msvm-virtualharddiskstate.md

description	ms.assetid	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location
Provides state information for an existing virtual hard disk image.	b0177906-71dc-4be8-b351-97d7ef427acd	Msvm_VirtualHardDiskState class	reference	05/31/2018	APIRef kbSyntax	Msvm_VirtualHardDiskState Msvm_VirtualHardDiskState.FileSize Msvm_VirtualHardDiskState.InUse Msvm_VirtualHardDiskState.MinInternalSize Msvm_VirtualHardDiskState.PhysicalSectorSize Msvm_VirtualHardDiskState.Alignment Msvm_VirtualHardDiskState.FragmentationPercentage Msvm_VirtualHardDiskState.Timestamp	DllExport	vmms.exe

Msvm_VirtualHardDiskState class

Provides state information for an existing virtual hard disk image.

The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.

Syntax

[AMENDMENT]
class Msvm_VirtualHardDiskState
{
  uint64   FileSize;
  boolean  InUse;
  uint64   MinInternalSize;
  uint32   PhysicalSectorSize;
  uint32   Alignment;
  uint32   FragmentationPercentage;
  DATETIME Timestamp;
};

Members

The Msvm_VirtualHardDiskState class has these types of members:

• Properties

Properties

The Msvm_VirtualHardDiskState class has these properties.

Alignment

Data type: uint32

Access type: Read-only

Specifies the type of alignment of the virtual hard disk. This will be one of the following values.

Value	Meaning
0	512 byte alignment.
1	4 KB alignment.

FileSize

Data type: uint64

Access type: Read-only

The size of the virtual hard disk file (the actual amount of storage being consumed by the file), in bytes.

FragmentationPercentage

Data type: uint32

Access type: Read-only

An approximation of the percentage of virtual disk blocks that are fragmented in the virtual hard disk file.

InUse

Data type: boolean

Access type: Read-only

This property is reserved for future use.

MinInternalSize

Data type: uint64

Access type: Read-only

The minimum size that the virtual hard disk can be shrunk to, in bytes. This size is rounded up to the next largest multiple of the sector size.

PhysicalSectorSize

Data type: uint32

Access type: Read-only

The physical sector size used by the underlying physical disk, in bytes.

Timestamp

Data type: DATETIME

Access type: Read-only

The timestamp of the virtual hard disk

Note

Added in Windows 10 and Windows Server 2016.

Requirements

Requirement	Value
Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Namespace	Root\Virtualization\V2
MOF	WindowsVirtualization.V2.mof
DLL	Vmms.exe

See also

GetVirtualHardDiskState