diff --git a/gpdb-doc/dita/best_practices/graphics/spread-mirrors.png b/gpdb-doc/dita/best_practices/graphics/spread-mirrors.png
index ce1060479eb9e7cfbf7ff035482c2cf0fc15a9f2..5e1115226451c52fc578025034a2842c8e865fc0 100644
Binary files a/gpdb-doc/dita/best_practices/graphics/spread-mirrors.png and b/gpdb-doc/dita/best_practices/graphics/spread-mirrors.png differ