There have been a lot of posts lately about what to look for in a direct access broker. Not regarding software or costs, but stability issues such as having adequate servers to handle all remote clients, redundancy, etc. To those of you who understand this stuff a little better, what questions should you ask your broker (or potential broker) that would give you an indication of whether they have the proper infrastructure to handle your trading? At minimum, which of these key elements should direct access traders look for in a brokerage? I realize that this question has probably been answered by some of you in other threads in a piecemeal fashion. However, I think it would be good to have one thread people can refer to for this important issue.