All files in the users home directories and in /data areas are automatically backuped every night on the Archiv- und Backupsystem TSM provided by LRZ Muenchen Three versions of every file are kept. Assume you change a file every day: Then you can restore the version of yesterday (called the active version) and the one 2 and 3 days ago (called inactive). If a file is deleted then the backup is kept for half a year. After this it will also disappear from the backup system.
To use the system type:
Use then the item File Level
Never use the (unfortunately default) Restore to original location
since this normally doesnt work. Instead select
Restore to the following location and you will be offered the
correct restore path starting e.g. /home/ha/
Files in data directories are below: export/data
Except:
data/etp6, data/etp7 and
data/ha
and select:
If you want to restore an inactive (e.g. the version of the day before
yesterday) you have to activate
Display activate/inactive files
from the View popup menu before you select the
file to be restored.
Note:
Files in home directories saved before 20.Jun.04 start with:
export/home/
Note:
This difference is a restriction of the backup system when
dealing with NFS mounted systems. This should be simplified eventually
and only the short notation like data/etp6 should remain.
The same system may also be used to archive files for long duration.
These files are kept for 10 years regardless if they exist on
the user home / data directories.
For details consult the
documentation provided by the LRZ.