BEIJING Z&W TECHNOLOGY CONSULTING CO., LTD. Patent applications |
Patent application number | Title | Published |
20120317084 | METHOD AND SYSTEM FOR ACHIEVING DATA DE-DUPLICATION ON A BLOCK-LEVEL STORAGE VIRTUALIZATION DEVICE - A method and system for achieving data de-duplication on a block-level storage virtualization device belonging to the field of data storage technologies, is disclosed. The method comprises: deleting the duplicate data in the actual physical data corresponding to the specified virtual LBA address space to obtain the data extents after physical data is de-duplicated; establishing the correspondence between the virtual LBA address space and the data extents after the physical data is de-duplicated; according to the correspondence and metadata information of the data extents, obtaining the storage position information of the actual physical data corresponding to the virtual LBA address space pointed by external data read and write requests to complete the I/O redirection. This invention also provides a system for achieving data de-duplication on a block-level storage virtualization device. This invention can delete duplicate data across hosts and storage devices, to achieve a wider scope of data de-duplication. | 12-13-2012 |
20110170538 | Method and System for Communications Roaming - A method and system for communications roaming discloses that end subscribers apply for numbers provided by roaming networks, connect their numbers in local networks to roaming network ones and then store them in the database in Global Roaming Interface Agent (GRIA). When a called number is dialed, the calling communications network first determines if the calling number or the called number belongs to a number in local network. If no, the calling network sends Global Roaming Interface Agent a request to search and check if the number in roaming network is stored under the calling number or the called number; if yes, the corresponding calling number or called number in roaming network will be used as the number for communication. Taking the technical solution from this invention, a flexible and low-cost global roaming communications system can be achieved by binding subscribers' multiple numbers to establish a uniform end-subscriber communications interface. | 07-14-2011 |