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Disk drive fired 'Frisbees of death' across data centre after storage admin crossed his wires

Joe 35

I had something similar in the mid 80's with reversed wires though much less dangerous, i was on site to assist to shut down and then restart a system should there be problems, after the electricity board had done some work outside which necessitated shutting off all electricity to the building.

When power came back on, the machine looked good, lights came on, but it wouldn't boot from disk (similar type of 50Mb multi platter disks) even though it was spinning.

After some investigation it seemed the electricity board had swapped two of the three phases outside the building somewhere since the disks were spinning backwards ! Fix was to reverse the wiring inside the disk cabinets !

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