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| Number | Title | Issue Date |
| 7979655 | Dynamic optimization of device limits and thresholds in a write cache A method, computer program product and system for dynamically optimizing the limit and the thresholds of a write cache for a storage adapter connected to storage devices, includes measuring continually an overall locality of data in the write cache for the storage d... | 07/12/2011 |
| 7925837 | Maintaining write cache and parity update footprint coherency in multiple storage adaptor configuration A method, computer program product and computer system for maintaining write cache and parity update footprint coherency in a multiple storage adaptor configuration for storage adaptors in a storage subsystem, which includes providing atomic updating of the storage ... | 04/12/2011 |
| 7779335 | Enhanced error identification with disk array parity checking When parity checking in a disk array such as a RAID-6 system determines data and parity information is unsynchronized, additional calculations are performed to determine whether the error may be attributed to faulty data on a disk drive or to a more systemic problem... | 08/17/2010 |
| 7669107 | Method and system for increasing parallelism of disk accesses when restoring data in a disk array system In a disk array environment such as a Redundant Array of Independent Disks-6 (RAID-6) environment, the overall performance overhead associated with exposed mode operations such as resynchronization, rebuild and exposed mode read operations is reduced through increas... | 02/23/2010 |
| 7487394 | Recovering from abnormal interruption of a parity update operation in a disk array system Data associated with the state of a parity update operation in a disk array system such as a RAID-6 system is stored during performance of the operation so that, in the event the operation is interrupted, recovery may be initiated using the stored data. The stored d... | 02/03/2009 |
| 7392428 | Method and system for recovering from abnormal interruption of a parity update operation in a disk array system Data associated with the state of a parity update operation in a disk array system such as a RAID-6 system is stored during performance of the operation so that, in the event the operation is interrupted, recovery may be initiated using the stored data. The stored d... | 06/24/2008 |
| 7392458 | Method and system for enhanced error identification with disk array parity checking When parity checking in a disk array such as a RAID-6 system determines data and parity information is unsynchronized, additional calculations are performed to determine whether the error may be attributed to faulty data on a disk drive or to a more systemic problem... | 06/24/2008 |
| 7290199 | Method and system for improved buffer utilization for disk array parity updates During a parity update of a parity stripe in a disk array, constant values used in finite field arithmetic are algebraically combined in order to reduce the number of buffers and steps needed to update multiple parity values when a change in data occurs. In one impl... | 10/30/2007 |
| 6857045 | Method and system for updating data in a compressed read cache In a first aspect, a method is provided for updating a compressed cache. The method includes the steps of (1) initiating an update routine for replacing first data stored within the cache with second data, wherein a first section of a compressed data band stored in ... | 02/15/2005 |
