diff --git a/dual-master/README.md b/dual-master/README.md
index 7c5cfe4..09fbf03 100644
--- a/dual-master/README.md
+++ b/dual-master/README.md
@@ -33,7 +33,15 @@
 * EBS volumes for:
   * Indexes
   * Caches
-  * Data
+  * Logs
+* EFS volume:
+  * Share Git repositories between masters
+  * Share Web sessions between masters
+
+*NOTE*: This stack uses EFS in provisioned mode, which is a better setting for large repos
+(> 1GB uncompressed) since it provides a lower latency compared to the burst mode.
+However, it has some [costs associated](https://aws.amazon.com/efs/pricing/).
+If you are dealing with small repos, you can switch to burst mode.
 
 ### Deployment type
 
diff --git a/dual-master/cf-cluster.yml b/dual-master/cf-cluster.yml
index 49530ce..411c369 100644
--- a/dual-master/cf-cluster.yml
+++ b/dual-master/cf-cluster.yml
@@ -280,6 +280,8 @@
   FileSystem:
     Type: AWS::EFS::FileSystem
     Properties:
+      ThroughputMode: provisioned
+      ProvisionedThroughputInMibps: 1024
       FileSystemTags:
         - Key: Name
           Value: "multi-master-git-repo"