Review on Dell/Seagate Constellation ES ST4000NM0033 4TB 7200RPM 128MB Cache SATA 6.0Gb/s Internal Enterprise Hard Drive – 5 Year Warranty: Reliable Storage Solution for Robust Business Applications by Rebecca Guerra

I bought 8 of these and after some error checking only one had SMART errors which I sent back. Revain/Reseller (Dell) returned the unit promptly and shipped a replacement in less than 48 hours, no questions asked. I bought them because of the agent and reseller (Dell) and the amazing 5 year warranty. Will definitely buy more if they keep it up. Really good performance so far. Note. I had a new uptime of / 0 hours for the ones I received. If you received any that weren't NEW I would definitely get a replacement.