Event Details

Product: Microsoft Windows Operating System
Event ID: 306
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 map, or allocate more storage for, the storage space %1 has failed. This is because there was a write failure involved in the updating the storage space metadata. Return Code: %2

Summary

This topic describes how to troubleshoot storage space allocation failures in a Storage Spaces storage pool..

Causes

The attempt to map, or allocate more storage for the storage space has failed. More physical drives are needed.

Resolutions

To resolve the problem:

  • Add more physical drives to the storage pool
  • Use Optimize Drives to consolidate data. To start Optimize Drives from Windows Server, on the Server Manager menu bar, click Tools, and then click Defragment and Optimize Drives.
  • Delete unused storage spaces