Helping a client set-up their Atlassian server suite. My company is cloud based, so we're less familiar with the server set up. At any rate, they're trying to figure out how many pages they'll need to accommodate for if they're sharing project documents in Confluence. They're long term plan is to use Atlassian connectors from the marketplace to connect to their Office365 products that already exist. So the main usage for now will be to link Confluence pages to JIRA issues.
So if they're not planning to attach documents to a page or use Confluence as a versioned file repository, what is the best way to determine storage needs?