we're going to upgrade jira and also want to keep the old version running at the same time.
I'd like to create a new instance within the same machine but different port to test the upgrade.
We're using the file system to store the attachments (a folder which is outside jira home directory).
My question is - the two instances (one with the old version, the other is the new version), can they be both running at the same time and point to the same attachments directory?
thanks