Hi All
I bought, received and installed a Drobo v2 running 4 x 2TB WD Caviar Green drives without incident.  The reason for purchasing the Drobo was to reduce wires and simplify things from my 8 external HD's and support hubs to 2 Drobo's.

As such I had been copying files over from my other external HD's and doing a full hard format on them when complete.  2 nights ago I left the PC formatting one HD and copying files from another.  I woke up the following morning to discover the computer had rebooted overnight in the centre of both these.

Not a problem with the file copying but the one in the middle of formatting "disappeared" for a while then reappeared suddenly requiring format.  That  is now complete but I am having another issue now.

I still have about 5 drives to go and not one of them is being recognised when plugged in.  I have just tried several of them on another computer without issue.  The Drobo unit is plugged in via USB 2 and Ihave tried it succesfully in all sorts of my USB ports (a second card, integrated both front and back) but the other drives will simply not work.

Any suggestions as to what this might be??????