diff --git a/README.md b/README.md
index 1d132b4..7632aa9 100644
--- a/README.md
+++ b/README.md
@@ -7609,6 +7609,14 @@ https://idiallo.com/blog/c10k-2016
 <summary>What types of storage devices are there?</summary><br><b>
 </b></details>
 
+<details>
+<summary>Explain IOPS</summary><br><b>
+</b></details>
+
+<details>
+<summary>Explain storage throughput</summary><br><b>
+</b></details>
+
 <details>
 <summary>What is a filesystem?</summary><br><b>
 </b></details>