ed communities require a corresponding change in the hardware technology, when 
changes in ingestion policies require expanded capabilities, and when changes in 
preservation policies require new preservation capabilities. This can be driven by changes in 
capacity requirements (the time needed to read all media is longer than the media lifetime), 
by changes in delivery mechanisms (new clients for displaying authentic records), and 
changes in the number and size of archived records. 
5.1.1.1.2 The reposit