Recovering from system drive failure and possible storage volume failure

If the system drive on a virtual Storage Node has failed, the Storage Node is not available to the StorageGRID Webscale system. You must complete a specific set of tasks to recover from a system drive failure.

About this task

This recovery procedure applies to virtual Storage Nodes only.
Flowchart overview of non-appliance Storage Node recovery with system drive failure

Steps

  1. Reviewing warnings for Storage Node system drive recovery
    Before recovering a failed system drive of a Storage Node, you must review the following warnings.
  2. Replacing the Storage Node
    If the system drive has failed, you must first replace the Storage Node.
  3. Selecting Start Recovery to configure the Storage Node
    After replacing the Storage Node, you must select Start Recovery in the Grid Manager to configure the new node as a replacement for the failed node.
  4. Remounting and reformatting storage volumes ("Manual Steps")
    You must manually run two scripts to remount preserved storage volumes and reformat failed storage volumes. The first script remounts volumes that are properly formatted as StorageGRID Webscale storage volumes. The second script reformats any unmounted volumes, and rebuilds the Cassandra database on the Storage Node as required.
  5. Restoring object data to a storage volume
    After recovering a storage volume on a Storage Node where the system drive also failed and was recovered, you can restore object data to the recovered storage volume from other Storage Nodes and Archive Nodes.
  6. Checking the storage state after recovering a Storage Node system drive
    After recovering the system drive for a Storage Node, you must verify that the desired state of the Storage Node is set to online and ensure that the state will be online by default whenever the Storage Node server is restarted.
Parent topic: Recovering from Storage Node failures
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Part number: 215-12801_2019-08_en-us
August 2019