And don t forget about the all-important issue of Data Backup and Redundancy . The numbers are not hierarchical, which is to say that RAID5 is not necessarily better than RAID0, just different. You don t know what you got till it s gone. A more technical question, but also very important, is whether your server is on a dedicated port , or on a shared port. A related question is whether the network you are connected into is based on a switch or a hub.
Switched networks are higher performance, and offer more security.
Make sure you ask if those figures relate to their network, or the network of their provider. Be sure to ask how much of your network is utilized. The speed of the network will suffer because of congestion. There is indeed a great deal to consider, and a bit of research to be done. But your time will be well spent if you find a good company that is able to meet your needs and assist you in the dedication process.