diff --git a/source/administration/production-checklist-operations.txt b/source/administration/production-checklist-operations.txt
index f7143f5fa9a..38ac0e8f325 100644
--- a/source/administration/production-checklist-operations.txt
+++ b/source/administration/production-checklist-operations.txt
@@ -249,6 +249,8 @@ Windows
 
    - Consider disabling NTFS "last access time"  updates. This is 
      analogous to disabling ``atime`` on Unix-like systems.
+   - Format NTFS disks using the default 
+     :guilabel:`Allocation unit size` of `4096 bytes <https://support.microsoft.com/en-us/help/140365/default-cluster-size-for-ntfs-fat-and-exfat>`__.
 
 Backups
 ~~~~~~~