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All my 3 - 9+ year old hdd's are dying now one by one. I have around 2 x 500GB hdd [1 TB] + 5 x 1TB hdd [5TB] + 2 x 1.5 TB [3 TB] + 2 x 2TB hdd [4TB] + 2 x 3TB hdd [6TB] + 1 x 4TB hdd. [4TB] Total : 23TB All of them are completely full. There are some folders duplicated in 1 or two drives...