// storport.h

ULONG StorPortGetActiveNodeCount(
  [in]  PVOID  HwDeviceExtension,
  [out] PULONG NumberNodes
);
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Windows Driver Kit DDI reference (nf-storport-storportgetactivenodecount)

StorPortGetActiveNodeCount function

Description

The StorPortGetActiveNodeCount routine returns the number of nodes that are present in the system.

Parameters

`HwDeviceExtension` [in]

A pointer to the hardware device extension for the host bus adapter (HBA).

`NumberNodes` [out]

A pointer to a variable that holds the number of nodes.

Return value

The StorPortGetActiveNodeCountroutine returns one of the following status codes:

Return code	Description
STOR_STATUS_NOT_IMPLEMENTED	This function is not implemented on the active operating system.
STOR_STATUS_SUCCESS	The operation was successful.
STOR_STATUS_INVALID_PARAMETER	The operation fails with this return value if one or more of the parameters are invalid, for example, if NumberNodes is set to NULL.

View the official Windows Driver Kit DDI reference