My node is currently using 16 GB of RAM for 65 TB used space.
In my case the linux kernel would start killing processes in order to free up some RAM and keep the system running.
On every starup memtable will rebuild. It looks like this in the logs:
2025-08-26T11:12:43+02:00 INFO hashstore hashstore opened successfully {"Process": "storagenode", "satellite": "121RTSDpyNZVcEU84Ticf2L1ntiuUimbWgfATz21tuvgk3vzoA6", "open_time": "621.832683ms"}
2025-08-26T11:12:51+02:00 INFO hashstore hashstore opened successfully {"Process": "storagenode", "satellite": "12EayRS2V1kEsWESU9QMRseFhdxYxKicsiFmxrsLZHeLUtdps3S", "open_time": "8.389304306s"}
2025-08-26T11:12:53+02:00 INFO hashstore hashstore opened successfully {"Process": "storagenode", "satellite": "12L9ZFwhzVpuEKMUNUqkaTLGzwY9G24tbiigLiXpmZWKwmcNDDs", "open_time": "2.138755037s"}
2025-08-26T11:12:53+02:00 INFO hashstore hashstore opened successfully {"Process": "storagenode", "satellite": "1wFTAgs9DP5RSnCqKV1eLf6N9wtk4EAtmN5DpSxcs8EjT69tGE", "open_time": "2.877847ms"}