Excerpt: These were to replace some WD Red drives (from another vendor) which, contrary to their description, were "bulk" drives not subject to warranty. I had no problems registering the drives purchased through B&H with Seagate.
Summary: So far so good. I usually buy WD but this one had great reviews and the price was right. What else can I say. It is working fine in a OWC dual drive bay via Firewire 800 to a 2010 Mac Pro. No issues!
Summary: I have been running these drives for about 6 months now without any issues. I set them up in a RAID 1 array and achieve 100MB/s over my network. I will never understand why people use non-NAS drives and in NAS arrays and wonder why they have failures.