[특허]Configurable reuse delay criterion for storage volumes

Configurable reuse delay criterion for storage volumes 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01R-031/28 G06F-011/00
출원번호	US-0655526 (1996-05-30)
발명자 / 주소	Cannon David Maxwell (Tucson AZ)
출원인 / 주소	International Business Machines Corporation (Armonk NY 02)
인용정보	피인용 횟수 : 26 인용 특허 : 0

초록 ▼

A data processing system using a storage management server provides a method and apparatus for preserving consistency between a database back-up and a set of storage volumes. The system includes a plurality of client systems coupled to the storage management server. Primary and back-up copies of client files are stored within a set of attached storage volumes. The server contains a server database to maintain directory and reference location information linking the primary and back-up copies of the client files. The server periodically performs an incremental back-up of the server database to a database back-up. The server utilizes a reuse delay criterion to set selected storage volumes as pending volumes. Pending volumes are not eligible for reuse by the server, thereby preventing the server from overwriting these pending volumes and invalidating reference location information for the pending volumes stored in the database back-up. When the reuse delay criterion elapses, the pending volumes are classified as empty, making them eligible for reuse by the server.

대표청구항 ▼

In a data processing system having a plurality of client systems generating client data files, and a storage management server coupled to said plurality of client systems, said server having a plurality of storage volumes for storing a primary copy and a back-up copy of said client data files, a server database for maintaining directory and reference location information linking said primary copy and said back-up copy of said client data files, and a database back-up for storing an incremental back-up of said server database, a method in said server for preserving consistency between said database back-up and said plurality of storage volumes comprising steps of: (a) maintaining storage volume information in said server database, an entry in said storage volume information corresponding to each of said plurality of storage volumes; (b) specifying a reuse delay criterion for a selected storage volume; (c) marking said selected storage volume as a pending storage volume when a last remaining file is removed from said selected storage volume to prevent said server from invalidating references within said database back-up by overwriting said selected storage volume; (d) periodically checking whether said reuse delay criterion has elapsed for said pending storage volume; and (e) classifying said pending storage volume as eligible for reuse by said server when said reuse delay criterion has elapsed.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Configurable reuse delay criterion for storage volumes 원문보기

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Configurable reuse delay criterion for storage volumes 원문보기

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연구과제 타임라인

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