We're running Windows SBS 2003. The machine is a Dell PowerEdge we bought in 2007. We need capability for 20 to 30 clients. Initially we hosted our own email, but we now use Google Apps. Our file server is about 500GB. We're mostly into automotive engineering. We do a little embedded programming. For backup we use Dropbox and Crash Plan. Our current machine has 2 mirrored hard drives. Do we need that? Or are there better methods for redundancy, crash recovery, etc. Realizing that MS is about to stop supporting the 2003 OS, what would you recommend? I'm hearing that for OS we should probably go with Windows Server 2012. What about equipment? We're looking at the Dell T320. Do we need SQL Server? If so why? Probably I'm not asking all the important questions, but think these are some of them.
Thanks in advance.