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Inventor:
Stallmo; David C.
Address:
Boulder, CO
No. of patents:
18
Patents:












Patent Number Title Of Patent Date Issued
6289398 Distributed storage array system having plurality of storage devices which each of devices inclu September 11, 2001
A RAID-compatible data storage system which allows incremental increases in storage capacity at a cost that is proportional to the increase in capacity. The system does not require changes to the host system. The control and interface functions previously performed by a single (or re
6052759 Method for organizing storage devices of unequal storage capacity and distributing data using di April 18, 2000
A Redundant Array of Independent Disks (RAID) system that is adaptable to host Input/Output traffic, wherein the RAID configuration is hidden from the host computer, and wherein the system uses various methods for striping and organizing data across the array when disks are added or
5911779 Storage device array architecture with copyback cache June 15, 1999
A fault-tolerant storage device array using a copyback cache storage unit for temporary storage. When a Write occurs to the RAID system, the data is immediately written to the first available location in the copyback cache storage unit. Upon completion of the Write to the copyback cache
5875456 Storage device array and methods for striping and unstriping data and for adding and removing di February 23, 1999
A Redundant Array of Independent Disks (RAID) system that is adaptable to host Input/Output traffic, wherein the RAID configuration is hidden from the host computer, and wherein the system uses various methods for striping and organizing data across the array when disks are added or
5787459 Distributed disk array architecture July 28, 1998
A RAID-compatible data storage system which allows incremental increases in storage capacity at a cost that is proportional to the increase in capacity. The system does not require changes to the host system. The control and interface functions previously performed by a single (or re
5689678 Distributed storage array system having a plurality of modular control units November 18, 1997
A RAID-compatible data storage system which allows incremental increases in storage capacity at a cost that is proportional to the increase in capacity. The system does not require changes to the host system. The control and interface functions previously performed by a single (or re
5657468 Method and apparatus for improving performance in a reduntant array of independent disks August 12, 1997
A RAID disk array that is adaptable to host I/O traffic, wherein the RAID configuration is hidden from the host computer. The system dynamically determines the RAID configuration used to store host data to maximize response time performance and minimize the loss of disk space used for
5617530 Storage device array architecture with copyback cache April 1, 1997
A fault-tolerant storage device array using a copyback cache storage unit for temporary storage. When a Write occurs to the RAID system, the data is immediately written to the first available location in the copyback cache storage unit. Upon completion of the Write to the copyback cache
5613059 On-line restoration of redundancy information in a redundant array system March 18, 1997
A method for on-line restoration of redundancy information in a redundant array storage system. The invention provides alternative methods of restoring valid data to a storage unit after a Write failure caused by a temporary storage unit fault. In the first preferred method, a valid
5548711 Method and apparatus for fault tolerant fast writes through buffer dumping August 20, 1996
An array controller including a DATA-RAM and a SHADOW-RAM. Both the DATA-RAM and the SHADOW-RAM are coupled to a first and second memory interface. Each memory interface has the ability to independently communicate the contents of the SHADOW-RAM over a controller-controller data link
5546535 Multiple controller sharing in a redundant storage array August 13, 1996
A redundant array storage system including storage units divided into two logical arrays. The redundant array storage system further includes a plurality of array control units which are all fully utilized to control data transfers between the logical arrays and a central processing unit
5526482 Storage device array architecture with copyback cache June 11, 1996
A fault-tolerant storage device array using a copyback cache storage unit for temporary storage. When a Write occurs to the RAID system, the data is immediately written to the first available location in the copyback cache storage unit. Upon completion of the Write to the copyback cache
5519844 Logical partitioning of a redundant array storage system May 21, 1996
A redundant array storage system that can be configured as a RAID 1, 3, 4, or 5 system, or any combination of these configurations. The invention includes a configuration data structure for addressing a redundant array storage system, and a method for configuring a redundant array storag
5390187 On-line reconstruction of a failed redundant array system February 14, 1995
A method for on-line reconstruction of a failed storage unit in a redundant array system. After providing a replacement storage unit for the failed storage unit, reconstruction begins for each data stripe in the array. General reconstruction consists of applying an error-correction opera
5274799 Storage device array architecture with copyback cache December 28, 1993
A fault-tolerant storage device array using a copyback cache storage unit for temporary storage. When a Write occurs to the RAID system, the data is immediately written to the first available location in the copyback cache storage unit. Upon completion of the Write to the copyback cache
5235601 On-line restoration of redundancy information in a redundant array system August 10, 1993
A method for on-line restoration of redundancy information in a redundant array storage system. The invention provides alternative methods of restoring valid data to a storage unit after a Write failure caused by a temporary storage unit fault. In the first preferred method, a valid
5208813 On-line reconstruction of a failed redundant array system May 4, 1993
A method for on-line reconstruction of a failed storage unit in a redundant array system. After providing a replacement storage unit for the failed storage unit, reconstruction begins for each data stripe in the array. General reconstruction consists of applying an error-correction opera
5148432 Arrayed disk drive system and method September 15, 1992
An arrayed disk drive system for providing memory to a computer, said arrayed system having a plurality of disk drives configured to form an array, said arrayed disk drives accessed by a plurality of channels, each channel accessing a plurality of disk drives, including a means for c










 
 
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