--- ./source/private_module/lun_ctrl/master_agent/obj_lun_cfg.c	2018-04-21 09:08:09.000000000 +0000
+++ ./source/private_module/lun_ctrl/master_agent/obj_lun_cfg.c.hotpatch	2019-03-20 03:10:49.000000000 +0000
@@ -20555,7 +20555,7 @@
 
     if (!isPoolHasNLTier)
     {
-        *grainSize = VIRTUAL_GRAIN_SIZE_8K;
+        *grainSize = VIRTUAL_GRAIN_SIZE_16K;
     }
 
     return RETURN_OK;
