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How long can HDD survive without power. I have three Samsung HD103SJ HDDs none of them were powered for few years. I took them from RAID 5 array and all of them were functional. Now I tried to make new RAD 5 array but they are death. All of them.
Im not asking about data retention.
I thought maybe some electrolyte capacitor died or some internal batery that helps actuator arm to get in safe position after sudden power off.