I am setting up a network with a Proliant ML350 Server running Server 2008 R2. There will be six desktops. The main programs that will be installed on the server and accessible from the workstations are two line-of-business applications, neither of which will be using SQL Server. There will NOT be Exchange running on the server . In order to maximize on server resources (there are 12GB's of RAM and hard drives in a RAID 5 configuration) I was not going to install Active Directory and set the network up as a Workgroup instead of a Domain.
Are there any drawbacks to this?
Is this the best choice for what I need?