Write-once-read-many storage system and method for...

Details Write-once-read-many storage system and method for... Write-once-read-many storage system and method for...

2006-12-26

2006-12-26

Truong, Cam-Y (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000, C707S793000

Reexamination Certificate

active

07155460

ABSTRACT:
A write-once-read-many (WORM) storage system that employs large-capacity and relatively inexpensive disks in connection with a file system on a file server is provided. The file system contains most or all of the required WORM functionality so as to impose a minimal footprint on client applications, client operating systems and open protocols if desired. The system is organized around WORM storage volumes that contain files that, when committed to WORM storage, cannot be deleted or modified. Any file path or directory tree structure used to identify the file within the WORM volume is locked and cannot be deleted. In one embodiment, the administrator creates a WORM volume, capable of storing designated WORM files. The client then creates an appropriate WORM file using the appropriate protocol semantics. The file is written to the volume and committed by transitioning the file attributes from a not-read-only to a read-only state. The file system recognizes the persistently stored WORM attribute of any file in a WORM volume as WORM file. Henceforth, any attempt to modify the file attributes, write to the file, or delete the file, by clients, administrators or other entities is rejected and a request denied message is returned to the attempting party

REFERENCES:
patent: 5163131 (1992-11-01), Row et al.
patent: 5355453 (1994-10-01), Row et al.
patent: 5485579 (1996-01-01), Hitz et al.
patent: 5802366 (1998-09-01), Row et al.
patent: 5819292 (1998-10-01), Hitz et al.
patent: 5931918 (1999-08-01), Row et al.
patent: 5941972 (1999-08-01), Hoese et al.
patent: 5963962 (1999-10-01), Hitz et al.
patent: 6038570 (2000-03-01), Hitz et al.
patent: 6065037 (2000-05-01), Hitz et al.
patent: 6085298 (2000-07-01), Ohran
patent: 6108285 (2000-08-01), Freeman et al.
patent: 6298386 (2001-10-01), Vahalia et al.
patent: 6330571 (2001-12-01), Bills et al.
patent: 6425035 (2002-07-01), Hoese et al.
patent: 6457130 (2002-09-01), Hitz et al.
patent: 6606693 (2003-08-01), Morris
patent: 6823336 (2004-11-01), Srinivasan et al.
U.S. Appl. No. 09/127,497, filed Nov. 22, 2001, Kleiman et al.
U.S. Appl. No. 09/932,578, filed Jun. 27, 2002, Lewis et al.
U.S. Appl. No. 10/100,967, Federwisch et al.
David Hitz et al. TR3002 File System Design for a NFS File Server Appliance published by Network Appliance, Inc.
Common Internet File System (CIFS) Version: CIFS-Spec 0.9, Storage Networking Industry Association (SNIA), Draft SNIA CIFS Documentation Work Group Work-in-Progress, Revision Date: Mar. 26, 2001.
Fielding et al. (1999) Request for Comments (RFC) 2616, HTTP/1.1.
Notification of Transmittal of the International Search Report or the Declaration PCT/US04/06836 Mar. 5, 2004.

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