Snow Server with Wi-Fi clients - good idea?

Hi everyone,
I am planning on purchasing a Mac Mini with Snow Leopard Server. Currently we have 2 iMacs, one MacBook Pro and a PC (will be going soon!) all networked with a wireless gateway and AirPort Express. Everything works well. However I want to consolidate things. Store all user accounts in one central location (so access, management, backup etc. becomes easier).
My question is if I buy the Mac Mine Server would I have to connect the clients (atleast the desktops) physically to the server through Ethernet or can ALL clients work over Wi-Fi? I think in offices/businesses etc. Ethernet is preferred and is common. What are the merits and demerits of Ethernet and Wi-Fi (other than the obvious ones)? What about speed? (we have 802.11g for Wi-Fi). Is accessing the Mac OS X Server over Wi-Fi in large numbers and no wired clients a common scenario?
Is it possible to turn the Mac Mini into a "headless" server. If yes, how?
If you have any links for this topic, that would be great!
Thanks,
Kenneth

Wired Gigabit Ethernet (GbE) networking is massively faster than 802.11n 5 GHz dual-slot is massively faster than 802.11b/g.
If you're sipping bandwidth, you probably won't notice the difference here.
If you're slinging any serious quantities of data around, you'll quickly find yourself moving to 802.11n 5 GHz dual-slot (locally 200+ Mb), or to GbE wired.
If you're in an environment with interference from other WiFi stations, then 5 GHz can avoid the racket in 2.4 GHz band. Regardless, wired networking typically has a much reduced likelihood of interference.
I generally prefer to run a mid- to upper-end firewall, and to use one or more AirPort or Time Capsule boxes as an access point (AP), and preferably with a gigabit wired "backhaul" to the network.
A Mac Mini is more than capable of running Open Directory and other such; just make sure you work out your archival strategy, lest you end up with a corruption or data loss or such. RAID is nice and a decent defense against a disk failure, but it doesn't protect against corruptions and deletions. (The Mac Mini Server can have interna; RAID. Other Mac Mini boxes can have external RAID added via the FireWire 400 or FW800 connection or (less desirably) via USB, and external RAID storage.)
The Mac Mini box doesn't need a head, but it doesn't hurt to have an old LCD and a keyboard available for hook-up to the box; that equipment is cheap and common and usually already available, and it can make various management tasks easier. If you want to administer the box fully remotely, then investing in a network power strip or remotely network-managed Less- Interruptible Power Supply can be useful; having a remote power switch can avoid a few trips over to the box to reset or reboot it.
And if you're setting up the network fresh, stay out of 192.168.0.0/16 private class c; use the 10.0.0.0/8 private class a or 172.16.0.0/12 private class b blocks, as either of these blocks tends to avoid VPN-related IP routing problems that tend to arise with subnets in 192.168.0.0/16.

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Message was edited by: maximumjack

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