> where are they being hosted
I'm hosted my [nostr-rs-relay] nostr.4rs.nl at netcup.com.
> where are the relays storing the data
Relays don't have much data, it's only store json events, the media are stored in different servers called media servers, then you only attach the URL of your media in your note under `imeta` tag, you can learn more from [nip-92].
For example this is your GM note tags
```json
{
"tags": [
[
"imeta",
"url https://m.primal.net/OfaJ.jpg",
"m image/jpeg",
"ox 32db714ca53dd9e31021def06a4c5a55d6620bc1167ab1ba0e8b5844d269fdb4",
"dim 4080x2296"
]
]
}
```
As you can see your image hosted in #primal mediaserver, the clients will take care of you, you only click on "Add image" button. btw, you can specify to your client what media server to use, I don't know if #primal support that or not, but it's exist.
[nostr-rs-relay]: https://github.com/scsibug/nostr-rs-relay
[nip-92]: https://nips.4rs.nl/nips/92/
