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Because of these inherent challenges, Swarm takes the conservative approach of retiring a volume as soon as it receives a configurable number of I/O errors. If the configured number of additional errors are received during the retire (disk.ioErrorTolerance), Swarm immediately marks the volume as Unavailable and kicks off both the failed volume recovery process (FVR) and the erasure-coding recovery process (ECR) to relocate all objects on the volume's objects.

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Tip

If Swarm retires a disk automatically because of I/O errors, check the diagnostic data collected in the logs. For the Swarm UI, see Managing Chassis and Drives. (v11.1)

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