Dan, Dave:

Dan reports that h1fw0's main raid (E18-0 controlled by h1ldasgw0) is not accessible from LDAS. The unit is in a hardware fault, audible alarm is sounding, both STAT LEDs on front are RED. On the rear controller 0 (top unit) is RED and controller 1 is GREEN.

h1fw0 continues to write to this file system, so it looks like a partial failure?