# Example Cluster Deployment

In this example cluster, each host box consists of:

- 4 vCPU
- 16 GB memory
- 20 GB OS boot disk
- 250 GB data disk (deployed to `/dev/sdb`)
- 3 network interfaces for management, storage, and compute traffic (set to `eth0`, `eth1`, and `eth2`, respectively, in this example. Your environment may differ.)

NOTE

250 GB data disks used in this example are simply for demonstration purposes. A typical test cluster should consist of at least 500 GB storage and more will be required for production. Do not raid disks on physical servers. Multiple disks may be specified per host by giving a comma-separated list (ex. /dev/sda,/dev/sdb,/dev/sdc,etc.) in the DATA DEVICE field during cluster setup. These along with disks from all other nodes will be added to the total storage, which is presented as one large volume.

HVM clusters must also live in Private Cloud-type Clouds (See Infrastructure > Clouds). A pre-existing Cloud may be used or a new Cloud could be created to house HVM clusters.
