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Understanding Drive and Storage Health in UniFi

All HDDs and SSDs have a limited lifespan and naturally degrade over time. UniFi OS makes it easy to monitor the health of your drives, helping you protect your important data with confidence. If you're looking to learn about storage protection and data redundancy in UniFi, click here. 

Optimal

Your drive is healthy and working properly. Optimize your drive health to extend its lifespan by:

Drive Failure Detected

This drive can be added to your storage pool, but shows early signs of failure. We strongly recommend replacing it as soon as possible. Most common issues:

  • Bad sectors on the drive.
  • Uncorrectable drive errors.
  • Failures reported by the drive's SMART system (Self-Monitoring, Analysis and Reporting Technology).
  • SSDs reaching 70% of their recommended read/write lifespan.

Drive at Risk of Failure

This drive cannot be added to your storage pool. Its health status indicates a high risk of failure, so it should be replaced immediately.

UniFi Data Found

This status appears if the drive was previously used in another UniFi console. Here's what to do:

  • If transferring drives between UNAS or after a factory reset without restoring from a backup, follow the instructions here to restore the drives from backup.
  • If transferring drives from a different UniFi console type (e.g., UNVR to UNAS), the drives won’t be accessible. You must reformat them before use. Ensure you have backed up any necessary data before formatting.

Reduced Storage

The extra capacity will not be used if the new drive has more capacity than the existing ones in the storage pool. The system will match the size of the smaller drives. Always use drives with matching capacities to maximize available storage.

Smaller Size Drive

If the new drive has less capacity than the existing drives, it cannot be added to the storage pool. Ensure all drives are equal in size before adding new ones.

Limiting/Limited Performance

This warning appears when the new HDD's speed (RPM) differs from your existing HDDs, which can reduce performance. Click on the HDD status for specific optimization steps. Always match HDD speeds (RPM) across your storage for the best performance.

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