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vSAN device encounters a permanent error when devices are not readable or writeable (2071075)

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A vSAN storage device that backs up the datastores might fail.
This occurs due to a faulty device firmware, physical media, or storage controller or when certain storage devices are not readable or writeable.

Typically, such failures are irreversible. In some instances, permanent data loss might also occur, especially when data is not replicated on other nodes before failure. vSAN automatically recovers data when new devices are added to the storage cluster, unless data lost is permanent.

For more information about device failures, see the vendor-specific device documentation.


To avoid permanent loss of data due to device failures, you must set the Number of failures to tolerate policy to greater than zero. For information about setting vSphere admission control policies, see vSAN and Storage Policy-Based Management. Ensure that you have provisioned the hosts with enough disk space to accommodate any additional requirement for replication.

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