Most serious forex traders use a virtual server for their expert advisors, but not all VPS server are equal in performance.
There are about 4 popular VPS technologies:- Virtuozzo: Virtuozzo is a proprietary operating system-level virtualization product produced by Parallels, Inc. Both windows and Linux. Parallels Virtuozzo Containers creates multiple isolated containers (also known as Virtual Environments (VEs), or Virtual Private Servers (VPSs)) on a single physical server. Parallels Virtuozzo Containers virtualizes at the operating system level, rather than the hardware level as other Virtual Machine (VM) products frequently do. This allows the sharing of hardware, systems management effort, and sometimes software licenses among different workloads. A container behaves in aspects as if it was a stand-alone server. But this is not the optimal vitalization technology for forex trading because the VPS vendor can over sell the machines and give you less optimal performance.