Using the ITU-R 601 4:2:2 digital coding standard, each picture occupies a large amount of storage space, especially when related to computer storage devices such as DRAM and disks. So much so that the numbers can become confusing unless a few benchmark statistics are remembered. Fortunately, the units of mega, giga, tera, and penta make it easy to express the very large numbers involved. The capacities can all be worked out directly from the 601 standard. Bear in mind that sync words and blanking can be regenerated and added at the output, only the active picture area need be stored.