You notice that the nodes are degraded in your PeerApp system due to two or more caches on standby and the issue is repeated even after you restart the whole grid.
Check if the storage disks are mounted correctly
Check if the storage disks in the UBView are mounted correctly. Check if there is any issue in connectivity between CEs and storage.
This can be done in the UBView by checking Home | Statistics > Storages and looking for any inactive disks or storage.
Remount them and check if the issue persists.
Restart the CEs
The problem can arise due to a communication problem between the leader and other CEs. Restarting the CEs can improve communication and resolve the issue. Refer to the article Multiple CEs in standby status for more information about this possible workaround.
Restart the system with switch configuration
Restarting your system while changing the management/iSCSI switch configuration can be used as a workaround for this situation. Refer to the article Multiple CEs going down repeatedly for more information.
The system should be up and running after the restart. Observe the system and in case the issue persists, let the PeerApp support know as the issue will need to be escalated to the engineering team for RCA.
Make sure that you send logs across all CEs to the support agent which will help in understanding the cause and resolution of the issue.
The logs are located under opt/pang/logs/pang.log/
Check and clean disk spaces
In order to start the system reboot, you have to first check the customer's disk partitions and see if they are full or have very little storage capacity. Clean the disks and partitions including the Management server.