Storage Spaces Event 307: The attempt to unmap or trim the storage space has failed
Event Details
| Product: | Microsoft Windows Operating System |
| Event ID: | 307 |
| Source: | StorageSpaces-Driver |
| Version: | Windows Server 2016, Windows Server 2012 R2, Windows Server 2012; Windows 10, Windows 8.1, Windows 8 |
| Level: | Error |
| Message: | The attempt to unmap or trim the storage space %1 has failed. Return Code: %2 |
Summary
This topic describes how to troubleshoot storage space trim failures in a Storage Spaces storage pool.
Causes
The attempt to unmap or trim the listed storage space has failed.
Resolutions
To resolve the problem:
- If there are missing drives, reconnect the missing drives.
- Verify physical drives are functional. Replace failed physical drives if necessary.