Add reading guide for designing Vault clusters (#26947)

website/content/docs/enterprise/cluster-design.mdx

@@ -0,0 +1,50 @@
+---
+layout: docs
+page_title: Vault Enterprise cluster design
+description: >-
+  Instructions and best practices for cluster design with Vault Enterprise.
+---
+
+# Design your Vault Enterprise cluster
+
+@include 'alerts/enterprise-only.mdx'
+
+If you want to implement a robust Vault cluster, you need to understand how
+Vault manages clusters, storage, and replication.
+
+## Before you start 
+
+- **Complete the [HashiCorp Enterprise Academy Onboarding](https://onboarding.hashicorp.com/trainings) for Vault**.
+- **Watch the [Raft consensus demo](https://thesecretlivesofdata.com/raft/) demo**.
+
+## Step 1: Plan your cluster architecture
+
+1. Review the [Integrated storage](/vault/docs/concepts/integrated-storage)
+   overview to learn the basics about Vault integrated storage.
+1. Review the [Vault multi-cluster architecture guide](/well-architected-framework/zero-trust-security/multi-cluster-architecture)
+   to learn the best practices for running multiple Vault clusters.
+1. Review the [Vault Enterprise replication overview](/vault/docs/enterprise/replication)
+   to learn the differences between performance replication and disaster
+   recovery replication.
+1. Review the [Vault with integrated storage reference architecture](/well-architected-framework/zero-trust-security/raft-reference-architecture)
+   guide to learn the best practices for using Vault integrated storage
+   in a zero-trust security posture.
+
+## Step 2: Review anti-patterns for Vault configuration
+
+You can help keep your Vault environments healthy by avoiding established
+anti-patterns.
+
+The Hashicorp Well-architected framework documentation provides in-depth
+[Vault anti-patterns](/vault/docs/concepts/integrated-storage) guidance based on
+lessons learned by customers operating Vault in the field.
+
+## Step 3: Plan for maintenance at scale
+
+The easiest way to run Vault at scale is to manage Vault programmatically with
+Terraform and Sentinel.
+
+1. Review the [Terraform intro](/terraform/intro).
+1. Review the [Programmatic best practices](/well-architected-framework/operational-excellence/operational-excellence-managing-vault-with-terraform)
+   guide to learn about managing Vault through Terraform.
+1. Review the [Vault namespaces recommendations](/vault/tutorials/enterprise/namespace-structure#use-namespaces-sparingly).

website/data/docs-nav-data.json

@@ -2700,6 +2700,10 @@
         "title": "Long-term support (LTS)",
         "path": "enterprise/lts"
       },
+      {
+        "title": "Design your Vault Enterprise cluster",
+        "path": "enterprise/cluster-design"
+      },
       {
         "title": "Replication",
         "routes": [