How does the FabricPool inactive data reporting work?
Applies to
- ONTAP 9.6
- FabricPool
- Inactive Data Reporting (IDR)
Answer
- To verify that IDR is enabled on the aggregates, use the command
storage aggregate show -fields is-inactive-data-reporting-enabled
Example
cluster1::> storage aggregate show -fields is-inactive-data-reporting-enabled aggregate is-inactive-data-reporting-enabled ----------------- ---------------------------------- aggr0_cluster1_01 false aggr0_cluster1_02 false cluster1_01_SSD_1 false cluster1_02_SSD_1 false 4 entries were displayed.
- If IDR is not enabled, use the command
storage aggregate modify -aggregate <aggr_name> -is-inactive-data-reporting-enabled true
to turn on inactive data reporting. - To display how much data is inactive on a volume, use the AutoSupport section
VOLUME.XML
orvolume show
command with the-fields performance-tier-inactive-user-data,performance-tier-inactive-user-data-percent
parameter
Example
cluster1::> volume show -fields performance-tier-inactive-user-data,performance-tier-inactive-user-data-percent vserver volume performance-tier-inactive-user-data performance-tier-inactive-user-data-percent ------- ------ ----------------------------------- ------------------------------------------- vsim1 vol0 0B 0% vs1 vs1rv1 0B 0% vs1 vv1 10.34MB 0% vs1 vv2 10.38MB 0% 4 entries were displayed.
- The
performance-tier-inactive-user-data
field displays how much user data stored in the aggregate is inactive - The
performance-tier-inactive-user-data-percent
field displays what percent of the data is inactive across the active file system and Snapshot copies
- To display how much data is stored in the performance and cloud tiers for FabricPool per volume you run the command
volume show-footprint
or use AutoSupport sectionVOL STATUS -F
Example :
cluster1::> volume show-footprint -volume vol1 Vserver : SVM1 Volume : vol1 Feature Used Used% -------------------------------- ---------------- ----- Volume Data Footprint 183GB 1% Footprint in Performance Tier 8.85GB 5% Footprint in StorageAccount 174GB 95% Flexible Volume Metadata 1.04GB 0% Delayed Frees 28.8MB 0% Total 184GB 1%
Additional Information
- Determining how much data in a volume is inactive by using inactive data reporting
- Monitoring the space utilization for FabricPool
- Available since ONTAP version 9.4, IDR provides an easier way to determine how much inactive, cold data is available on each ONTAP aggregate and volume
- IDR is automatically enabled on all SSD aggregates on ONTAP 9.6 (and above), as well as on all FabricPool aggregates from ONTAP 9.4 onwards. Starting with ONTAP 9.6, IDR can be enabled on all other aggregates (including HDD aggregates) as well.
- Once enabled, IDR monitors the underlying data access across a fixed 31-day cooling period to determine which data is considered inactive.
- Starting with ONTAP 9.8 the cooling period used by IDR can be adjusted for auto and snapshot-only tiering policies.
- Once identified, the size of this data can be visible on a per-aggregate and a per-volume basis