Task: Text Categorization
Input (English): An archaic form of this resource was implemented by Bell Labs using a piggyback twistor. A more recent form of this resource that was created using chalcogenide glass is named for the property of phase-changes. The access latency for this resource can be reduced by using a translation-lookaside buffer, as one can avoid looking up things in a page table entry. A redundant organization of this resource is performed by (*) RAID. The top of a "hierarchy" of this resource contains processor registers and cache. It can be divided into volatile and non-volatile, the latter of which includes hard drives. For 10 points, name this resource that is used for data storage, an example of which is RAM.
Output (English): Science