Step 1 From main menu->Setup->Storage->Advanced->HDD.
Enter HDD interface. See Figure 5-108.
Figure 5-108
Step 2 Set a HDD group for current HDD.
Click OK. Device begins reboot.
Step 3 After set HDD group, click main stream/sub stream/snapshot tab to save main
stream, sub stream, snapshot image to different HDD group. See Figure 5-109,
Figure 5-110, Figure 5-111
Figure 5-109
Figure 5-110