Now this has happened again.
Last time this happened i took the disk out. Put it in another computer, deleted the partition, set up NTFS partition, Checked the disk with the Seagate tool (took over a day), installed it again in my unraid machine, changed the power supply, new sata cable, did the "clean new disk" or whatever it is called and had it do a read and write scan and that took almost two days and everything turned out fine and no errors, put the disk in the raid again and everything worked fine for a while.
This time i lost a lot of data so this is getting very frustrating.
Smart is fine, the disk always is fine, the only thing is that once in a while the disk registers as Bad in the raid and can not be used until the partition has been deleted and unraid gets to make a new one.
Has anyone here seen anything like this or does anyone have any ideas what i could check out next ?