Disk events

State

At risk

Cause 1

An impending error condition was detected on an internal or external disk and is now at risk of failure.

Solution 1

The application is detecting early warning signs of failure with an NVMe or SATA disk that result from a slow degradation over time. When a disk is reported at risk, the user can reset that disk to normal, but we recommend that the user contacts the manufacturer for more information to prevent potential data loss. Follow this procedure to reset the disk to normal:

  1. Under ‘Status’, in the Manage subsection, locate the disk reported as at risk. The user can also perform this action from Manage Disk, which is accessible by clicking on the disk in the storage system view.

  2. Click Reset disk to normal. The page refreshes instantly, returning to a normal state.

NOTE:

Completing this action clears the event on the disk and does not delete existing data. However, ignoring early warning signs of disk failure may result in data loss.

If the disk reported at risk is included in a RAID volume and a compatible spare disk is available, the rebuild process will start automatically. Once complete, the disk reported at risk becomes available and the user can reset it to normal to return to a healthy state.

Cause 2

An unexpected error was detected on a disk that has RAID configuration data (metadata) on it.

Solution 2

In this state, it is likely that some or all of the disk data is inaccessible. After backing up any accessible data, the user will need to clear the metadata and reset the disk to return to a normal state.

WARNING:

Completing this action will permanently delete existing metadata. Back up any accessible data before continuing.

  1. Under ‘Status’, in the Manage subsection, locate the disk reported as at risk. The user can also perform this action from Manage Disk, which is accessible by clicking the disk in the storage system view.

  2. Click Clear and reset disk, and then click Yes to confirm.

  3. Once complete, the page refreshes with the disk returns to a normal state.

Missing

Cause

An array disk is not present or physically connected to the computer.

Solution

Ensure that the disk is securely connected to the NVMe or SATA port and that the data cable is functioning properly. If the disk is lost or cannot be reconnected, the user will need to connect a new NVMe or SATA disk, and then rebuild the volume to that new disk. See Degraded volumes for instructions on how to rebuild a volume.

Failed

Cause

An internal or external disk has failed to properly complete read and write operations in a timely manner, and it has exceeded its recoverable error threshold.

Solution

Back up the user’s data and we recommend that the user replace the disk as soon as possible. If the failed disk is an array disk, the volume will be reported as degraded or failed depending on its configuration. See Degraded volumes for instructions on resolving the problem.

In a failed state, disk data may be lost, but the user can try resetting the disk to normal, and then attempt a data recovery. Follow this procedure to reset the failed disk to normal:

  1. Under ‘Status’, in the Manage subsection, locate the disk reported as failed. The user can also perform this action from Manage Disk, which is accessible by clicking the disk in the storage system view.

  2. Click Reset disk to normal. The page refreshes instantly, returning to a normal state.

NOTE:

If the failed array disk is part of a redundant volume, the volume will start rebuilding automatically as soon as the disk is reset to normal.