboard on the management GUI 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.

The performance graph is updated with new data every 5 seconds. Select any of the available metrics to change what is displayed by the graph. To view a metric not available on the Dashboard, go to the Performance page in the navigation.

Capacity

The Capacity section on the Dashboard provides an overall view of system capacity. There are two types of view for the Capacity section, one view for FCM based systems and another for non FCM based systems. The following section displays for non FCM based systems:

Usable Capacity

Usable capacity indicates the total capacity in all storage on the system. Usable capacity includes all the storage the system can be virtualized and assigned to pools. Usable capacity is displayed in a donut graph and is divided into three categories: Used Capacity, Available Capacity, and Total Capacity. If the system supports self-compressing drives, certain system configurations make determining accurate usable capacity on the system difficult. For example, if the system contains self-compressed drives and data reduction pools without compression enabled, the system cannot determine the accurate amount of usable capacity that is used on the system. In this case, overprovisioning and losing access to write operations is possible. If this condition is detected by the system, the Usable Capacity section of the Dashboard page displays a message instead of capacity information. To recover from this condition, you need to ensure that all thin-provisioned volumes and thin-provisioned volumes that are deduplicated are migrated to volumes with compression enabled in the data reduction pools. Alternatively, you can migrate the volumes to standard-provisioned volumes and use the drive compression to save capacity.

Used Capacity: Used Capacity indicates the amount of capacity that is 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.
Available Capacity: Available capacity is calculated by adding the available 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.
Total Capacity: The Total Capacity shows all the capacity available on the system. Select MDisks to view more information about the usable capacity of the system on the MDisks by Pools page.; If the system supports self-compressing drives, certain system configurations make determining accurate usable capacity on the system difficult.

Capacity Savings

Capacity Savings indicates the amount of capacity that is saved on the system by using data reduction, thin-provisioning, and total savings. The value for each of these capacity savings methods compares the stored capacity before capacity savings is applied to the stored capacity after capacity savings is applied. Data reduction shows the physical capacity not consumed by written capacity due to savings from compression and deduplication. Thin-provisioning displays the total capacity savings for all thin-provisioned volumes on the system. Total savings indicates the total capacity savings that the system has saved from thin-provisioning and data reduction. You can view all the volumes that use each of these technologies. These requirements can include additional hardware, licenses, or both to use these functions. Verify all system requirements before using these functions. The system supports several compression technologies, such as data reduction pool and self-compressing drives, where data is compressed in the hardware as it is written to a drive. A single capacity savings value for systems that use multiple compression technologies cannot be determined.

The following section displays for FCM based systems:

Physical Capacity

Physical capacity indicates the total capacity in all storage on the system. Physical capacity includes all the storage the system manages and can be assigned to pools. Physical capacity is displayed in a meter chart and available in percentage and number (for example GiB, TiB). The capacity number for physical used and physical available displays in this section.

Logical Capacity

Logical capacity indicates the total amount of storage that the system perceives as available or used for storing data, including all optimizations such as deduplication, compression, and thin provisioning. Logical capacity is displayed in a meter chart and available in percentage and number (for example GiB, TiB). The capacity number for logical used and logical available displays in this section.

Carousel

This section is a carousel with 3 capacities:

Capacity Savings: Capacity Savings indicates the amount of capacity that is saved on the system by using data reduction, thin-provisioning, and total savings. The percentage value for each of these capacity savings methods compares the stored capacity before capacity savings is applied to the stored capacity after capacity savings is applied. Data reduction shows the physical capacity not consumed by written capacity due to savings from compression and deduplication. Thin-provisioning displays the total capacity savings for all thin-provisioned volumes on the system. Total savings indicates the total capacity savings that the system has saved from thin-provisioning and data reduction.
Logical used capacity breakdown: Logical used capacity breakdown indicates analysis of how storage is used in a system. Logical used capacity breakdown is displayed in a meter chart and available in percentage and number (for example GiB, TiB). The capacity number for written by hosts, written by snapshots, and logical reserved is displayed in this section.
Provisioned Capacity: Provisioned capacity is the total capacity of all virtualized storage on the system that has been dedicated for use by volumes. Provisioned capacity is displayed in a meter chart and available in percentage and number (for example GiB, TiB). The capacity number for logical used, logical total, and provisioned capacity displays in this section.

System Health

The System Health section on the Dashboard provides a holistic view of the system through tiles of data that represent 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.

System Health tiles

The tiles of data in the System Health section of the Dashboard represent different components that make up the system, providing a holistic view of the system.

Each tile contains one type of component, but it can contain multiple items of the same type. For example, a Fibre Channel port is a component, so it is contained in a tile, but the Fibre Channel tile can contain multiple Fibre Channel ports. Tiles with errors and warnings are displayed first so that components that require attention have higher visibility. Healthy tiles are sorted in order of importance in day-to-day use.

The following list defines the categories of tiles:

Hardware components display the health of all components that are specific to the physical hardware.
Logical components display the health of all logical and virtual components in the management GUI.
Connectivity components display the health of all components that are related to the system’s connectivity and the relationship between other components or systems.
Note: The Configured status of IBM Storage Insights in the Connectivity components section indicates that the storage system is registered with IBM Storage Insights and the Call Home field shows the last time when your storage system was synced with IBM Storage Insights.