Adding more storage and preserving existing images are two different tasks. A larger disk does not automatically include your old recordings. Therefore, make an advance arrangement beforehand which fragments should remain and how you can open them after the replacement.
Create a list of camera numbers, dates, and time periods. Export important events before the recorder is disconnected. Check the files on a second device and, if necessary, bring the corresponding playback software with you. A file name in a folder alone does not prove that the image is usable.
Have the exact NVR model and current disk data reviewed. The supported capacity, number of disk positions, and any storage arrangement determine which replacement is suitable. A disk that physically fits in the enclosure has not yet been found suitable for the recorder.
Determine whether the old disk goes back to the owner, is temporarily stored, or is removed according to a agreed procedure. Note that placing an old disk in another device is not a guaranteed way to read the images. Leave an unconfirmed initialization or formatting step behind if the data is still needed.
Schedule when the replacement will take place and how long the recording may be interrupted. After assembly, the storage must be correctly recognized and set up by the recorder. Make it clear in advance which actions change data; that is part of the order, not an unexpected notification during the work.
After the upgrade, search for a newly recorded fragment from each relevant channel. Additionally, open the previously created exports. Save the overview of the disk rotation in the system data. This way you will know which period is on the new recorder and which events have been separately saved.
Not automatically. Explicitly agree on which images are exported or transferred and how that is checked.
No. Let compatibility, capacity and storage configuration be set to the exact record model.
