Have a 10.6.8 Xserve Server that is currently hosting the below services. AFP, DHCP, DNS, FIREWALL, ICHAT, MAIL, NAT, OPEN DIRECTORY, VPN AND WEB SERVICE. I'm considering upgrading to 10.9 with the Server App. I love this forum and would like to get any feedback. My major reason to do so is to make sure I'm up to date with security patches cause we do run credit cards for business on its network and I have to be PCI Compliant. I'm nervous about the upgrade path. Have 50 users worth of emails and settings I can not afford to mess up. Thanks everyone.