WO2006052829 DYNAMICALLY UPGRADEABLE FAULT-TOLERANT STORAGE SYSTEM PERMITTING VARIOUSLY SIZED STORAGE DEVICES AND METHOD

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Publication Number WO/2006/052829

Publication Date 18.05.2006

International Application No. PCT/US2005/040174

International Filing Date 04.11.2005

IPC

CPC

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Applicants

TRUSTED DATA CORPORATION [US]/[US] (AllExceptUS)
BARRALL, Geoffrey [GB]/[US] (UsOnly)
TERRY, Julian [GB]/[US] (UsOnly)

Inventors

BARRALL, Geoffrey
TERRY, Julian

Agents

SUNSTEIN, Bruce

Priority Data

60/625,495		05.11.2004		US
60/718,768		20.09.2005		US

Publication Language English (en)

Filing Language English (EN)

Designated States

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Title

(EN) DYNAMICALLY UPGRADEABLE FAULT-TOLERANT STORAGE SYSTEM PERMITTING VARIOUSLY SIZED STORAGE DEVICES AND METHOD

(FR) PROCEDE ET SYSTEME DE MEMOIRE A TOLERANCE DE PANNES, DYNAMIQUEMENT EVOLUTIF, ADMETTANT DES MEMOIRES DE DIVERSES CAPACITES

Abstract

(EN) A dynamically upgradeable fault-tolerant storage system permits a storage device to be replaced with a larger storage device. Data stored redundantly across multiple storage devices is reproduced on the replacement device, and the additional storage space on the replacement device is made available for redundantly storing additional data.

(FR) La présente invention concerne un système de mémoire à tolérance de pannes et dynamiquement évolutif, qui permet de remplacer une mémoire par une autre de plus grande capacité. Les données enregistrées en redondance dans plusieurs mémoires sont recopiées sur la nouvelle mémoire, la place restant libre sur la nouvelle mémoire étant disponible pour l'enregistrement en redondance de nouvelles données.

G	PHYSICS
06	COMPUTING; CALCULATING OR COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
11	Error detection; Error correction; Monitoring
07	Responding to the occurrence of a fault, e.g. fault tolerance
08	Error detection or correction by redundancy in data representation, e.g. by using checking codes
10	Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens

G	PHYSICS
06	COMPUTING; CALCULATING OR COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
11	Error detection; Error correction; Monitoring
07	Responding to the occurrence of a fault, e.g. fault tolerance
08	Error detection or correction by redundancy in data representation, e.g. by using checking codes
10	Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
11	Error detection; Error correction; Monitoring
07	Responding to the occurrence of a fault, e.g. fault tolerance
08	Error detection or correction by redundancy in data representation, e.g. by using checking codes
10	Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
11	Error detection; Error correction; Monitoring
07	Responding to the occurrence of a fault, e.g. fault tolerance
08	Error detection or correction by redundancy in data representation, e.g. by using checking codes
10	Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
1076	Parity data used in redundant arrays of independent storages, e.g. in RAID systems
1084	Degraded mode, e.g. caused by single or multiple storage removals or disk failures

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
11	Error detection; Error correction; Monitoring
07	Responding to the occurrence of a fault, e.g. fault tolerance
08	Error detection or correction by redundancy in data representation, e.g. by using checking codes
10	Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
1076	Parity data used in redundant arrays of independent storages, e.g. in RAID systems
1096	Parity calculation or recalculation after configuration or reconfiguration of the system

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1. WO2006052829 - DYNAMICALLY UPGRADEABLE FAULT-TOLERANT STORAGE SYSTEM PERMITTING VARIOUSLY SIZED STORAGE DEVICES AND METHOD

G	PHYSICS
11	INFORMATION STORAGE
B	INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
2220	Record carriers by type
40	Combinations of multiple record carriers
41	Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
415	Redundant array of inexpensive disks [RAID] systems

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
12	Accessing, addressing or allocating within memory systems or architectures
16	Protection against loss of memory contents

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
2211	Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
10	Indexing scheme relating to G06F11/10
1002	Indexing scheme relating to G06F11/1076
1004	Adaptive RAID, i.e. RAID system adapts to changing circumstances, e.g. RAID1 becomes RAID5 as disks fill up

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
2211	Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
10	Indexing scheme relating to G06F11/10
1002	Indexing scheme relating to G06F11/1076
1023	Different size disks, i.e. non uniform size of disks in RAID systems with parity

G	PHYSICS
06	COMPUTING; CALCULATING; COUNTING
F	ELECTRIC DIGITAL DATA PROCESSING
2211	Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
10	Indexing scheme relating to G06F11/10
1002	Indexing scheme relating to G06F11/1076
1028	Distributed, i.e. distributed RAID systems with parity