#ifndef _NTIOAPI_H

/**
 * The FILE_FS_DATA_COPY_INFORMATION structure is used to query the number of copies of data for a file system volume.
 */
typedef struct _FILE_FS_DATA_COPY_INFORMATION
{
    ULONG NumberOfCopies;
} FILE_FS_DATA_COPY_INFORMATION, *PFILE_FS_DATA_COPY_INFORMATION;

#endif
View code on GitHub