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Archiving Data

Important data stored on Minerva can be protected by archiving the data in the IBM Tivoli Storage Management (TSM) system (renamed as Spectrum Proctect after v8.1) installed on a Minerva server.

The TSM system will create two long-term tape copies of your data. One copy will be stored in the IBM tape library that is part of the Minerva complex and be available for rapid recall; the second copy will be stored off-site in a secure data vault for disaster protection. Data on both copies will be encrypted to deter unauthorized access.

Data retention policy

The archived data will have a retention time of 6 years unless other arrangements are made with Minerva operations.


How to access TSM

TSM client or Spectrum Protect client v8.1 is installed on all internal login nodes, i.e., login1,login2, and minerva4. Users can issue archive commands, dsmc of dsmj, from either of the internal login nodes. However, trying to use one of these commands in the exteral login node (i.e., minerva2) will result in a "Command not found." response.

Data that is archived is grouped in the TSM system by nodes. A node is an abstraction and can be physically many things. On Minerva, each user is considered a node to the TSM system and the node identity for each user is the userid.

The TSM system can be accessed via either a GUI or the command line. The command line mode is particularly useful when archiving large datasets in that it can be issued using the screen command. The screen can then be detached and the command can run unattended for the hours it may take to archive the data.

General suggestions

  • Tar small files before archive.
    Because all the files that are archived are entered into a database, to prevent overflowing this database we ask that you first use the tar command to create a unix tar archive of bundles of small files and then archive the tar file to TSM. For information about tar see the man pages ( man tar ) on Minerva or check out this link.
  • Command Line and Screen is recommended for large data archiving or retrieval.
    It is not recommended to use the GUI for large data archiving or retrieval because you would have to keep the interactive session open until all of the data are archived. Instead, start a "screen" session and issue the line command to perform the archiving. You can then detach the screen session and the command will continue executing.
  • Warning: If one specifies that files should be deleted automatically after archive and then subsequently deletes the archive object the data will be permanently lost.

Frequently Asked Questions

For a more extensive discussion of using TSM, see IBM Spectrum Protect Manual

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