Maxtor hard drives are fairly noisy compared to most seagate hard drives. Western digital are in between.
However, if the hard drive is installed tightly and properly and all things being equal, meaning the rest of the computer is put together properly and the case is closed, then a hard drive shouldnt sound like there is a monster inside the case. In fact, it should be below the sound of any fans that are running.
But some noise from a hard drive only means its working fine.
Only bad noises are very loud and constant loud clicking noises, other than that, all should be fine.
If you do have a hard drive that is a bit too noisy for your liking heres a trick.
Get hold of some rubber, like the type from an old inner tube or a bicycle tire tube, like that. Cut it into strips and put the rubber in between the hard drive and where you are connecting it to on the case, such that screws will go thru it and the rubber will be between the hard drive and case. That should take care of any excess noise for you as long as the screws are the correct ones and they are all snug, not real tight, but snug.
Does that help you out any?
Good advice + great people = tek-tips