D-Link DCS-5030L User Manual page 54

Section 3 - Configuration
Recording
Select from 1 to 6 minutes of time for each recording.
Length:
SD Card:
Enter the space in MB that you want to reserve on your SD card
for other recordings. Tick 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.
D-Link DCS-5030L User Manual 54 54