Win32_DiskQuota - The Win32_DiskQuota association class tracks disk space usage for NTFS volumes. System administrators can configure Windows to prevent further disk space use and log an event when a user exceeds a specified disk space limit. They can also log an event when a user exceeds a specified disk space warning level. Note that disk quotas cannot be set for the Administrator accounts themselves.

Win32_DiskQuota
The Win32_DiskQuota association class tracks disk space usage for NTFS volumes. System administrators can configure Windows to prevent further disk space use and log an event when a user exceeds a specified disk space limit. They can also log an event when a user exceeds a specified disk space warning level. Note that disk quotas cannot be set for the Administrator accounts themselves.
NameSpace Path
\ROOT\CIMV2
PROPERTY	SMS_REPORT	CIMTYPE	DESCRIPTION
DiskSpaceUsed		UInt64	The DiskSpaceUsed property indicates the current number of Bytes currently in use by this particular user or group.
Limit		UInt64	The Limit property indicates the limit set for this particular user or group.
QuotaVolume		Reference	The QuotaVolume reference represents the disk volume which has disk quotas.
Status		UInt32	A Status property indicates the current status of the Disk Quota.
User		Reference	The User reference represents the user account associated with a disk quota.
WarningLimit		UInt64	The WarningLimit property indicates the warning limit set for this particular user or group.
SAMPLE DATA INSTANCE
[LOCALE(1033): ToInstance Amended] instance of Win32_DiskQuota { DiskSpaceUsed = "0"; Limit = "18446744073709551615"; QuotaVolume = "Win32_LogicalDisk.DeviceID=\"C:\""; Status = 0; User = "Win32_Account.Domain=\"SCCM01\",Name=\"Administrators\""; WarningLimit = "18446744073709551615"; };