Caché Version String: Cache for UNIX (Red Hat Enterprise Linux for x86-64) 2016.2.1

We have a mirrored Ensemble system (110,  backup and 210, primary). At one time (14:00) there is a disruption in the production. The messages are not being processed. 

Looking at the pButtons (every 10 seconds) I see the following abnormal at the WDphase

and the backup

The different values of WDphase are:

0: Idle (WD is not running)

5: WD is updating the Write Image Journal (WIJ) file.

7: WD is committing WIJ and Journal.

8: Databases are being updated.