diff --git a/存储/ceph/base.md b/存储/ceph/base.md
index 3a4c391..545377e 100644
--- a/存储/ceph/base.md
+++ b/存储/ceph/base.md
@@ -1,5 +1,5 @@
 ### 模块
-RBD(rados): 核心,存储  
+OSD(rados): 核心,存储  
 MON: 监控(奇数个)  
 RGW(radosgw): 对象存储需要  
 MDS: 文件存储需要