Samsung SRN-4000 User Manual page 122

setup viewer
Channel Setup
You can configure the video settings for each channel.
Storage device
You can check and change the settings related to the data storage device.
device/format
You can check a storage device, amount of use, type of use
and status of storage device.
iSCSi
If you connect NVR with an iSCSI device, you can search,
connect or disconnect the iSCSI device.
122_ setup viewer