Over the last few years, the use of grid has increased exponentially; a major challenge in a dynamic Grid with thousands of machines connected to each other is Fault Tolerant. Checkpointing is an indispensable technique to provide fault tolerance for long-running high-throughput applications like those running on desktop grids. Checkpoint can store and recovery applications when faults happen and is becoming critical to large information systems. This technology significantly supports the load-balancing and fault-tolerance capabilities in Grids. On the contrary, this book, therefore, provides a new metric of success for parallel and distributed network. The book describes the Grid Checkpointing algorithm which can help to save our data in the worst condition e.g. system crash, disk failure etc. the prototype design and implementation of fault tolerant service, which makes it possible to utilize in databases. This book is useful in saving data in small business as well as in the big market professionals.