5 Year warranty definitely a big plus considering I've had to replace this drive twice (covered by warranty). Initial drive lasted approx. 4 years before Reallocated Sector Count started growing rapidly. Got a replacement under warranty from PBTech, which also started developing Sector errors after 4 days use. I now have another replacement which has been stable for over a month - fingers crossed. PBTech have been great with their service, just my experience with this model has been dubious.