Reclamation

Use the reclamation overview page to view information about reclaimable capacity in your storage devices added to IBM Storage Insights. You can see the savings that can be made by reclaiming capacity for tiered and non-tiered storage and a list of the reclaimable volumes. You can also exclude volumes from the analysis for reclamation recommendations.

On the Reclamation > View by Reclaimable Capacity page, the overview information for reclamation is shown in the following format:

Reclamation donut chart

Blue area of the donut chart: Represents the amount of storage space that is used.
Green area of the donut chart: Represents the amount of storage space that can be reclaimed.
Center of the donut chart: Provides a rounded estimate of the storage space that can be saved when the volumes that are listed in the table are reclaimed.

Reclamation by tier bar charts

Shows the amount of storage space that can be reclaimed on each tier of storage that is defined in your data center. If you did not define tiers or if some of the storage in your data center is not tiered, a separate column shows the amount of storage space that can be reclaimed for the non-tiered storage in your data center.

Show the data: To see the amount of storage that can be saved, hover the mouse pointer over the column for the tier.

Recommendations tab

View the volumes that are identified as potential candidates for reclamation.

Tip: You can select a volume or multiple volumes for exclusion from the analysis for reclamation recommendations. To exclude a volume from the analysis, right-click the volume and select Exclude from Analysis. The volume is removed from the Recommendations table and added to the Excluded table, and the charts are refreshed.

Information about reclaimable volumes

The following information is provided about each volume that is identified as a potential candidate for reclamation:

Restriction: Definitions are provided only for column headings that might require more information to understand the values that are shown in the table.

Applications: If the volume is added to an application, the name of the application is shown. If the volume is added to an application and its subcomponent, a number is shown. You can click the name or the number to view detailed information about the application.
Available Capacity (GiB): (Previously known as Unallocated Space) The total amount of remaining space that can be used by the volume. That is, the capacity that is not used by thin-provisioned volumes. This value is determined by the formula, Capacity - Used Capacity.
For IBM FlashSystem A9000, IBM FlashSystem A9000R, and Volumes from SpecV Data Reduction Pools, this value is not available.
Capacity (GiB): The total amount of storage space that is committed to a volume. For thin-provisioned volumes, this value represents the provisioned capacity of the volume.; Availability: All storage systems.
Hosts: The name of the host to which a volume is assigned.
Tier: The tier level of the pool in which the volume is located. If the tier level was not defined for the pool in the data center, no value is shown.
Time of Last IO: The number of days, weeks, or months when the value for the I/O rate of the volume was detected. The I/O rate is one of the determining factors for identifying the volumes that are candidates for reclamation.
Used Capacity (GiB): (Previously known as Used Pool Space) The amount of usable capacity that is taken up by data in a storage system, after data reduction techniques have been applied.

Excluded tab

View the volumes that are excluded from the analysis for reclamation recommendations.

Tip: You can select a volume or multiple volumes for inclusion in the analysis for reclamation recommendations. To include a volume in the analysis, right-click the volume and select Include in Analysis. The volume is removed from the Excluded table and added to the Recommendations table, and the charts are refreshed.