CAM stands for Common Array Manager , it's the software provided by Sun "Now Oracle Sun" to manage and monitor StorageTek storage systems. one of the very important thing CAM provide , the ability to collect "support data" , it's what we need when trying to troubleshoot a warning or critical alarm in the storage system.
Once; When tried to register the storage on the CAM to be able to read the alarms, the CAM could never find it, even new versions, Always when stuck with CAM , try the CLI ( command line interface) , it may be able to find the storage and read its alarms. Save the time of trying to troubleshoot why CAM can not register the array and connect through CLI to find out what's wrong.
In the case I worked on today, The solution at the end was satisfying , I enjoyed turning off more than 30 power switches and enjoyed the silence before switching them on , and It's solved and I could see it on CAM, and collect support data.
Note: when powering off a storagetek , the Controller tray is the first to switch off and the last to switch on
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