For the efficient work of the Elastic Search module, installation of the Elastic Engine is required. Elastic Engine is the core component that proves a fast and relevant search process.
As a common practice, the engine is installed and configured on the same server where Magento is nested. Though, it can be installed on a separate server for greater performance. Elastic Search deals with a great amount of data that requires additional memory resources. If you're running a large store or several ones and use Elastic Search on all of them, installing the engine on a separate server is reasonable as the lack of memory might cause the engine to stop. Without the engine, or when it’s unavailable, searches cannot be performed correctly.
If you decide to install the engine on a separate server, the installation process will be the same. The only thing you’d need to take care of is to fill in the data properly, check the connection with the engine, and run indexation. The connection can be set in Stores → Configuration → Amasty Extensions → Elastic Search → Connection:
Our team will be glad to help you with the Elasticsearch Engine installation if needed. Please visit the service’s info page to check the prices and other details.