Patent ID: 9075528
Filing Date: 2015-07-07
Classification: G06F

Abstract:
1. A virtual disk management system used in a diskless PC network communication agent system comprising a plurality of storage media, at least one storage server and a client computer, said at least one storage server being connected to said storage media through said virtual disk management system, said client computer being connected to said at least one storage server through a network, said virtual disk management system being adapted for creating virtual disks having dynamic space allocation effects at said storage media and storing data into and fetching data from said virtual disks, said virtual disk management system using a physical block index table, a storage media group record table, a virtual disk physical block occupation table and a differential disk relation table for virtual disk management, wherein: said physical block index table is created by said virtual disk management system by means of unanimously formatting each said storage medium into a plurality of physical blocks subject to a given fixed block capacity value; said storage media group record table is created by said virtual disk management system by means of scanning the number of all usable storage media connected thereto and giving a respective identification code; said virtual disk physical block occupation table comprises a virtual disk serial number and a physical block index, said virtual disk serial number being the exclusive serial number given by said virtual disk management system to the virtual disk created by means of said at least one storage server upon receipt of a virtual disk creation instruction from said client computer, said physical block index being for recording the physical block series allocated by said virtual disk management system; said differential disk relation table is adapted for recording the serial number of the associated virtual disk and differential disk given by said virtual disk management system when the differential disk is created by said virtual disk management system through said at least one storage server upon receipt of a differential disk creation instruction from said client computer.