Disk-covering method

The disk-covering method is a way of making sure that data is stored safely and can be retrieved if something goes wrong or if it is needed. It works by saving the same data multiple times in multiple places. Think of each place as a disk - like a record, a hard drive, or a cloud storage service. By "covering" the data with several disks, you make sure that, if one disk has an error or fails, you can still retrieve the data from the other disks. It's like having a backup plan - if one thing doesn't work, you have something else that you can use.