diff --git a/modules/installation-special-config-storage.adoc b/modules/installation-special-config-storage.adoc
index ca12204213..8171258016 100644
--- a/modules/installation-special-config-storage.adoc
+++ b/modules/installation-special-config-storage.adoc
@@ -22,7 +22,12 @@ This feature:
 There are two different supported encryption modes:
 
 * TPM v2: This is the preferred mode. TPM v2 stores passphrases in a secure cryptoprocessor.
-* Tang: To use Tang to encrypt your cluster, you need to use a Tang server. Clevis implements decryption on the client side. Tang encryption mode is only supported for bare metal installs.
+* Tang: To use Tang to encrypt your cluster, you need to use a Tang server. Clevis implements decryption on the client side.
+
+[IMPORTANT]
+====
+The use of Tang encryption mode to encrypt your disks is only supported for bare metal and vSphere installations on user-provisioned infrastructure.
+====
 
 [NOTE]
 ====