= Bit storage =
== IT bit storage offers: ==
 * Three copies - one disk, two tape
 * Monthly checks of disk-copy
 * Checks every three year on tape copies while rewriting. Note: Tapes guarantee 15 years.
  * Possibly we could raise checks to once every year. Must find out what requirements are.
=== Access ===
 * We can access the files through HTTP. IT will host the apache
 * URL will be of type {{{https://storage.statsbiblioteket.dk/<<storagetype>>/<<fileid>>}}}
  * {{{<<storagetype>>}}} is the general storage collection the file belongs to
  * {{{<<fileid>>}}} may contain 'directories' with / delimiter
 * We can implement authorization with an e-ticket in a cookie
 * The Apache server will support HTTP/1.1, including asking for partial files
 * We can get access to the MD5 checksum for stored files
 * Files are available from disk storage, giving fast access times
 * It will also be possible to have read-only shell access to files on rigel, if needed.
=== Store ===
 * A script currently available to 'Statens Arkiver' can be extended to be used for us to store files
 * We will give a directory/file and a storage location, and we will get an MD5 checksum back. When we acknowledge the checksum, the file is then read-only
 * It will be possible to have storage areas with different bitstorage guarantees: 1 tape copy, 2 tape copies