Author wasn't able to get stable test results with two or more simultaneous tests.
Spindle start/stop function on ATA/SATA/USB/FireWire/SCSI HDD.Reporting defect information on SCSI HDD.Changing AAM, APM, PM parameters on ATA/SATA/USB/FireWire HDD.Reading and analyzing identity information from ATA/SATA/USB/FireWire/SCSI HDD.