This Auction is for ONE NEW Factory Recertified SUN 36GB 10K drive.  The SUN number listed on the drive is 390-0160.  The original manufacturer of the drive is Seagate under part number ST336607LC.  These are New bulk and come with a NON-DOA Warranty.  The buyer is responsible for researching all compatibility issues with regards to the environment they intend to install the drive in.