US Patent 7185165 Invariant memory page pool and implementation thereof

A distributed memory computing environment is structured with an invariant memory page pool. The environment includes a device, a memory, a hard disk, and an operating system running on the device. A device ID lookup table and a Memory Block ID Lookup Table are stored in memory. Copies of memory pages and their look up tables are stored on the hard disk. If the operating system is shut down, at subsequent system start-up, memory is divided according to the same divisions seen on the memory page copies saved in configuration files.