.. _sysreqs_sample_target_node_config_storage:

Storage nodes
-------------

We recommend that you separate Ceph nodes for scalability and robustness.
The hardware estimate provided below is based on the requirement of 0.5 cores
per Ceph-OSD CPU and 1 GB of RAM per 1 TB of Ceph-OSD space. You can configure
all Ceph storage and journal hard disks in JBOD (Just a Bunch of Disks) mode
on the RAID controller or plug them directly to the available SATA or SAS ports
on the mainboard.

Each storage node must include:

+------------------------+---------------------------------+
| CPU                    | Single-socket CPU with at least |
|                        | 4 physical cores                |
+------------------------+---------------------------------+
| RAM                    | 24 GB                           |
+------------------------+---------------------------------+
| Storage                | RAID 1 controller with at least |
|                        | 500 GB capacity for the host    |
|                        | operating system disk           |
|                        |                                 |
|                        | For production installations,   |
|                        | set the Ceph object replication |
|                        | factor to 3 or greater.         |
+------------------------+---------------------------------+
| Network                | * For testing: 2 x 1 Gbit/s NICs|
|                        | * For production: 2 x 10 Gbit/s |
|                        |   NICs                          |
+------------------------+---------------------------------+
| Storage                | * 18 TB for Ceph storage        |
|                        |   (6 x 3 TB)                    |
|                        | * 1-2 x 64 GB SSDs or more, for |
|                        |   the Ceph journal              |
+------------------------+---------------------------------+