Thanks for the input.  The drive was new - not formatted.  I pulled this drive and formatted in a pc - no problem, so any potential partition etc is gone, if in fact that was the problem.  After reinstalled in the 321, same issue - no prompt.  Get to Web UI but will not load config page.  When I pull the drive and just run single volume, again can load config page, but again eventually hangs.  Thoughts?