Dell Support Center Hard Drive Test Failed

I have Studio 1737 for approximately 2 years.

I have been trying to figure out if this is something to be concerned about or not.

I ran the Dell Support Center program due to an alert that I needed to do a sceduled hard drive scan.

I ran it a few times and I keep getting the following errors:

Smart Short Self Test Failed: WHD16-VDS

Targeted Read Test Failed: WHD20-32D

Can anyone tell me what this means?