To avoid a bottleneck on the Archiver or Auxiliary Archiver due to disk throughput, you
    can enable the role to write simultaneously to multiple disks.
      What you should know
         The Archiver and Auxiliary Archiver roles can write to multiple disks by spreading the
            video archive over several 
disk groups. Each disk group must correspond to a
            separate disk controller. By splitting the video archive from different cameras over
            different disk groups, you can maximize throughput in terms of disk access.
CAUTION: Nothing prevents other applications from using the disk space set
               aside for the Archiver or Auxiliary Archiver, so it is recommended to assign a disk
               that is not shared with other applications to these roles. In cases where multiple
               Archivers share the same server, use a separate disk for each.
To distribute the archiving cameras over multiple disk groups:
- 
        From the Config
                                    Tool home page, open the
            Video task.
      
- 
            Select the Archiver role, and click the Resources tab.
         
- 
            To create a disk group, click Add group ( ). ).
- 
            In the Disk group column, click New disk
                  group and type a name for the group.
         
- 
            Click Camera distribution ( ). ).
- 
            In the Camera distribution dialog box, divide the cameras
               between the disk groups by selecting them one at a time and moving them with the
               arrow buttons.
         
- 
            Click .