Joe,
if you shutdown VA from CommandView which confirms that VA did shutdown successfully or through serial port which confirms shutdown with 'shutdown > shutdown>' then you're safe - maps are flushed to the map disks (and data from cache) and after turning VA with depleted batteries on it will detect maps and load them.
Although if you simply pressed power button or cut power then maps are saved within the cache which is backed up for approximately 5 days. After 5 days maps (and data from cache contents) got lost and not flushed to the disks. I wonder if VA after powering it up detects that maps stored are not recent and become 'blank' and to restore them you need to run 'recover' from the serial port to force VA to read maps from map disks (note: please never run recover if you're not 100% sure you need to do it).
This is the way how to shut VA down.
Regarding powering on - I always do it as with FC60 - JBODS first, and controller enclosure next, although if all are powered on at once it works also. Not good idea to power main enclosure first and JBODs then within 5 minutes.
If you still has VA blank and not 'already initialized' please attach 'dsp -s' output from serial port to your next reply
Eugeny
