Enterprise Requirements
=======================

Single-node
-----------

For single-node deployments the following minimum hardware specification
applies:

+-----------------------+-----------------------+-----------------------+
| Component             | Specification         | Notes                 |
+=======================+=======================+=======================+
| CPU                   | 4 core                | amd64 only            |
+-----------------------+-----------------------+-----------------------+
| RAM                   | 16 GiB                |                       |
+-----------------------+-----------------------+-----------------------+
| Root Disk             | 100 GiB of free space | SSD                   |
+-----------------------+-----------------------+-----------------------+
| Control plane network | 1 Gbps                | Mainly localhost only |
|                       |                       | networking so minimal |
|                       |                       | requirement           |
+-----------------------+-----------------------+-----------------------+
| External network      | 1 Gbps                | Optional - only       |
|                       |                       | required for remote   |
|                       |                       | access to instances   |
+-----------------------+-----------------------+-----------------------+
| Storage               | 1 x 100 GiB SSD       | Optional - only       |
|                       |                       | required for block    |
|                       |                       | storage service       |
+-----------------------+-----------------------+-----------------------+

.. note ::
    A single-node deployment has no resilience and has
    limited performance.

.. note ::
   More storage may be required for the root disk, if additional features
   are enabled that require persistent storage.

Multi-node
----------

For multi-node deployments the following minimum hardware specification
applies:

+-----------------------+-----------------------+-----------------------+
| Component             | Specification         | Notes                 |
+=======================+=======================+=======================+
| CPU                   | 16 core               | amd64 only            |
+-----------------------+-----------------------+-----------------------+
| RAM                   | 32 GiB                |                       |
+-----------------------+-----------------------+-----------------------+
| Root Disk             | 500 GiB of free space | SSD                   |
+-----------------------+-----------------------+-----------------------+
| Control plane network | 1 Gbps                | Supports east/west    |
| network               |                       | traffic               |
+-----------------------+-----------------------+-----------------------+
| External network      | 1 Gbps                | Supports north/south  |
|                       |                       | traffic               |
+-----------------------+-----------------------+-----------------------+
| Storage               | 1 x 500 GiB SSD       | Required for block    |
|                       |                       | storage and image     |
|                       |                       | services              |
+-----------------------+-----------------------+-----------------------+

.. note ::
    Three nodes are required for multi-node operation.

Role Based Minimum Memory Sizing
--------------------------------

For multi-node deployments the following minimum component memory sizing may be
used to size each node based on the roles it hosts within the deployment:

+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Component          | Kubernetes | Ceph OSD      | Ceph MON/MGR | Ceph RGW | Control Plane | SunbeamD | Juju Controller | Sunbeam Client |
+====================+============+===============+==============+==========+===============+==========+=================+================+
| Control            | 4 GiB      |               |              |          | 10 GiB        |          |                 |                |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Compute            |            |               |              |          | 1 GiB         |          |                 |                |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Storage            |            | 5 GiB per OSD | 2 GiB        | 2 GiB    |               |          |                 |                |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Cloud              | 4 GiB      | 5 GiB per OSD | 2 GiB        | 2 GiB    | 11 GiB        |          |                 |                |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Sunbeam Controller |            |               |              |          |               | 4 GiB    |                 |                |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Sunbeam Client     |            |               |              |          |               |          |                 | 1 GiB          |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+
| Juju Controller    |            |               |              |          |               |          | 4 GiB           |                |
+--------------------+------------+---------------+--------------+----------+---------------+----------+-----------------+----------------+

.. note ::
    For Ceph components, the scale of the deployment will have an
    impact on the memory footprint for MON/MGR daemons (3 nodes) and more memory and
    cores may be needed per Ceph OSD if using NVMe drives instead of SSD of spinning
    disks.