How much data do you have on the disk for that satellite accordingly the OS?
See the folder name there: Satellite info (Address, ID, Blobs folder, Hex).
Also, it could be useful to replace "\sused-space" to "used-space" to see how much pieces it’s scanned.
It’s an INFO messages from storagenode-updater, it uses the same config file as a node, but complains that some keys are unknown to it. These INFO messages can be safely ignored.