iVMS-4200 recorded video not searchable with camera off

I noticed that when my Hikvision DS-2CD2332I camera was disconnected from my network, I could no longer search for previously recorded video that was stored via hikvision iVMS-4200 server software. Once the camera was reconnected, the search was possible.

This would mean if someone were to break a camera, the previously recorded video from that camera would no longer be viewable from within the iVMS4200 software.

Now the video would still be on the recorded disks, and there are utilities to view this video, but the filenames just inclease in number, and do not convey the camera, so finding the correct file could be difficult.

are the recordings on an SD card at the camera or on a server?

are the recordings on an SD card at the camera or on a server?

The recordings are on the my PC's disk recorded by the ivms-4200 storage server.