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StorageGRID node reports zero or too low for replicated or erasure coding data

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Applies to

NetApp StorageGRID 11.x

Issue

The issue is functionally cosmetic as it does not actually impact GRID function. It when overhead is calculated during one of the following operations:

  1. Node creation during deployment.
  2. Node creation during expansion.
  3. Node recovery.
  4. Node reboot
  5. Upgrade

After, the values for one or more Object Store volumes (RangeDBs) show zero usage or a too low amount.

NOTE: This can go unnoticed until a sizable amount of data has been ingested.

This can be identified by one or more of the following examples:

  • StorageGRID node LDR overview for individual volumes show inconsistent values for "Replicated Data" or "EC Data".

StorageGRID node LDR

  • Space usage dropped after replacement of hardware

  • One node showing a different used %:

StorageGRID node reports too low utilization

  • One site showing a higher usage than the other when using a copy per site ILM rule:

StorageGRID node LDR

  • The usage is different from the size reported by ONTAP within a Fabric Pool configuration.

 

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