Disk array subsystem and data generation method therefor
September 7, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMass storage array with efficient parity calculation On-line restoration of redundancy information in a redundant array system Disk controller having host interface and bus switches for selecting buffer and drive busses respectively based on configuration control signals High availability disk arrays Delayed initiation of read-modify-write parity operations in a raid level 5 disk array On-line reconstruction of a failed redundant array system Storage unit generation of redundancy information in a redundant storage array system Two-dimensional disk array Fast write I/O handling in a disk array using spare drive for buffering System and method for disk array data transfer InventorsAssigneeApplicationNo. 524705 filed on 09/07/1995US Classes:711/114, Arrayed (e.g., RAIDs)714/805Storage accessing (e.g., address parity check)ExaminersPrimary: Swann, Tod R.Assistant: King, Conley B. Jr. Attorney, Agent or FirmInternational ClassesG06F 013/00G06F 011/10 Foreign Application Priority Data1994-09-09 JPAbstractA disk drive has two channels of upper interfaces, and one channel is connected to a disk array controller, and the other channel is connected between a plurality of disk drives. A data disk drive reads the old data on the recording medium, calculates the exclusive OR of the old data and the corresponding data from the disk array controller, and transfers it to a parity disk as pseudo-parity data from the other channel. The parity disk drive reads the old parity data on the recording medium, calculates the exclusive OR of the old parity data and the pseudo-parity data, and writes it as new parity data.Other References
Field of SearchArrayed (e.g., RAIDs) | |
