Imbalance in object storage used on storage nodes at the same site on StorageGRID

• NetApp StorageGRID
• Erasure Coded (EC) rebalance procedure

• In StorageGRID UI > Nodes, some storage nodes are reporting higher Object Storage Used while other nodes have significantly lower usage at the same site, using the same appliance type.
  • Example: 16 node site using all SG6060s appliances:
  • Storage nodes 1 - 6 reports ~36% used with 22TB drives
  • Storage nodes 7 - 8 reports ~90% used with 12TB drives
  • Storage nodes 9 - 16 reports ~70% used with 18TB drives
• ​​​A manual EC rebalance is succeeding with no moves completed:

root@admin_node:~# rebalance-data start --site "site_name"
ECS site rebalance started successfully with job ID 123456789.
root@admin_node:~# rebalance-data status --job-id 123456789
==============================================================================
Job ID: 123456789
Site: site_name
State: Success
Planned Moves: 0
Completed Moves: 0
Failed Moves: 0
Start Time: 2025-06-09 17:50:14 UTC
End Time: 2025-06-09 17:51:22 UTC
Site Imbalance: 0.01513
Retry Rebalance: No