Recommend Node Sizing requirements for Jira Data Center

[Sysaccount]

Hi,

We are planning to migrate from Jira cloud to Jira data center. 

Please recommend the node sizing requirements(listed in system requirements) we need based on the Metrics we have(Please keep in mind some these metrics might increase in future) :

Issue - 300,000

projects - ~300

Users - 2000

Custom fields - 280

Workflows - 150

Groups - 2500

Comments - 400,000

Permission schemes - 30

Issue security schemes - 70

System requirements

1) System memory ? 2) JVM Heap Size ? 3) App Install Dir ? 4) Backups ? 5) Attachments ? 6)Application logs ? 7) Total disk space? 8) Database Size?

Thanks in Advance!

[Sid]

https://confluence.atlassian.com/enterprise/jira-data-center-size-profiles-955171062.html

https://confluence.atlassian.com/enterprise/jira-sizing-guide-461504623.html