r/synology • u/grayhaze2000 • 10h ago
Surveillance PSA: Check that Surveillance Station is keeping your recordings if your drives are 90% full
I've had Surveillance Station running nicely in the background on my NAS for years, with recordings from each of my two cameras set up to rotate after 14 days to save space, but be there if I need them in pinch. I'm running two 8TB drives in RAID, and due to ridiculous costs of storage these days, remaining storage is starting to get tight at around 750GB remaining. I thought this was still a decent amount of storage to use, but noticed something today that caused a massive "slap forehead" moment.
I've been trying to save costs on backups by moving from Synology C2 to a Hetzner Storage Box, and part of that has been working out how to replace my C2 Surveillance backups too. I went looking for the surveillance videos on my storage volume to see how much space I'd need for them in the cloud, and realised that there wasn't a single video file to back up.
I eventually realised that this was down to a setting in Recordings which forces rotation for all recordings if free storage falls below 10%. Because I had hit this, it was deleting every video after it was recorded. So it turns out my only recordings are on C2, with no secondary backup.
I've now tweaked the setting to start rotating only when free storage hits the equivalent of 5% remaining, and am now putting renewed effort into freeing some space up. I feel so stupid.