Bulk file status. Options: 1.ready(1) -indicates that the statistics file is only created, leaving the actual statistics collection to be started. This value cannot be set. 2.create(2) -indicates the starting of the file. If succeeds, the status changes to running. If fails, an error code is returned. 3.running(3) -indicates that the statistics file is already started successfully and in the running state currently. This value cannot be set. 4.nospace(4) -indicates that creating or writing the file failed. The cause is no free space in hard disk. This value cannot be set. 5.noMem(5) -indicates that creating or writing the file failed. The cause is no free memory. This value cannot be set. 6.writeErr(6)-indicates an Unknown error. The file cannot be written. 7.stopped(7) -indicates that the task is suspended. If this value is set when in the running status, then writing file is stopped. Meanwhile, the system generates a file based on the collected data.