Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method and apparatus to select a profile of a digital communication line
Delay interferometer using magneto-optic effect of a variable faraday rotator
Methods and apparatus for providing video on demand and network PVR functions using IP streaming
Hardware/software debugging using memory access parameters
Differentiated PSIP table update interval technology
Light emitting device
Base station apparatus and method for use in mobile communication system
  Randomly Featured Patents
SiOC properties and its uniformity in bulk for damascene applications
Microtransformer for system-on-chip power supply
Method of making a semiconductor device by dry etching process
Long-acting insecticidal mat and heat-transpiration insecticidal method using the same
Cigarette and cigar extinguisher
Method of sorting and counting cans
Arrangement for controlling the speed of a hydraulic motor
Conveyor belt support
Code-error correcting device
Multi-directional comb filtering in a digital video decoder