I have a Thecus N8800+ NAS. It has 8 2TB drives and is RAID 6. One of the drives recently has been reported as having bad blocks, though the RAID is still reported as healthy.
I want to replace the drive before it fails, but I have never administered a NAS before. How do I replace the drive and maintain data integrity? Can I just pull out the drive and replace it while things are running or do I need to shut it down somehow? How will the RAID rebuild after I replace the drive?