Unfortunately, what usually happens is that the replacement of malfunctioning drives is
very low on the priority list. A bad drive may wait several days or even weeks to be replaced. This means that if drives fail too often, their failure can significantly
affect the overall integrity of the backup system. That is, drives could fail so often that a large backup or restore would not have enough drives available to complete
within a reasonable time frame. This is why drive reliability is a very important factor in deciding what backup drive to get