A ProxySG has stopped responding to user traffic and management access.
A ProxySG is inaccessible and a failed disk drive might be the cause.
There are many possible causes for the ProxySG to stop responding such as software/hardware defects, network connectivity issues, et c; however, a fault disk can be a likely culprit.
The following points can be helpful for further troubleshooting:
Often times following the steps above will restore the device to normal operating functionality but if the end result is that a disk or slot is completely inoperable, please contact Support for further assistance and possible RMA for replacement.