| Subject | English | Welsh |
| comp., MS | cluster network | rhwydwaith clwstwr (A group of independent computers that work together to provide a common set of services and present a single-system image to clients. The use of a cluster enhances the availability of the services and the scalability and manageability of the operating system that provides the services) |
| comp., MS | server cluster | clwstwr o weinyddion (A group of servers that are in one location and that are networked together for the purpose of sharing workload) |