Update README.md

Author: AskAlexSharov

README.md

@@ -30,7 +30,7 @@ The current version is currently based on Go-Ethereum 1.9.24
 System Requirements
 ===================
 
-About 1100 GB of disk: 900GB state, 200GB temp files (can symlink or mount folder `<datadir>/etl-tmp` to another disk)
+Recommend 2Tb drive: 1Tb state, 200GB temp files (can symlink or mount folder `<datadir>/etl-tmp` to another disk). 
 
 RAM: 16GB