user255: As a follow-up to this questions
Say, I have a SSD of 2TB, which of the two nodes do I have to connect it to? BP or Relay Node?

user1142: Both nodes need to download the Cardano blockchain and therefore both nodes need some disk space. Currently the space needed is ~25GB.

user50: The following graph shows the growth of the DB folder during last 100 days

It grew from 7 to 10.5 GB
In addition it depends on your logging settings and retention policy how much additional space is needed.

255: <p>As a follow-up to this <a href="https://cardano.stackexchange.com/questions/529/relay-node-vs-block-producer-node">questions</a></p>
<p>Say, I have a SSD of 2TB, which of the two nodes do I have to connect it to? BP or Relay Node?</p>
 1142: <p>Both nodes need to download the Cardano blockchain and therefore both nodes need some disk space. Currently the space needed is ~25GB.</p>
 50: <p>The following graph shows the growth of the DB folder during last 100 days
<img src="https://i.stack.imgur.com/TxG7D.jpg" alt="enter image description here" /></p>
<p>It grew from 7 to 10.5 GB
In addition it depends on your logging settings and retention policy how much additional space is needed.</p>
