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Monitor space utilization of a FabricPool-enabled ONTAP local tier

Contributors netapp-lenida netapp-dbagwell netapp-bhouser netapp-thomi netapp-aaron-holt netapp-aherbin
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You need to know how much data is stored in the performance and cloud tiers for FabricPool. That information helps you determine whether you need to change the tiering policy of a volume, increase the FabricPool licensed usage limit, or increase the storage space of the cloud tier.

Note Prior to ONTAP 9.7, System Manager uses the term aggregate to describe a local tier. Regardless of your ONTAP version, the ONTAP CLI uses the term aggregate. To learn more about local tiers, see Disks and local tiers.
About this task

Beginning with ONTAP 9.18.1, the storage aggregate show-space command changes how Logical Referenced Capacity and Logical Unreferenced Capacity is reported. Logical Referenced Capacity reports referenced blocks in all objects and unreferenced blocks in fragmented objects. Logical Unreferenced Capacity reports only unreferenced blocks in objects that have crossed the fullness threshold and are eligible for object deletion and defragmentation.

For example, when you use the default aggregate fullness threshold of 40% for ONTAP S3 and StorageGRID, 60% of the blocks in an object must be unreferenced before the blocks are reported as unreferenced capacity.

In releases earlier than ONTAP 9.18.1, Logical Referenced Capacity reports referenced blocks in all objects (both full and fragmented objects). Logical Unreferenced Capacity reports unreferenced blocks in all objects.

Steps

  1. Monitor the space utilization for FabricPool-enabled local tiers by using one of the following commands to display the information:

    If you want to display…​

    Then use this command:

    The used size of the cloud tier in a local tier

    storage aggregate show with the -instance parameter

    Details of space utilization within an local tiers, including the object store's referenced capacity

    storage aggregate show-space with the -instance parameter

    Space utilization of the object stores that are attached to the local tiers, including how much license space is being used

    storage aggregate object-store show-space

    A list of volumes in a local tier and the footprints of their data and metadata

    volume show-footprint

    In addition to using CLI commands, you can use Active IQ Unified Manager (formerly OnCommand Unified Manager), along with FabricPool Advisor, which is supported on ONTAP 9.4 and later clusters, or System Manager to monitor the space utilization.

    The following example shows ways of displaying space utilization and related information for FabricPool:

    cluster1::> storage aggregate show-space -instance

                          Aggregate: MyFabricPool
                                                                   ...
                                               Aggregate Display Name: MyFabricPool
                                                                   ...
                          Total Object Store Logical Referenced Capacity: -
                          Object Store Logical Referenced Capacity Percentage: -
                                                                   ...
                                                       Object Store Size: -
                          Object Store Space Saved by Storage Efficiency: -
                          Object Store Space Saved by Storage Efficiency Percentage: -
                                                 Total Logical Used Size: -
                                                 Logical Used Percentage: -
                                           Logical Unreferenced Capacity: -
                                         Logical Unreferenced Percentage: -
    cluster1::> storage aggregate show -instance

                           Aggregate: MyFabricPool
                           ...
                           Composite: true
                           Capacity Tier Used Size:
                           ...
    cluster1::> volume show-footprint

Vserver : vs1
Volume : rootvol

Feature                          Used       Used%
-------------------------------- ---------- -----
Volume Footprint                 KB          %
Volume Guarantee                 MB          %
Flexible Volume Metadata         KB          %
Delayed Frees                    KB          %
Total Footprint                  MB          %

Vserver : vs1
Volume : vol

Feature                          Used       Used%
-------------------------------- ---------- -----
Volume Footprint                 KB          %
Footprint in Performance Tier    KB          %
Footprint in Amazon01            KB          %
Flexible Volume Metadata         MB          %
Delayed Frees                    KB          %
Total Footprint                  MB          %
...

  2. Take one of the following actions as needed:

    If you want to…​

    Then…​

    Change the tiering policy of a volume

    Follow the procedure in Managing storage tiering by modifying a volume's tiering policy or tiering minimum cooling period.

    Increase the FabricPool licensed usage limit

    Contact your NetApp or partner sales representative.

    NetApp Support

    Increase the storage space of the cloud tier

    Contact the provider of the object store that you use for the cloud tier.
Related information