DW Spectrum User Manual

DW Spectrum creates a database that stores an index which maps the relationship between archive filenames and the physical location of the archive on disk. When a storage device is moved, renamed, or deleted, or when an archive file is removed, renamed, has an incorrect timestamp, or is otherwise corrupted, this index will be broken. Reindexing restores the relationship between the database and storage device(s).

Similarly, if a camera is deleted, its archive remains – but access to its footage is lost. To make such footage available again, the archive must be reindexed. After the archive index is restored, the deleted camera will be displayed in the Resource Tree as an offline device so that it is possible to navigate through its archive. See "Viewing Archive from Deleted Cameras".

When an archive is damaged, users with owner or administrator access will receive a notification when attempting to view that archive. The notification indicates the storage path where the problem was detected.

To Reindex an Archive

1.Do one of the following:

•Desktop Client: Right-click on a server in the Resource Tree, choose Server Settings and go to the Storage Management tab.

•Web Admin / Cloud Portal: Open Settings > Servers and select a server.

2.Click on Reindex Archive to restore the index for all Main storage locations. Click Reindex Backup to restore the index for all Backup storage locations.

3.A message will open with the warning "Hard disk load will increase significantly". Depending on the size of the archive, reindexing can take up to several hours. The System will continue recording while the archive is being reindexed but performance may be affected.

4.Click OK to continue. When the window closes, reindexing will to run in background. A progress bar will indicate status, and you will see a message when reindexing is either complete or has been canceled.

 Note: Reindexing can be canceled at any point, which will trigger the "Reindexing Archive Canceled" event. However, an incompletely indexed archive may be partially or entirely inaccessible. It is strongly recommended that the archive reindex process be completed. 

5.When reindexing is complete, a "Reindexing Archive Complete" event is triggered.

To protect against the possibility of complete loss or removal, archives can be saved to one or more backup storage locations. See "Configuring Backup and Redundant Storage".