I honestly don’t know. User activity levels vary substantially, there are different kinds of notes beyond just short and long text, and a single black swan event such as “Reply Guy” or even a misbehaving client can drastically change the outcome. Maybe folks running WoT relays, such as Utxo and nostr:nprofile1qqsrl7kr5my9n6423nwaktrsq2nwzzenal4e95p9k9826mu294jkv4cpr4mhxue69uhksctkv4hzuemfwf5kumewdaexwtm0w46xymmcqydhwumn8ghj76rpwejkutn8d9exjmn09ehhyee0vd5xzaqpremhxue69uhksctkv4hrytn8d9exjmn09ehhyee0da6hgcn00qzf4t0k can give you a better idea.
For a single user, you can store all your notes on a Raspberry Pi.
For 500 users, storage needs remain modest, around 2 GB per year.
The main limitation of a Raspberry Pi is disk performance. High loads often occur due to I/O wait times. To achieve reliable performance, use a Raspberry Pi 5 with a PCIe NVMe adapter and NVMe drive. With a 100 GB NVMe disk, you could realistically run a full public relay.
Thank you! That's really useful info.
