{"id":532,"date":"2020-07-16T19:54:46","date_gmt":"2020-07-16T19:54:46","guid":{"rendered":"https:\/\/libraries.mit.edu\/about\/?page_id=532"},"modified":"2020-07-16T19:54:46","modified_gmt":"2020-07-16T19:54:46","slug":"comprehensive-digital-preservation-services-cdps-levels-of-preservation-commitment","status":"publish","type":"page","link":"https:\/\/libraries.mit.edu\/about\/strategic-initiatives\/digital-preservation\/comprehensive-digital-preservation-services-cdps-levels-of-preservation-commitment\/","title":{"rendered":"Comprehensive Digital Preservation Services (CDPS): Levels of Preservation Commitment"},"content":{"rendered":"

See also:<\/strong> Digital Preservation at MIT<\/a><\/p>\n

Levels of preservation commitment<\/h2>\n

Developed by:<\/strong> Nancy McGovern, Director, Digital Preservation with Kari R. Smith, Institute Archivist; updated July 2020 (first draft, November 2017)<\/p>\n

Purpose<\/h2>\n

Assigning levels of commitment to types of information allows digital preservation programs to maximize resources by right-sizing the combination of services and actions needed. Each level has requirements to meet to ensure long-term preservation of the content. Factors like uniqueness, purpose, reproducibility, and investment inform the definition of the levels.<\/p>\n

Digital content examples by level of preservation commitment<\/h2>\n
    \n
  • Level 1:<\/strong> open access articles, locally-stored licensed content, etc.<\/li>\n
  • Level 2:<\/strong> digitized content with only IP Restrictions (not confidential), large video files, etc.<\/li>\n
  • Level 3:<\/strong> open Institute records, special collections content that may have IP restrictions, etc.<\/li>\n
  • Level 4:<\/strong> controlled Institute records, confidential data, and other content that requires special restrictions<\/li>\n
  • Level 5:<\/strong> regulated Institute records (high-risk content dictated by policy or law)<\/li>\n<\/ul>\n

    Figure 1. Characteristics of preservation actions and services by level of preservation commitment<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Preservation Services\/Actions<\/th>\nLevel 1<\/th>\nLevel 2<\/th>\nLevel 3<\/th>\nLevel 4<\/th>\nLevel 5<\/th>\n<\/tr>\n<\/thead>\n
    Preservation Metadata<\/td>\nMinimal\/None<\/td>\nMinimal<\/td>\nFull<\/td>\nFull<\/td>\nFull<\/td>\n<\/tr>\n
    Preservation Formats<\/td>\nMaybe<\/td>\nMaybe<\/td>\nYes<\/td>\nYes<\/td>\nYes<\/td>\n<\/tr>\n
    Preservation Copies (multiple locations)<\/td>\nB + 1X + Offline<\/td>\nB + 1-2X + Offline<\/td>\nB + >=4X + Offline<\/td>\nA+B + >=4X + Offline<\/td>\nA+B + >=4X + Offline<\/td>\n<\/tr>\n
    Preservation Approach<\/td>\nBit<\/td>\nBit<\/td>\nFull<\/td>\nFull<\/td>\nFull<\/td>\n<\/tr>\n
    Open\/Closed<\/td>\nOpen\/Limited<\/td>\n\u00a0Open\/Limited<\/td>\n\u00a0Open\/Limited<\/td>\nClosed<\/td>\nClosed<\/td>\n<\/tr>\n
    Confidential<\/td>\nNo<\/td>\nNo<\/td>\nNo<\/td>\nYes<\/td>\nYes<\/td>\n<\/tr>\n
    Rare\/Unique<\/td>\nNo<\/td>\nNo<\/td>\nYes<\/td>\nYes<\/td>\nYes<\/td>\n<\/tr>\n
    Independence<\/td>\nLow<\/td>\nLow<\/td>\nHigh<\/td>\nHigh<\/td>\nHigh<\/td>\n<\/tr>\n
    Preservation Action Level<\/td>\nLow<\/td>\nLow<\/td>\nMedium<\/td>\nHigh<\/td>\nHigh<\/td>\n<\/tr>\n
    Born Digital (BD)\/Digitized<\/td>\nBoth\/Often PDF<\/td>\nMore Digitized<\/td>\nMore BD<\/td>\nMore BD<\/td>\n\u00a0More BD<\/td>\n<\/tr>\n
    Regulated<\/td>\nNo<\/td>\nNo<\/td>\nNo<\/td>\nNo<\/td>\nYes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Notes about services\/actions in Figure 1<\/span><\/h2>\n
      \n
    • Preservation Metadata:<\/strong> minimal to full (more and better quality) preservation metadata (see PREMIS)<\/li>\n
    • Preservation Formats:<\/strong> Levels 3 – 5 must be able to create preservation formats. Levels 1 & 2 not required.<\/li>\n
    • Copies:<\/strong> A = 1 copy in Location A, B = 1 copy in Location B, X = number of external copies, 1 offline safekept copy<\/li>\n
    • Preservation Approach:<\/strong> full means ongoing access to content; bit means retaining a copy of original bitstream.<\/li>\n
    • Independence:<\/strong> copies function independently. Different locations, Different environments (e.g. operating systems).<\/li>\n
    • Preservation Action Level:<\/strong> Frequency of fixity checking, updates to preservation objects (metadata, formats).<\/li>\n
    • Level 2:<\/strong> More of the content will be digitized. If content is digitized it requires 2 copies, one external.<\/li>\n
    • Level 3:<\/strong> This content is open so has more possible options for preservation including external service providers.<\/li>\n
    • Level 4 & 5:<\/strong> This content requires the highest and most frequent level of ongoing preservation actions.<\/li>\n<\/ul>\n

      Figure 2. Relative quantity of digital content per level of preservation commitment<\/h2>\n

      The figure below shows that as the level of preservation commitment goes from level 1 to level 2, the amount of digital content increases (both in petabytes), but then decreases linearly from level 2 to level 5 (measured in terabytes).<\/p>\n

       <\/p>\n

      \"Figure<\/p>\n","protected":false},"excerpt":{"rendered":"

      See also: Digital Preservation at MIT Levels of preservation commitment Developed by: Nancy McGovern, Director, Digital Preservation with Kari R. Smith, Institute Archivist; updated July 2020 (first draft, November 2017) Purpose Assigning levels of commitment to types of information allows digital preservation programs to maximize resources by right-sizing the combination of services and actions needed. Each level has requirements to meet to ensure long-term preservation of the content. Factors like uniqueness, purpose, reproducibility, and investment inform the definition of the levels. Digital content examples by level of preservation commitment Level 1: open access articles, locally-stored licensed content, etc. Level 2: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":68,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/page.php","meta":{"footnotes":""},"class_list":["post-532","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/pages\/532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/comments?post=532"}],"version-history":[{"count":1,"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/pages\/532\/revisions"}],"predecessor-version":[{"id":534,"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/pages\/532\/revisions\/534"}],"up":[{"embeddable":true,"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/pages\/68"}],"wp:attachment":[{"href":"https:\/\/libraries.mit.edu\/about\/wp-json\/wp\/v2\/media?parent=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}