PATRI Wah you made my day - Either it is DISC or the DISC brake pads , Drum or Brake shoes ! - Neither drum nor disc need replacement if the brake pads & the shoes are replaced at required intervals. THE LOSERs who TURN the disk & drums un-necessarily at every brake 'SERVICE' ruin the stuff without realizing what risk they push onto driver & the passengers
Like Xulfiqar has repeatedly said on this very forum time & time again every time the brake pads are changed the shims need special grade of grease so the clippers adjust the pads according to worn out disc instead the JUGGRO ustads turn the disk and ruin it.
@smoke now you have new disc , please ensure that at next brake pads replacement ( 7000 - 10000 as per your driving conditions ) FIT-IN a BUM-BO to ur mechanic not to turn the disk under no circumstance and use silicon grease on clipper shims only.