Data handling capabilities of the deduplication hardware or software maintain a database of hash values – if more than one file is detected having the same hash as the other, the second and later copies of the file will be deleted and replaced with a ‘flag’ or pointer that refers to the original file, with the original hash value.
Organizations – and even many individuals – wind up with duplicate files on their computer disks. In just a few words, what is happening is that exact duplicates are saved – often again and again.
The Blu-ray disc, by virtue of its high capacities (up to 50 GB per disc) today, and future capacities as high as 128 GB make it an ideal medium for archival storage of all types of data.
Many users of optical media learned many years ago about some of the right – and wrong – ways to handle their CDs. Here are guidelines to extend the useful life of your discs.