Instruct: Classify a review into positive or negative sentiment.
Query: I have encountered problems with the 5000DV

I bought 3 5000DV drives for backup and additional storage. The first disk ran quite well for a few months. Then, the led turned red forever and no data was accessible anymore. The second HD suddenly showed a clicking noise. My PC slowed down dramatically. Obviously the drive had internal problems but was still working. After a while the same symptoms like for the first drive showed up (red led burning). Today, I heard a periodic ringing signal. It was the drive not working anymore. So, the second drive has gone.