Today one of our producation VMs became unreposnsive with VMware graphs were showing CPU 100% usage and CPU high alerts in vCenter logs, After diving deep into logs, below are my observations from VMware and Linux logs within period before the crash, From ESXi side, we can see host has lost access to SAP01 datastore, but our VM is resided in DS01, So it should not affects this VM operation. Lost access to volume 547f2eaa-1a00d590-44f0-001018b3dc14 (SAP01) due to connectivity issues. Recovery attempt is in progress and outcome will be reported shortly. info 7/17/2013 6:56:47 AM SAP01 Successfully restored access to volume 547f2eaa-1a00d590-44f0-001018b3dc14 (SAP01) following connectivity issues. info 7/17/2013 6:56:47 AM 10.8.225.211 From VM guest side, there is only 1 entry related to CPU status has been recorded: Alarm 'Virtual machine CPU usage' changed from Green to Red info 7/16/2015 1:59:10 PM PRODvm From VM guest vmware.log file, the