Insight is an add on to JIRA so you need to make sure JIRA is configured to handle the amount of data you plan to manage into Insight. We recommend you to read this article from Atlassian about how to setup JIRA and recommended hardware requirements:
When managing large amount of data we recommend this amount of memory to be configured:
| Hosts | JVM Memory |
|---|---|
| 0-500 | 4Gb |
| 501-1000 | 8Gb |
| 1000-4000 | 16Gb |
| 4000-8000 | 32Gb |
| 8000-* | 64Gb |