Managing Archival Files & High-Resolution Images
CONTENTdm provides an Archival File Manager that handles the storage of files in archive volumes. If it is enabled on the server, any file imported into the CONTENTdm collection using the Project Client is copied to the specified storage (volume) location, and the file is cataloged in a manifest file (manifest.txt), which is stored in each volume location. The storage location and volume naming are specified by your administrator.
Archival files can be any file type, including high- (or full) resolution images. High-resolution images are very large and are either uncompressed or minimally compressed. When working with high-resolution images, you have the option to set whether you want to automatically generate display-quality versions of images when full resolution images are added. You can also determine the display image format (JPEG or JPEG2000), quality and compression settings by editing Images & Thumbnails settings in the Project Settings Manager before you add the files. Display images optimize the end-user display, and you can use the Archival File Manager to handle the storage of full resolution versions of those images (i.e., to set up and manage archive volume locations). You can add high-resolution files to your project using the same methods used for other items. For more information, see Adding Items and Objects.
If Archival File Manager and display image settings are enabled, CONTENTdm keeps track of three versions of your images: 1) full resolution, 2) display, and 3) thumbnail. The thumbnail and display images reside on the server. The full resolution image can reside on the server or be stored offline depending on organizational policies and the process established by your administrator.
The manifest file (manifest.txt) can be useful for logging information about files stored in your archive or copied to storage media. The manifest file is required for items to be imported into the OCLC Digital Archive, a service that stores master files and digital originals in a secure, managed and separate environment. For more information, see the Digital Archive Getting Started Guide (PDF).
You can edit Archival File Manager settings if you have rights to configure settings and field properties in CONTENTdm Administration.