Seems I spoke to soon in my praise Scan thread, (see here) although this isn't Scan's fault at all.
I bought two Samsung 750Gb HDDs. Slapped them in my new Synology DS408 and waited for it do its magic. Only it didn't do it, it got halfway through formatting the drives before telling me they were unrecognisable. I tried again, same error.
After 6 hours of dicking around I decided to put them into a PC and have a look at what was going on. I used ActiveSMART, HDTune and Everest and got the same SMART error with each program.
See this gallery of screenshots for more info - Gallery of Samsung failure - they look identical but they are two separate drives (see the serial numbers A02154 and A02136).(B8) Unknown Failure imminent
Am I right in thinking Scan would just run the Samsung ES-Tool to test the drives? I'm going to run it myself tomorrow but I want to be sure before RMAing these.
Ta in advance