update SSD capacity requirements

pages/builders/node-operators/tutorials/mainnet.mdx

@@ -23,9 +23,18 @@ Archive nodes generally require significantly more resources than full nodes.
 Below are suggested minimum hardware requirements for each type of node.
 
 *   16GB RAM
-*   1TB SSD (full node) or 4TB SSD (archive node)
 *   Reasonably modern CPU
 
+### SSD Capacity Requirements
+
+Given the growing size of the blockchain state, choosing the right SSD size is important.
+Below are the storage needs as of April 2024:
+
+*   **Full Node:** The snapshot size for a full node is approximately 1.6TB, with the data directory's capacity increasing by about 1TB every six months.
+*   **Archive Node:** The snapshot size for an archive node is approximately 5TB, with the data directory's capacity increasing by about 3TB every six months.
+
+Based on these trends, node operators should plan for future storage needs and choose SSDs that can handle these increasing requirements.
+
 ## Full Nodes
 
 ### Assess Blob Archiver