A Green Hard Disk Drive (not Hulk’s) has recently come our way and we were required to Wipe it, with zeros.
What is special about these drives is that they take a while to boot up, therefore anyone who is using a wiping tool (e.g., DeepSpar) should make a note that these drives are slow at start and the user should be patient. Once they get going they run at normal speed, specific to that drive obviously.
The drive we have is a Western Digital Caviar GP WD5000 .
 – WD Caviar® Green(TM) 500 GB SATA – http://www.wdc.com/en/products/products.asp?driveid=338