Hitachi / IBM - DFT “Drive Fitness Test”
http://www.hgst.com/hdd/support/download.htm

Western Digital “Data Lifeguard”
http://support.wdc.com/download/index.asp#dlgtools

Maxtor “Powermax”
http://www.maxtor.com/en/support/downloads/powermax.htm

Fujitsu “FJDT”
http://www.fujitsu.com/us/services/computing/storage/hdd/support/utilities.html

Samsung “hutil”
http://www.samsung.com/Products/Hard...ties/hutil.htm

Seagate “Seatools”
http://www.seagate.com/support/seatools

Toshiba - N/A
There are no tools available for Toshiba, but you may be able to use IBM or Maxtor's drive tools as well as other third party programs