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.

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.

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