A
"quietish" vibration type noise sounds more like a hardware problem that a software application such as Diskwarrior cannot possibly correct. The only practical correction being a new hard drive.
Having said that, I know that when I am chasing difficult or mysterious problems I often begin to hear or see things that had been there all along, but I simply had never noticed before. So your
"quietish" vibration type noise may or may not be anything.
There are tools that can
help detect impending drive failure:
- Apple Hardware Test (that comes on the OS X install disk that came with your Mac), Diskwarrior, and Drive Genius all have a complete suite of drive hardware tests
- TechTool Pro, like the others, has a full suite of drive hardware tests and in addition provides a far more fulsome readout of the S.M.A.R.T. values than any of the others. A drive may be failing and still pass S.M.A.R.T. but the TTP readout will flag deteriorating parameters before actual failure.