http://sparrowa7io5pz6ud3ehqzosvepbxbxt2zphmkjsylp2zgxooko23pqd.onion/docs/server-performance.html
The Bitcoin blockchain, and any indexes built off of it, are fairly large in data size (currently around 0.5 TB).
For this reason, it is generally recommended to prefer an SSD over a normal HDD for data storage.
This test uses a 1TB external USB SSD. Projects ElectrumX ElectrumX is the second iteration of Electrum server implementations after the original Electrum server project was abandoned in favour of it in 2017.