diff --git a/cluster/aws/options.md b/cluster/aws/options.md
index 6b519966778..b915abef691 100644
--- a/cluster/aws/options.md
+++ b/cluster/aws/options.md
@@ -38,6 +38,10 @@ export MASTER_SIZE=c4.large
 export MINION_SIZE=r3.large
 ```
 
+Please note: `kube-up` utilizes ephemeral storage available on instances for docker storage. EBS-only instance types do not
+support ephemeral storage and will default to docker storage on the root disk which is usually only 8GB.
+EBS-only instance types include `t2`, `c4`, and `m4`.
+
 **KUBE_ENABLE_MINION_PUBLIC_IP**
 
 Should a public IP automatically assigned to the minions? "true" or "false"