Inventor
NIELSEN KARL ALLEN
US26 patents
⚠️ This page may combine multiple inventors who share the name “NIELSEN KARL ALLEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
22 patentsUS8370715B2Feb 5, 2013
Error checking addressable blocks in storage
IBM63 citations97
US7849356B2Dec 7, 2010
Parity data management system apparatus and method
IBM21 citations92
US7024530B2Apr 4, 2006
Method, system, and program for establishing and using a point-in-time copy relationship
IBM30 citations92
US7421535B2Sep 2, 2008
Method for demoting tracks from cache
IBM38 citations91
US7143305B2Nov 28, 2006
Using redundant spares to reduce storage device array rebuild time
IBM40 citations91
US7526686B2Apr 28, 2009
Apparatus, system, and method for active data verification in a storage system
IBM23 citations89
US6820172B2Nov 16, 2004
Method, system, and program for processing input/output (I/O) requests to a storage space having a plurality of storage devices
IBM14 citations84
US7536593B2May 19, 2009
Apparatus, system, and method for emergency backup
IBM8 citations82
US10901645B1Jan 26, 2021
Converting small extent storage pools into large extent storage pools in place
IBM2 citations73
US6957361B2Oct 18, 2005
Method, system, and program for error handling in a dual adaptor system
IBM8 citations73
US7962690B2Jun 14, 2011
Apparatus and method to access data in a raid array
IBM2 citations63
US7876703B2Jan 25, 2011
System and method for enabling connection among devices in a network
IBM3 citations63
US12399658B2Aug 26, 2025
Determining a storage device type on which to store extents of data in a storage system
IBM0 citations62
US11314435B2Apr 26, 2022
Converting small extent storage pools into large extent storage pools in place
IBM0 citations62
US11132138B2Sep 28, 2021
Converting large extent storage pools into small extent storage pools in place
IBM1 citations62
US12436703B2Oct 7, 2025
Determining to migrate data between compressed storage devices and non-compressed storage devices in a storage system
IBM0 citations52
US11467772B2Oct 11, 2022
Preemptive staging for full-stride destage
IBM0 citations52
US11231855B2Jan 25, 2022
Determination of a type of destage to perform based on preference between performance of operations and preservation of drive life using a machine learning module
IBM0 citations52
US11226744B2Jan 18, 2022
Determination of a type of destage to perform based on preference between performance of operations and preservation of drive life
IBM0 citations52
US7890697B2Feb 15, 2011
System and program for demoting tracks from cache
IBM0 citations51
US7917800B2Mar 29, 2011
Using device status information to takeover control of devices assigned to a node
IBM1 citations49
US7568121B2Jul 28, 2009
Recovery from failure in data storage systems
IBM0 citations42