If you are the IT Pro...what's a server?
No, seriously...what is a server? I would hope that you would say that it's an operating system that 'at least' had the name 'Server' in it and not XP Pro used in a peer setting. I would hope that you would say something that specifically was tuned and optimized to be a server.
If you are the business owner...what is a server?
No, seriously... put your business owner hat on and put aside the geek propeller head hat. What is your view of the server? It's Outlook isn't it? Or it's the shared file storage of Excel. Or it's the business app you are using like CRM. They have no idea, no care of what the 'plumbing' is used to do the job. They just want it so that when they go to turn on the water that the water indeed comes out. It's as simple as that.
It's YOUR job as the propeller head to spec out the plumbing.
Used to be that we only looked at SCSI drives for servers. Raid 5 this. Raid 10 that. Now we're using SATA drives. I personally thing the hardware side is the harder one to keep up with. Maybe I'm just a software gal, but even with I go to Dell's web site invariably I can never put together a server that has the right parts in the right places and I get a “we're sorry you cannot put that backplane with that drive without major hardware issues” ...or some equivalent message.
I'd say most of the gang spec out a system that they get comfortable with and then 'stay' with that footprint for a while until it's time to reevaluate and start over.
Just don't forget when talking to that business owner that they don't care about what size the pipe is our how the backflush device works. They want a nice looking faucet and water that is hot when they want it and cold when they want that too. Don't talk nuts and bolts about servers, show them how the faucet [server] works. Turn on the faucet and show the running water. Show them Remote Web Workplace and Outlook Web Access. In fact, take your own laptop and showcase how 'you' can communicate remotely with 'your' office. Making sure your own 'geek factor' is in place is probably the best sales tool you have. Not to mention, it's a great way to keep up to date on interoperability of technology...and yes...before someone asks..keeping up with all the geek toys is indeed an ordinary and necessary business expense and thus the devices you would be buying to showcase mobility would be deductible.