This would definitely fall in the 'unsupported' category but a simple workaround would be to create a SQL Trigger to show volumes as Down when they are not responding to queries. You can set the Status = 12 (Unknown) if that makes more sense.
CREATE TRIGGER [dbo].[volumestatuschange]
ON [dbo].[Volumes]
AFTER UPDATE, INSERT
AS
IF EXISTS (SELECT * FROM Volumes WHERE VolumeResponding='N' )
BEGIN UPDATE Volumes SET Status=2 WHERE VolumeResponding='N'
END