5D not mounting

I’ve already submitted a ticket to Drobo Support, but thought it’d be a good idea to share here, in case someone else has experienced this:

My drive is not mounting… I’ve tried using different cables (USB3 and TB), different computers, upgraded the Dashboard software, shutdown and removed and reseat all drives…

When I turn it on:

  1. Front power light glows yellow, all drive lights turn yellow, all bottom lights light blue and rightmost (xfer) light turns green.
  2. Front power light turns off, xfer light turns off.
  3. All blue lights turn off. Yellow drive lights remain on.
  4. All drive lights flash once, remain yellow and front power light turns yellow.
  5. Then the blue lights begin flashing in an inward flowing pattern. Yellow drive lights turn off. Front power light alternates between yellow and green.
  6. Blue lights stop. Front power light turns green.

Drive will remain in this state for a while and then repeat this pattern, over and over.

MacMini i7 running OS X 10.8.5
Dashboard 2.6.4 [72278]
Not sure what firmware is on the drive.

I’ve got 5 Seagate 3TB drives and the memory card that slips in the bottom of the drive.