ISS has a Backup service module, you can use this service and back it up and store the NVR’s HDD separately as replacement HDDs.

– How to configure of ISS

1. Uncheck ‘Overwrite backup data when the disk is full’
When assign HDD storage on Backup service, ‘Overwrite backup data when the disk is full’ should be unchecked so that Overwrite feature stop.

2. Check ‘Notification of Disk Almost Full’ as 90%

3. When setting the backup for the first time, it is recommended to set “first / summary backup or event backup”.
This is due to the network throughput performance and h/w performance limitations of the Recorder.

4. If the HDD is full and needs replacement, as shown in the picture below,
Make a note of the last recorded date/time before replacement, and when you connect a new HDD and reconfigure backup, you can start recording from the time you wrote the note.

5. There is currently no function in ISS that gives an alarm when starting a new HDD recording.