---
title: 9.4.3.4 Data Repository Cell Properties
description: "# Step 7: Configure CRC Cell properties In order for the Ontology cell to communication with the File Repository cell the following properties need to be modified to reflect you environment. 1. In the **ontology.properties** file scroll to the section…"
url: "https://i2b2.org/docs/9-4-3-4-data-repository-cell-properties/"
updated: "2026-09-15"
category: "i2b2 Installation Guide / Chapter 4. Server Install Guide / B. Legacy Approach - Build Each Cell from Source / Chapter 9. Ontology Management (ONT) Cell Install / 9.4 Configuration / 9.4.3 Configure the Ontology Properties"
---

# 9.4.3.4 Data Repository Cell Properties

#

Step 7: Configure CRC Cell properties

In order for the Ontology cell to communication with the File Repository cell the following properties need to be modified to reflect you environment.

1. In the **ontology.properties** file scroll to the section called **CRC Cell**.

2. Edit the edu.harvard.i2b2.ontology.ws.crc.url property to reflect the location of the Data Repository cell in your environment.

Important

When you edit the **edu.harvard.i2b2.ontology.ws.crc.url** property it is ***extremely important*** that you only edit the **hostname** (*localhost*) and the **port** (*9090*). The remainder of the URL is required and should not be changed.

  **CRC Cell**

edu.harvard.i2b2.ontology.ws.crc.url=http://*localhost:9090*/i2b2/services/QueryToolService

3. Save your changes but do not close the file. You will be continuing to edit the file in the next few sections.