No. The hard drive data remains intact. However, settings like motion detection zones, schedules, and network config may revert to defaults – always export backup.
Approximately 2–3 times per year for critical updates, but the S3/H variant is mature (2021–2024), so updates may slow down. dhi-nvr1108hs-8p-s3 h firmware
No. The DHI-NVR1108HS-8P-S3/H only supports USB or local web upload for firmware updates. settings like motion detection zones
There is a well-known user portal that archives Dahua firmware. dhi-nvr1108hs-8p-s3 h firmware
: 1 × SATA 2.0/3.0 Port supporting up to 8TB hard drives
If your NVR is connected to the internet, go to Main Menu > System > Upgrade and click Manual Check . If a new version is available on Dahua's servers, it will prompt you to download and install it immediately.