diff --git a/storage/journal/src/main/java/io/atomix/storage/journal/SegmentedJournal.java b/storage/journal/src/main/java/io/atomix/storage/journal/SegmentedJournal.java
index <HASH>..<HASH> 100644
--- a/storage/journal/src/main/java/io/atomix/storage/journal/SegmentedJournal.java
+++ b/storage/journal/src/main/java/io/atomix/storage/journal/SegmentedJournal.java
@@ -53,7 +53,7 @@ public class SegmentedJournal<E> implements Journal<E> {
     return new Builder<>();
   }
 
-  private static final int DEFAULT_BUFFER_SIZE = 1024 * 1024;
+  private static final int DEFAULT_BUFFER_SIZE = 1024 * 64;
 
   private final Logger log = LoggerFactory.getLogger(getClass());
   private final String name;
Reduce the amount of disk allocated when rolling over to a new segment in the SegmentedJournal