Storage Spaces Registry Path in Windows

This article provides the exact Windows Registry paths used to manage and configure Storage Spaces and Storage Pools. It details the underlying spaceport driver keys, parameter settings, and device enumeration paths in regedit, explaining how Windows handles virtualized storage configurations at the system level.

Primary Storage Spaces Driver Registry Path

The core service and driver responsible for Storage Spaces in Windows is Spaceport (spaceport.sys). Its main configuration branch is located at:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\spaceport

Configuration and Parameters

To modify operational behavior, caching, and specific driver policies for Storage Spaces, Windows references the Parameters subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\spaceport\Parameters

Within this key, advanced configurations such as driver timeouts, telemetry, and tiering behaviors may be defined depending on your Windows version and configuration state.

Storage Pool and Virtual Disk Enumeration

When a storage pool or virtual disk (storage space) is created, the operating system enumerates these virtual storage objects in the following registry locations:

• Storage Spaces Enumeration:
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\spaceport\Enum
• Storage Volume Pool Device Key:
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\STORAGE\VolumePool

Important Operational Note

While the spaceport registry keys control the driver behavior and device registration, the actual metadata defining pool layout, disk resilience (mirroring, parity), and slab allocation is written directly to the physical disks participating in the pool. Direct registry modifications should be approached with caution, as changing driver parameters can affect pool stability and performance.