Indeed you don't - because renting one dedicated server box that you can run two full 80-man Squad servers on doesn't cost that amount of money; more like +/- $150, the exact amount depending on who you go with / what sort of rig you want to rent. If you only want to run one 80-man server, for example, you can go for a cheaper package and get one for around $100.
What I would do is setup the tower so it plays with the best possible performance. As nobody will be playing on it you can pull all the graphics down to their minimums. I'd set it up with a password initially until you can create a small central base with a bed where the main character will respawn and then make it player proof (dbl steel walls and off the ground).
All of these features may look impressive, but if you don't know what Dedicated Hosting is in the first place, these features probably don't matter much to you at all. When you purchase a Dedicated Server from A2 Hosting, you are getting all of the resources listed with the server plan of your choice. You do not share these resources with any other user or customer. The bandwidth, RAM and data transfer are for your use exclusively. With all of these resources at your disposal, you can expect your hosting service to be both highly reliable with top performance.
With dedicated servers, you want a lot of storage and power if you are building an enterprise website. Otherwise, you may not need as much storage. There are also differences between processors. With single processor servers, you will not spend as much, but if you are purchasing a server with multi-core such as an Intel Xeon processor, then you will likely spend to have that additional power.
Once you are ready to go ... remove the password, start up the game, strip your character down to their tight whities (placing everything into a crate), turn the monitor off, and wank away. Note that your host character will die shortly thereafter but the game will run on and external players can come and go as they please (assuming you/they don't have any connection issues).
Support for any of these operating systems typically depends on the level of management offered with a particular dedicated server plan. Operating system support may include updates to the core system in order to acquire the latest security fixes, patches, and system-wide vulnerability resolutions. Updates to core operating systems include kernel upgrades, service packs, application updates, and security patches that keep the server secure and safe. Operating system updates and support relieves the burden of server management from the dedicated server owner.