公开(公告)号：CA2519280A1

公开(公告)日：2004-09-30

申请号：CA2519280

申请日：2004-03-05

Applicant: NETWORK APPLIANCE INC

Inventor： HELLER JEFFREY L ,  MCGOVERN WILLIAM P ,  WAGNER J CHRISTOPHER

IPC: G06F20060101 ,  G06F1/00 ,  G06F3/06 ,  G06F17/30

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 serv er is pro-vided. 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 committe d to WORM storage, cannot be deleted or modified. Any file path or directory tree structure used to identify the file within the WORM vol-ume is locked a nd cannot be deleted. In one embodiment, the administrator creates a WORM volum e, 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 fro m 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 en-tities is rejected a nd a request denied message is returned to the attempting party.

公开(公告)号：AU2004288444B2

公开(公告)日：2010-04-22

申请号：AU2004288444

申请日：2004-04-22

Applicant: NETWORK APPLIANCE INC

Inventor： HELLER JEFFREY L ,  MCGOVERN WILLIAM P

IPC: G06F12/12 ,  G06F20060101 ,  G06F3/06 ,  G06F12/00 ,  G06F12/14 ,  G06F17/30 ,  G06F21/00

Abstract: This invention provides a specified retention date within a data set that is locked against deletion or modification within a WORM storage implementation. This retention date scheme does not utilize any proprietary application program interfaces (APIs) or protocols, but rather, employs native functionality within conventional file (or other data containers, data sets or block-based logical unit numbers) properties available in commonly used operating systems. In an illustrative embodiment, the retention date/time is calculated by querying the file's last-modified time prior to commit, adding the retention period to this value and thereby deriving a retention date after which the file can be released from WORM. Prior to commit, the computed retention date is stored in the file's “last access time” property/attribute field, or another metadata field that remains permanently associated with the file and that, in being used for retention date, does not interfere with file management in a WORM state. Since this field is not utilized in a WORM context, it can be adapted to store this date. Once stored, the retention date in this field is locked against modification. Where extension (never reduction) of a retention period is desired, the last access time field be updated, wherein the new retention period is added to the existing last access time value to derive a new, later retention date for the file. Upon expiry of the retention date, the system allows deletion of the expired WORM file/data set.

公开(公告)号：WO2005045556A3

公开(公告)日：2009-04-02

申请号：PCT/US2004012378

申请日：2004-04-22

Applicant: NETWORK APPLIANCE INC

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L

IPC: G06F12/12 ,  G06F20060101 ,  G06F3/06 ,  G06F12/00 ,  G06F12/14 ,  G06F17/30 ,  G06F21/00

CPC classification number: G06F3/0643 ,  G06F3/0623 ,  G06F3/067 ,  G06F17/30085 ,  G06F17/30188 ,  G06F21/78 ,  G06F2216/09 ,  Y10S707/99953 ,  Y10S707/99955

Abstract: This invention provides a specified retention date within a data set that is locked against deletion or modification within a WORM storage implementation. This retention date scheme does not utilize any proprietary application program interfaces (APIs) or protocols, but rather, employs native functionality within conventional file (or other data containers, data sets or block-based logical unit numbers) properties available in commonly used operating systems. In an illustrative embodiment, the retention date/time is calculated by querying the file's last-modified time prior to commit, adding the retention period to this value and thereby deriving a retention date after which the file can be released from WORM. Prior to commit, the computed retention date is stored in the file's "last access time" property/attribute field, or another metadata field that remains permanently associated with the file and that, in being used for retention date, does not interfere with file management in a WORM state. Since this field is not utilized in a WORM context, it can be adapted to store this date. Once stored, the retention date in this field is locked against modification. Where extension (never reduction) of a retention period is desired, the last access time field be updated, wherein the new retention period is added to the existing last access time value to derive a new, later retention date for the file. Upon expiry of the retention date, the system allows deletion of the expired WORM file/data set.

Abstract translation: 本发明提供在WORM存储实现中锁定以防止删除或修改的数据集内的指定保留日期。 此保留日期方案不使用任何专有的应用程序接口（API）或协议，而是在常用文件（或其他数据容器，数据集或基于块的逻辑单元编号）中使用常规操作系统中可用的属性的本机功能 。 在说明性实施例中，通过在提交之前查询文件的最后修改时间来计算保留日期/时间，将保留期间添加到该值，从而导出可以从WORM释放该文件的保留日期。 在提交之前，计算的保留日期存储在文件的“最后访问时间”属性/属性字段中，或与文件永久关联的另一个元数据字段，并且在用于保留日期时不会干扰文件管理 在WORM状态。 由于这个字段在WORM上下文中没有被使用，所以它可以适应于存储这个日期。 一旦存储，此字段中的保留日期将被锁定以防修改。 在期望保留期限的延长（永不减少）的情况下，最后访问时间字段被更新，其中新的保留期被添加到现有的最后访问时间值以导出该文件的新的较后的保留日期。 保留期限届满后，系统允许删除过期的WORM文件/数据集。

公开(公告)号：WO2004084010A2

公开(公告)日：2004-09-30

申请号：PCT/US2004006836

申请日：2004-03-05

Applicant: NETWORK APPLIANCE INC

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L ,  WAGNER J CHRISTOPHER

IPC: G06F20060101 ,  G06F1/00 ,  G06F3/06 ,  G06F17/30 ,  G06F

CPC classification number: G06F17/30188 ,  G06F3/0643 ,  Y10S707/99952 ,  Y10S707/99953

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 pro-vided. 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 vol-ume 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 en-tities is rejected and a request denied message is returned to the attempting party.

Abstract translation: 提供了一次多次写入（WORM）存储系统，该系统在文件服务器上的文件系统中使用大容量且相对便宜的磁盘。 文件系统包含大部分或全部所需的WORM功能，以便在客户端应用程序，客户端操作系统和开放式协议（如果需要）上施加最小的占用空间。 系统围绕包含文件的WORM存储卷组织，当提交到WORM存储时，不能删除或修改。 用于标识WORM卷中的文件的任何文件路径或目录树结构都被锁定，无法删除。 在一个实施例中，管理员创建能够存储指定的WORM文件的WORM卷。 然后，客户端使用适当的协议语义创建一个适当的WORM文件。 将文件写入卷并通过将文件属性从非只读状态转换为只读状态来提交。 文件系统将WORM卷中任何文件的持久存储的WORM属性识别为WORM文件。 此后，客户端，管理员或其他机构修改文件属性，写入文件或删除文件的任何尝试都被拒绝，请求被拒绝的消息被返回给尝试方。

公开(公告)号：CA2519280C

公开(公告)日：2013-05-07

申请号：CA2519280

申请日：2004-03-05

Applicant: NETWORK APPLIANCE INC

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L ,  WAGNER J CHRISTOPHER

IPC: G06F17/30 ,  G06F20060101 ,  G06F1/00 ,  G06F3/06

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 pro-vided. 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 vol-ume 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 en-tities is rejected and a request denied message is returned to the attempting party.

公开(公告)号：CA2544846C

公开(公告)日：2013-03-12

申请号：CA2544846

申请日：2004-04-22

Applicant: NETWORK APPLIANCE INC

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L

IPC: G06F12/00 ,  G06F20060101 ,  G06F3/06 ,  G06F12/14 ,  G06F17/30 ,  G06F21/00

Abstract: This invention provides a specified retention date within a data set that is locked against deletion or modification within a WORM storage implementation. This retention date scheme does not utilize any proprietary application program interfaces (APIs) or protocols, but rather, employs native functionality within conventional file (or other data containers, data sets or block-based logical unit numbers) properties available in commonly used operating systems. In an illustrative embodiment, the retention date/time is calculated by querying the file's last-modified time prior to commit, adding the retention period to this value and thereby deriving a retention date after which the file can be released from WORM. Prior to commit, the computed retention date is stored in the file's "last access time" property/attribute field, or another metadata field that remains permanently associated with the file and that, in being used for retention date, does not interfere with file management in a WORM state. Since this field is not utilized in a WORM context, it can be adapted to store this date. Once stored, the retention date in this field is locked against modification. Where extension (never reduction) of a retention period is desired, the last access time field be updated, wherein the new retention period is added to the existing last access time value to derive a new, later retention date for the file. Upon expiry of the retention date, the system allows deletion of the expired WORM file/data set.

公开(公告)号：IL175445A

公开(公告)日：2010-12-30

申请号：IL17544506

申请日：2006-05-04

Applicant: NETWORK APPLIANCE INC ,  MCGOVERN WILLIAM P ,  HELLER JEFFREY L

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L

IPC: G06F20060101 ,  G06F3/06 ,  G06F12/00 ,  G06F12/14 ,  G06F17/30 ,  G06F21/00

Abstract: This invention provides a specified retention date within a data set that is locked against deletion or modification within a WORM storage implementation. This retention date scheme does not utilize any proprietary application program interfaces (APIs) or protocols, but rather, employs native functionality within conventional file (or other data containers, data sets or block-based logical unit numbers) properties available in commonly used operating systems. In an illustrative embodiment, the retention date/time is calculated by querying the file's last-modified time prior to commit, adding the retention period to this value and thereby deriving a retention date after which the file can be released from WORM. Prior to commit, the computed retention date is stored in the file's “last access time” property/attribute field, or another metadata field that remains permanently associated with the file and that, in being used for retention date, does not interfere with file management in a WORM state. Since this field is not utilized in a WORM context, it can be adapted to store this date. Once stored, the retention date in this field is locked against modification. Where extension (never reduction) of a retention period is desired, the last access time field be updated, wherein the new retention period is added to the existing last access time value to derive a new, later retention date for the file. Upon expiry of the retention date, the system allows deletion of the expired WORM file/data set.

公开(公告)号：CA2544846A1

公开(公告)日：2005-05-19

申请号：CA2544846

申请日：2004-04-22

Applicant: NETWORK APPLIANCE INC

Inventor： HELLER JEFFREY L ,  MCGOVERN WILLIAM P

IPC: G06F12/00 ,  G06F20060101 ,  G06F3/06 ,  G06F12/14 ,  G06F17/30 ,  G06F21/00

Abstract: This invention provides a specified retention date within a data set that is locked against deletion or modification within a WORM storage implementation. This retention date scheme does not utilize any proprietary application program interfaces (APIs) or protocols, but rather, employs native functionality within conventional file (or other data containers, data sets or block-based logical unit numbers) properties available in commonly used operating systems. In an illustrative embodiment, the retention date/time is calculated by querying the file's last-modified time prior to commit, adding the retention period to this value and thereby deriving a retention date after which the file can be released from WORM. Prior to commit, the computed retention date is stored in the file's “last access time” property/attribute field, or another metadata field that remains permanently associated with the file and that, in being used for retention date, does not interfere with file management in a WORM state. Since this field is not utilized in a WORM context, it can be adapted to store this date. Once stored, the retention date in this field is locked against modification. Where extension (never reduction) of a retention period is desired, the last access time field be updated, wherein the new retention period is added to the existing last access time value to derive a new, later retention date for the file. Upon expiry of the retention date, the system allows deletion of the expired WORM file/data set.

公开(公告)号：EP1690166A4

公开(公告)日：2009-11-04

申请号：EP04818283

申请日：2004-04-22

Applicant: NETWORK APPLIANCE INC

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L

IPC: G06F12/12 ,  G06F20060101 ,  G06F3/06 ,  G06F12/00 ,  G06F12/14 ,  G06F17/30 ,  G06F21/00

CPC classification number: G06F3/0643 ,  G06F3/0623 ,  G06F3/067 ,  G06F17/30085 ,  G06F17/30188 ,  G06F21/78 ,  G06F2216/09 ,  Y10S707/99953 ,  Y10S707/99955

公开(公告)号：EP1604260A4

公开(公告)日：2008-02-27

申请号：EP04718096

申请日：2004-03-05

Applicant: NETWORK APPLIANCE INC

Inventor： MCGOVERN WILLIAM P ,  HELLER JEFFREY L ,  WAGNER J CHRISTOPHER

IPC: G06F20060101 ,  G06F1/00 ,  G06F3/06 ,  G06F17/30

CPC classification number: G06F17/30188 ,  G06F3/0643 ,  Y10S707/99952 ,  Y10S707/99953

Abstract: A write-once-read-many (WORM) storage system (116, 160) that employs large-capacity and relatively inexpensive disks (240, 245) in connection with a file system on a file server (112) is provided. The file system contains most or all of the required WORM (116, 160) 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 (418) that, when committed to WORM storage (402), cannot be deleted or modified. Any file path or directory tree structure (418) used to identify the file within the WORM volume is locked and cannot be deleted. The administrator creates a WORM volume (302), capable of storing designated WORM files (418). The client then creates an appropriate WORM files (304) using the 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 9, (506).