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VDS_PROVIDER_LBSUPPORT_FLAG enumeration

[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]

Specifies the set of valid flags for indicating which load balance policies a hardware provider supports.

Syntax


typedef enum _VDS_PROVIDER_LBSUPPORT_FLAG { 
  VDS_LBF_FAILOVER                 = 0x1,
  VDS_LBF_ROUND_ROBIN              = 0x2,
  VDS_LBF_ROUND_ROBIN_WITH_SUBSET  = 0x4,
  VDS_LBF_DYN_LEAST_QUEUE_DEPTH    = 0x8,
  VDS_LBF_WEIGHTED_PATHS           = 0x10,
  VDS_LBF_LEAST_BLOCKS             = 0x20,
  VDS_LBF_VENDOR_SPECIFIC          = 0x40
} VDS_PROVIDER_LBSUPPORT_FLAG;

Constants

VDS_LBF_FAILOVER

The provider supports using one primary path with the other paths being backup paths.

VDS_LBF_ROUND_ROBIN

The provider supports using all paths in round robin fashion.

VDS_LBF_ROUND_ROBIN_WITH_SUBSET

The provider supports using primary paths in round robin fashion. The backup paths are used if all of the primary paths fail.

VDS_LBF_DYN_LEAST_QUEUE_DEPTH

The provider supports using the path with the least number of active requests.

VDS_LBF_WEIGHTED_PATHS

The provider supports using the path with the least weight (each path is assigned a weight).

VDS_LBF_LEAST_BLOCKS

The provider supports using the path with the least blocks.

VDS_LBF_VENDOR_SPECIFIC

The provider supports a vendor-specific policy.

Remarks

Note  Additional constants might be added to the VDS_PROVIDER_LBSUPPORT_FLAG enumeration in future Windows versions. For this reason, your application must be designed to gracefully handle an unrecognized VDS_PROVIDER_LBSUPPORT_FLAG enumeration constant.
 

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2003 R2 [desktop apps only]

Header

Vds.h;
VdsHwPrv.h (for hardware providers)

See also

VDS Enumerations

 

 

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