---
id: single-server
title: "Single server deployment"
---

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Druid includes a set of reference configurations and launch scripts for single-machine deployments:

- `micro-quickstart`
- `small`
- `medium`
- `large`
- `xlarge`

The `micro-quickstart` is sized for small machines like laptops and is intended for quick evaluation use-cases.

The other configurations are intended for general use single-machine deployments. They are sized for hardware roughly based on Amazon's i3 series of EC2 instances.

The startup scripts for these example configurations run a single ZK instance along with the Druid services. You can choose to deploy ZK separately as well.

The example configurations run the Druid Coordinator and Overlord together in a single process using the optional configuration `druid.coordinator.asOverlord.enabled=true`, described in the [Coordinator configuration documentation](../configuration/index.html#coordinator-operation).

While example configurations are provided for very large single machines, at higher scales we recommend running Druid in a [clustered deployment](../tutorials/cluster.md), for fault-tolerance and reduced resource contention.

## Single Server Reference Configurations

Micro-Quickstart: 4 CPU, 16GB RAM
------------
Launch command: `bin/start-micro-quickstart`
Configuration directory: `conf/druid/single-server/micro-quickstart`

Small: 8 CPU, 64GB RAM (~i3.2xlarge)
------------
Launch command: `bin/start-small`
Configuration directory: `conf/druid/single-server/small`

Medium: 16 CPU, 128GB RAM (~i3.4xlarge)
------------
Launch command: `bin/start-medium`
Configuration directory: `conf/druid/single-server/medium`

Large: 32 CPU, 256GB RAM (~i3.8xlarge)
------------
Launch command: `bin/start-large`
Configuration directory: `conf/druid/single-server/large`

X-Large: 64 CPU, 512GB RAM (~i3.16xlarge)
------------
Launch command: `bin/start-xlarge`
Configuration directory: `conf/druid/single-server/xlarge`