Title:
一回書き込み複数回読み出し式ストレージ・システム及びその実施方法
Document Type and Number:
Japanese Patent JP4310338
Kind Code:
B2
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.
Inventors:
McGovern, William, Pea
Heller, jeffery, ell
Wagner, Jay, Christopher
Heller, jeffery, ell
Wagner, Jay, Christopher
Application Number:
JP2006509188A
Publication Date:
August 05, 2009
Filing Date:
March 05, 2004
Export Citation:
Assignee:
NetApp, Inc.
International Classes:
G06F3/06; G06F1/00; G06F12/00; G06F17/30; G06F
Domestic Patent References:
| JP2004110437A | ||||
| JP2000148404A | ||||
| JP2001084115A | ||||
| JP3100743A | ||||
| JP2003051995A | ||||
| JP10027116A | ||||
| JP7295941A | ||||
| JP5094351A | ||||
| JP63159949A | ||||
| JP6035782A | ||||
| JP10124368A |
Foreign References:
| US6185661 | ||||
| US6108285 | ||||
| US20010039622 | ||||
| US6330571 |
Attorney, Agent or Firm:
Satoshi Furuya
Takahiko Mizobe
Kiyoharu Nishiyama
Takahiko Mizobe
Kiyoharu Nishiyama