diff --git a/images/merlin-slurm-architecture.png b/images/merlin-slurm-architecture.png
index d004c51..38e44a8 100644
Binary files a/images/merlin-slurm-architecture.png and b/images/merlin-slurm-architecture.png differ
diff --git a/pages/merlin6/01-Quick-Start-Guide/introduction.md b/pages/merlin6/01-Quick-Start-Guide/introduction.md
index 88fbd9f..393836a 100644
--- a/pages/merlin6/01-Quick-Start-Guide/introduction.md
+++ b/pages/merlin6/01-Quick-Start-Guide/introduction.md
@@ -16,7 +16,18 @@ redirect_from:
 Historically, the local HPC clusters at PSI were named **Merlin**. Over the years,
 multiple generations of Merlin have been deployed.
 
-At present, the **Merlin local HPC cluster** contains _two_ generations of it: the old **Merlin5** cluster and the newest **Merlin6**.
+At present, the **Merlin local HPC cluster** contains _two_ generations of it: 
+* the old **Merlin5** cluster (`merlin5` Slurm cluster), and
+* the newest generation **Merlin6**, which is divided in two Slurm clusters:
+   * `merlin6` as the Slurm CPU cluster 
+   * `gmerlin6` as the Slurm GPU cluster.
+
+Access to the different Slurm clusters is possible from the [**Merlin login nodes**](/merlin6/interactive.html),
+which can be accessed through the [SSH protocol](/merlin6/interactive.html#ssh-access) or the [NoMachine (NX) service](/merlin6/nomachine.html).
+
+The following image shows the Slurm architecture design for the Merlin5 & Merlin6 (CPU & GPU) clusters:
+
+![Merlin6 Slurm Architecture Design]({{ "/images/merlin-slurm-architecture.png" }})
 
 ### Merlin6
 
@@ -51,15 +62,3 @@ The old Slurm **CPU** *merlin* cluster is still active and is maintained in a be
 **Merlin5** only contains **computing nodes** resources in a dedicated **[Slurm](https://slurm.schedmd.com/overview.html)** cluster.
 * The Merlin5 CPU cluster is called [**merlin5**](/merlin5/slurm-configuration.html).
 
-## Merlin Architecture
-
-The following image shows the Slurm architecture design for the Merlin5 & Merlin6 clusters:
-
-![Merlin6 Slurm Architecture Design]({{ "/images/merlin-slurm-architecture.png" }})
-
-### Merlin6 Architecture Diagram
-
-The following image shows the Merlin6 cluster architecture diagram:
-
-![Merlin6 Architecture Diagram]({{ "/images/merlinschema3.png" }})
-