'scrubbing' is just a fancy way of saying that the files are read from media, checksums recomputed, and compared against stored checksums. If checksums are different and data was stored redundantly, then recovery is carried out, and correct data is written back to media.
I'm too lazy and don't really do it with my multiple DVD, CDs and HDD backup directories. But ideally, I should be doing it. My startup will make this sort of thing easy and automatic.
I'm too lazy and don't really do it with my multiple DVD, CDs and HDD backup directories. But ideally, I should be doing it. My startup will make this sort of thing easy and automatic.