---
alias: system-requirements-persistency-layer-index
description: "This documentation outlines the components needed for the system’s data persistence layer"
---

# Data Storage

This section describes the components that make up the persistency layer of a Critical Manufacturing MES installation. Requirements vary depending on how each component is used.

## Databases

* [SQL Server](database-component/index.md)
* [ClickHouse](external-components/clickhouse-data-platform.md)

## Messaging

* [Kafka](external-components/kafka.md)
* [RabbitMQ](external-components/rabbit-mq.md)

## Storage

* [AWS S3 (or compatible)](external-components/s3.md)