Microsoft-Windows-Storage-Tiering-IoHeat

5 events across 1 channel

Event ID 1: Volume VolumeGuid (ID VolumeIdHash) is measuring I/O heat.

#
Provider
Microsoft-Windows-Storage-Tiering-IoHeat
Channel
Heat
Task
HeatInit

Description

Volume VolumeGuid (ID VolumeIdHash) is measuring I/O heat.

Message #

Volume %1 (ID %2) is measuring I/O heat.

Fields #

NameDescription
VolumeGuid GUID
VolumeIdHash UInt32

Event ID 2: READ - Volume: VolumeIdHash File: FileIDLowerFileIDUpper Offset: Offset Length Length.

#
Provider
Microsoft-Windows-Storage-Tiering-IoHeat
Channel
Heat
Task
MeasureHeat

Description

READ - Volume: VolumeIdHash File: FileIDLowerFileIDUpper Offset: Offset Length Length.

Message #

READ - Volume: %5 File: %1%2 Offset: %3 Length %4

Fields #

NameDescription
FileIDLower UInt64
FileIDUpper UInt64
Offset UInt64
Length UInt32
VolumeIdHash UInt32

Event ID 3: WRITE - Volume: VolumeIdHash File: FileIDLowerFileIDUpper Offset: Offset Length Length.

#
Provider
Microsoft-Windows-Storage-Tiering-IoHeat
Channel
Heat
Task
MeasureHeat

Description

WRITE - Volume: VolumeIdHash File: FileIDLowerFileIDUpper Offset: Offset Length Length.

Message #

WRITE - Volume: %5 File: %1%2 Offset: %3 Length %4

Fields #

NameDescription
FileIDLower UInt64
FileIDUpper UInt64
Offset UInt64
Length UInt32
VolumeIdHash UInt32

Event ID 4: DELETE - Volume: VolumeIdHash File: FileIDLowerFileIDUpper.

#
Provider
Microsoft-Windows-Storage-Tiering-IoHeat
Channel
Heat
Task
MeasureHeat

Description

DELETE - Volume: VolumeIdHash File: FileIDLowerFileIDUpper.

Message #

DELETE - Volume: %5 File: %1%2

Fields #

NameDescription
FileIDLower UInt64
FileIDUpper UInt64
Offset UInt64
Length UInt32
VolumeIdHash UInt32

Event ID 5: TIERMOVE - Volume: VolumeIdHash File: FileIDLowerFileIDUpper Offset: Offset Length Length Source: Source Destination: Destination.

#
Provider
Microsoft-Windows-Storage-Tiering-IoHeat
Channel
Heat
Task
MeasureHeat

Description

TIERMOVE - Volume: VolumeIdHash File: FileIDLowerFileIDUpper Offset: Offset Length Length Source: Source Destination: Destination.

Message #

TIERMOVE - Volume: %7 File: %1%2 Offset: %3 Length %4 Source: %5 Destination: %6

Fields #

NameDescription
FileIDLower UInt64
FileIDUpper UInt64
Offset UInt64
Length UInt32
Source UInt32
Destination UInt32
VolumeIdHash UInt32

Provenance

Where this provider's schema came from, and which Windows build it was observed on. Windows can change a provider's event schema between builds, so use this to judge whether it matches the build you collect from.

ETW provider GUID 990c55fc-2662-47f6-b7d7-eb3c027cb13f

Defined in microsoft-windows-storage-tiering-events.dll, which carries the event manifest.

Observed on:

  • WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.1, captured 2026-06-02
  • Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.1, captured 2026-06-02

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