Ticket 47385 - Disk Monitoring is not triggered as expected.
Bug Description: Is using large values for the threshold the faeture does not
Fix Description: There was an overflow of a integer value uses to determine
if the server should enter the "shutdown mode". Also removed
some unnecessary checks to see if disk space is continuing to drop.
Reviewed by: Noriko(Thanks!)
(cherry picked from commit 8486837842cd6779918520a17ca7c48441fe493b)