Resources Contact Us Home
Disk array device

Image Number 2 for United States Patent #6145067.

A disk array apparatus includes a plurality of physical disks forming a physical disk group which is logically divided into a plurality of unit areas. The unit areas are combined into a logical disk. This device includes a control section, a logical disk reconfiguration executing section, a P-EXTENT copying means, a read means, a write means, and a double write means. The control section controls an access to the logical disk in accordance with an external request. The logical disk reconfiguration executing section reconfigures the logical disk in accordance with an external request. The P-EXTENT copying means copies data from a unit area as a reconfiguration source to a unit area as a reconfiguration destination when the logical disk is reconfigured. The read means reads out data from a unit area. The write means writes data in a unit area that is not being reconfigured. The double write means writes data in both the unit area as the reconfiguration source and the unit area as the reconfiguration destination when the data is written in the unit area that is being reconfigured.

  Recently Added Patents
Lacrosse head
Synchronization of sound generated in binaural hearing system
Memristive junction with intrinsic rectifier
Liquid crystal display and manufacturing method thereof
Architectural panel with bamboo rings light density embossed surface
Image-monitoring method for electroporation treatment and as associated image-monitoring appliance
System and method of automatic piloting for in-flight refuelling of aircraft, and aircraft comprising said system
  Randomly Featured Patents
Method for insertion or removal of fuel rods into or from a grid of a nuclear fuel assembly
Highly autonomous cross-country workshop and servicing van
Truck sunvisor
Driver circuit for driving a plasma display panel driver module incorporating said circuit and method of testing such a module
Method of age testing rubber based propellants
Low frequency cabinet, in particular for a triphonic audio network
Process for preparing alcohol soluble condensates of abietic acid and a protein hydrolsate
Reception system for replacing transport packets
Integrally formed molded parts and method for making the same
Searching and measuring endoscope