Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware of power bumps -- data difficult to recover

After a power bump the MV2020 which we'd had for 3 years died. Called a tech -- he could not recover the data! Called HP, and they can't do it either. This is a backup device that has no backup the one time you need it -- when something goes wrong.Loved it until that power bump, but a backup device that fails in a power bump isn't worth much.