Reindexing an Archive in DW Spectrum
Affected Roles: Administrator, Owner
Related Digital Watchdog VMS Apps: DW Spectrum IPVMS
Software Version: DW Spectrum v4.2 or newer
Last Edit: March 3, 2022
When a DW Spectrum System is created, a database is created for its server(s) to store and index the mapping and relationship between the archive filenames and the storage location of the archive in the physical storage drive of the server(s). Reindexing a database will restore the relationship between the database and the storage drive.
The process can take up to several hours, but the duration varies depending on the size of the archive storage files. The DW Spectrum System will continue to record video and will write to the archive, even while the reindex process is ongoing. As long as there is still enough storage capacity available to perform both the reindex and record video, the system can perform both simultaneously. However, performance may be affected as more processing power will be required from the server computer’s resources.
This article will outline how to reindex an archive and additional information regarding this function.
Reindexing an archive should be performed when the archive index (that helps the system recognize stored archive files) is broken or corrupted. This can occur when:
If an archive is damaged, DW Spectrum will notify the administrators of the system when attempting to view that section of the archive. This notification will indicate the storage path where the indexing problem has been detected.
When a camera is deleted from the DW Spectrum Resource Tree, its archive will remain within the DW Spectrum Servers storage, but access to the footage will be lost. After reindexing the archive, the DW Spectrum Client will display the deleted camera in the Resource Tree again, but as an offline device. While live video will not be possible for the once deleted camera, access to its archived video files will be recovered and made available for viewing once again.
A fast archive scan checks to see that the database is intact and that it matches the archive. This process usually only takes a few seconds and occurs automatically when:
During a fast scan, video recording will be temporarily put on hold, but will resume after the process has completed. This process usually only takes a few seconds, but may experience delays when:
The Server Settings window will display. Select the “Storage Management” tab.
Click the “OK” button in the pop-up to proceed with the reindexing.
A progress bar will display to indicate the current status throughout the process. DW Spectrum will indicate that the reindexing process has completed or stopped when: