Patent
Storage device array architecture with solid-state redundancy unit
David W. Gordon
- 14 Oct 1994
107
TL;DR: In this paper, the authors proposed a fault-tolerant storage device array using a solid-state storage unit for storage of redundancy information, which solves the redundancy bottleneck inherent in a RAID 4 architecture by replacing the electro-mechanical redundancy storage unit with a solid state device (SSD).
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Abstract: A fault-tolerant storage device array using a solid-state storage unit for storage of redundancy information. The invention solves the redundancy bottleneck inherent in a RAID 4 architecture by replacing the electro-mechanical redundancy storage unit with a solid-state device (SSD). The present invention requires reading an old data block from a storage unit and an old redundancy data block from the SSD, then combining the old data block, a new data block, and the old redundancy data block to generate a new redundancy data block, and thereafter writing the new data block to a storage unit and the new redundancy data block to the SSD. However, reading the old redundancy data block from the SSD and writing the new redundancy data block to the SSD at electronic speeds takes a negligible amount of time compared to the Read and Write times of a typical rotating disk storage unit. While the storage unit on which a new data block will be stored is involved for the duration of each data modification operation, the involvement of the SSD in the operation ceases upon writing the new redundancy data block. Thereafter, the SSD is available for updating a redundancy data block for a next storage unit.
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Citations
Patent
Computer backup using a file system, network, disk, tape and remote archiving repository media system
Steven M. Blumenau
- 03 Dec 1996
TL;DR: In this article, a computer having backup capabilities for backing up data on a host storage disk of the computer to a remote archive repository, the computer including a backup application that determines when data to be backed up should be copied to the remote archiving repository and makes read requests to make a copy of data on the host disk and makes write requests to store the copy at the remote archives.
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Patent
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Robert L. Horn
- 14 Dec 2010
TL;DR: In this paper, the authors proposed truncated RAID stripes (fewer storage elements per stripe) to save cached write data when a power failure occurs, which allows the system to maintain RAID parity data protection in a power fail cache flush case even though a full stripe of write data may not exist.
225
Patent
Storage system architectures and multiple caching arrangements
Leroy Corbett Hand,Linda Georghegan Mcclure,Arnold Albin Anderson +2 more
- 16 Sep 2003
TL;DR: In this paper, an arrangement is provided for storage systems that use solid state disks (340) for multiple functions, where a storage space can be divided into multiple zones according to information access traffic patterns.
151
Patent
System and method for using over-provisioned data capacity to maintain a data redundancy scheme in a solid state memory
Robert L. Horn
- 14 Dec 2010
TL;DR: Redundant parity RAID (5, 6, 50, 60) as mentioned in this paper is a well-known technique for increasing data reliability beyond the failure rate of an individual storage device, where a replacement or spare element is required to restore redundancy.
150
Patent
Fault tolerant memory
Paul A. Santeler,Kenneth A. Jansen,Sompong P. Olarig +2 more
- 30 Sep 1997
TL;DR: In this article, the memory controller is configured to access memory modules in response to interaction with the central processing unit and define a fault tolerant memory array with the memory modules, each memory module stores first data represented by second data stored by the other memory modules.
144
References
A case for redundant arrays of inexpensive disks (RAID)
David A. Patterson,Garth A. Gibson,Randy H. Katz +2 more
- 01 Jun 1988
TL;DR: Five levels of RAIDs are introduced, giving their relative cost/performance, and a comparison to an IBM 3380 and a Fujitsu Super Eagle is compared.
Patent
System for recovering data stored in failed memory unit
Norman Ken Ouchi
- 31 May 1977
TL;DR: In this article, a storage subsystem comprising a storage control unit and a number of failure independent storage devices, such as disk files, is provided with a check sum generator for generating a check-sum segment from segments of a system record as the system record segments are being transferred between the storage subsystem and a CPU.
1K
Patent
Disk drive memory.
Robert Dunphy,Robert Walsh,John Henry Bowers +2 more
- 11 Jan 1990
TL;DR: The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memories that emulates the format and capability of large form factor disks.
429
Patent
Storage device array architecture with copyback cache
William A. Brant,Walker Mark S,David C. Stallmo,Albert S Lui +3 more
- 31 Dec 1991
TL;DR: In this paper, the authors present a fault-tolerant storage device array using a copyback cache storage unit for temporary storage, where Write data is copied from a controller buffer to a reserved area of each storage unit comprising the array.
356
Patent
Parity spreading to enhance storage access
Brian Eldridge Clark,Terrence James Stewart,Francis Daniel Lawlor,George David Timms,Werner Eric Schmidt-Stumpf +4 more
- 26 May 1987
TL;DR: In this paper, a storage management mechanism distributes parity blocks corresponding to multiple data blocks substantially equally among a set of storage devices, enhancing the access characteristics of the set of devices.
347