7. Restoring to a point in time
If you wish to restore your data to a point in time before the occurrence of some corruption, for example, virus infection or disk failure, then you can use a Point in Time Restore.
Start the TSM GUI and click the Restore files and directories button. Click the
Point In Time button and enter the date and time in the screen as displayed below
before making your selection of files and directories to restore. Now proceed as with a
normal restore as in the previous section, 6. Restoring selected files and directories.
Note that, because the HFS retains a maximum of only two copies of a file, point in time restores are of
limited use. If you attempt to restore back to a date prior to the earlier copy of a certain file, then you will not
see that file in the restore list. Similarly, if a folder holding a file is backed up twice since that file was backed up,
TSM cannot determine the correct permissions for the folder holding the file and thus does not offer to
restore either the folder or the file within it. A far more reliable way to search all restorable files held is
to click View > [Display active/inactive files] on the standard restore window -
with the option to 'Use a Point in Time date during Restore' left unticked. See further ??.
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