I’ve been doing extensive reading about the Golden Gate release and there are fragmentary reports of the indexing taking days and days. I have no personal experience 'cause I don’t do developer betas any more since I’m no longer developing but I have to admit I’m tempted because this sounds like a lot of fun.
Five days seems excessive, though. Do you have brobdingnagian amounts of old emails? Keep decades of messages forever? 4TB of photos?