i need to know the names of different parts of a disc drive?

Answer 1

here

http://www.pcdoctor-guide.com/wordpress/?p=595

Answer 2

there are many parts to a hard disc drive 1)case made of moulded metal 2) platter...this is where all the data is stored,the platters are magnetic discs which spin at various speeds 5200rpm and 7600rpm also 10,000rpm on some drives and in some drives there can be multiple platters on top of each other to give extra storage 3) arm..this is responsible for finding the data on the platter..when you hear a scrapping noise from your drive,this is the arm working at top speed,such as when you are transfering files
4) 20 pin ide adapter,...this is where the drive is connected to the motherboard with a ide ribbon cable,also you can have sata connectors which are a faster interface,these have 4 pins instead of 20 but are twice as fast as the older type
5) 5v lead socket,this is where you connect the hard drive to your psu(power supply unit) ,you should have loads of these hanging loose in your case
6) breather hole...this is a pin hole on the top of the drive case used for maintenence like special fluid to clean the drive,however some drives dont have these
7) finally jumper setting pins...these are where you change the jumper settings for your drive ,,for example if you are using just one drive you set it to master or single ,,and if you have two drives you set the 1st to master and the 2nd to slave.there is another setting "cable select"which will automatically configure the drive to suit your system
you must allways check your jumper settings as they differ from manufacturer to manufacturer,a master setting in a seagate drive will be different from a master in a western digital drive so be careful,you will find the settings diagram on the top of your drive or from the manufacturers website
a normal lifespan for a disc drive is between 3 to 6 years and the sizes range from 20gb to 2000gb(for servers)
i hope you found this info helpful
good luck