diff --git a/doc/source/draft/admin-guide/prepare_lab.rst b/doc/source/draft/admin-guide/prepare_lab.rst
index d9000b582..69a5cec08 100644
--- a/doc/source/draft/admin-guide/prepare_lab.rst
+++ b/doc/source/draft/admin-guide/prepare_lab.rst
@@ -92,19 +92,19 @@ Install all the requirements on CentOS by running::
 Lab Requirements
 ----------------
 
-+------------+--------------------------------+----------------------+
-| Criteria   | Minimal                        | Recommended          |
-+============+================================+======================+
-| CPU        | 4 core @ 2.4 GHz               | 24 core @ 2.67 GHz   |
-+------------+--------------------------------+----------------------+
-| RAM        | 8 GB                           | 24 GB or more        |
-+------------+--------------------------------+----------------------+
-| HDD        | 2 x 500 GB (7200 rpm)          | 4 x 500 GB (7200 rpm |
-+------------+--------------------------------+----------------------+
-| RAID       | Software RAID-1 (use mdadm as  | Hardware RAID-10     |
-|            | it will improve read           |                      |
-|            | performance almost two times)  |                      |
-+------------+--------------------------------+----------------------+
++------------+--------------------------------+-----------------------+
+| Criteria   | Minimal                        | Recommended           |
++============+================================+=======================+
+| CPU        | 4 core @ 2.4 GHz               | 24 core @ 2.67 GHz    |
++------------+--------------------------------+-----------------------+
+| RAM        | 8 GB                           | 24 GB or more         |
++------------+--------------------------------+-----------------------+
+| HDD        | 2 x 500 GB (7200 rpm)          | 4 x 500 GB (7200 rpm) |
++------------+--------------------------------+-----------------------+
+| RAID       | Software RAID-1 (use mdadm as  | Hardware RAID-10      |
+|            | it will improve read           |                       |
+|            | performance almost two times)  |                       |
++------------+--------------------------------+-----------------------+
 
 `Table: Hardware requirements`