You should replace that drive soon depending on your storage configuration.
If you have SMART tests configured to run every so often, it should list what the raw values are. The important parameters to watch are
Offline_Uncorrectable
Current_Pending_Sector
Reallocated_Sector_Ct
Ideally you want them all to be 0. However, if they are atleast below threshold values, you should be fine but you should keep an eye on those numbers and if they ever go up, replace the drive asap. In fact, I would suggest go ahead and buy a new drive if you need to and replace it.