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Quota Minifilter Driver

Updated: January 27, 2011

Applies To: Windows Server 2008

The quota minifilter driver intercepts file system calls and keeps track of storage usage for folders and volumes under quota management. It also enforces quotas by rejecting I/O requests that would cause a storage quota limit to be exceeded.

Managed Entities

The following is a list of the managed entities that are included in this managed entity:

Name Description

Folder and Volume Quotas

With File Server Resource Manager you can create folder and volume quotas to limit the amount of disk storage space that is allowed for a volume or folder—and can generate notifications when the quota limits are approached or exceeded.

Aspects

The following is a list of all aspects that are part of this managed entity:

Name Description

Quota Minifilter Driver Integrity

For quota enforcement to work, the quota minifilter driver must be working properly, and it must be correctly attached to the volume. If the quota minifilter driver is experiencing problems, quota scans might fail, and updated quota usage information of volumes and folders will not be available. If the driver cannot attach to the volume, quotas cannot be enforced on that volume.

Quota Minifilter Driver Metadata Integrity

To enforce quotas, the quota minifilter driver uses configuration information that is stored in a metadata file. If there is a problem with this metadata file, the quota minifilter driver cannot attach to the volume, and users might be able to exceed their quota limits.

Related Management Information

File Services

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