At present, one DVD can store 4.7 gigabytes of data. If the pits in the disc surface that represent the data could be greatly reduced in size, it is estimated that in future we could reach terabyte units, or 200 times today's capacities.
目前一片 DVD 的儲存量是四・七個 Giga bytes，若是儲存點能大幅縮小，估計未來將可達到以兆位元為單位，容量是現在的二百多倍。