 when changes in software 
technology require new format migration capabilities. This can be driven by changes in 
access requirements (new clients that require new data formats become preferred), by 
AUDIT AND CERTIFICATION OF TRUSTWORTHY DIGITAL REPOSITORIES 
CCSDS 652.0-M-1 
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September 2011 
changes in delivery mechanisms (new data transfer mechanisms), and changes in the number 
and size of archived records that require more scalable software. 
5.1.1.1.6 The repository shall have procedures in 