Is the hard disk serial number sn or pn?

Sn. There are SN and PN on the hard disk label, where SN is the serial number, and SN code is the abbreviation of serial number, sometimes called SerialNo, which is the serial number of the product. PN refers to the PartNumber of the part number, and it is also a series of numbers or combinations of numbers and letters formulated by the manufacturer to indicate the unique identification. Hard disk is one of the main storage media of computer, which is composed of one or more disks made of aluminum or glass.