Event Details

Product: Microsoft Windows Operating System
Event ID: 303
Source: StorageSpaces-Driver
Version: Windows Server 2016, Windows Server 2012 R2, Windows Server 2012; Windows 10, Windows 8.1, Windows 8
Level: Error
Message: Drives hosting data for storage space have failed or are missing. As a result, no copy of data is available. Return Code: %2


This topic describes how to troubleshoot failed or missing drives in a Storage Spaces storage pool.


This event can occur if a drive in the storage pool fails or is removed.


To resolve the problem:

  • If there are missing drives, reconnect the missing drives.
  • Verify physical drives are functional. Replace failed physical drives if necessary.