Recovering from storage volume failure where the system drive is intact

You need to complete a series of tasks to recover a virtual Storage Node where one or more storage volumes on the Storage Node have failed, but the system drive is intact. If only storage volumes have failed, the Storage Node is still available to the StorageGRID Webscale system.

About this task

This recovery procedure applies to virtual Storage Nodes only: if storage volumes have failed on an appliance Storage Node, use the procedure for "Recovering a StorageGRID Webscale appliance Storage Node."
flowchart overview of storage volume recovery

Steps

  1. Reviewing warnings about storage volume recovery
    Before recovering failed storage volumes for a Storage Node, you must review the following warnings.
  2. Identifying and unmounting failed storage volumes
    When recovering a Storage Node with failed storage volumes, you need to identify and unmount failed storage volumes.
  3. Recovering failed storage volumes and rebuilding the Cassandra database
    You need to run a script that reformats and remounts storage on failed storage volumes, and rebuilds the Cassandra database on the Storage Node if the system determines that it is necessary.
  4. Restoring object data to a storage volume where the system drive is intact
    After recovering a storage volume on a Storage Node where the system drive is intact, you can restore object data to the recovered storage volume from other Storage Nodes and Archive Nodes.
  5. Checking the storage state after storage volume recovery
    You need to 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
Related tasks
Recovering a StorageGRID Webscale appliance Storage Node
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Part number: 215-12400_2020-05_en-us
May 2020