D-Link DCS-5030L User Manual page 42

Section 3 - Configuration
SD Card: Enter the space in MB that you want to reserve on your SD card for other recordings. Check Cyclic if you want to
record over old images as soon as the free space limit is reached.
Test SD Card: Click the Test button after configuring your settings to test your system.
Save Settings:
Click to save your settings.
D-Link DCS-5030L User Manual 42 42