公开(公告)号：JP2004038932A

公开(公告)日：2004-02-05

申请号：JP2003080011

申请日：2003-03-24

Applicant: Network Appliance Inc ,  ネットワーク・アプライアンス・インコーポレイテッド

Inventor： LEONG JAMES ,  SUNDARAM RAJESH ,  DOUCETTE DOUGLAS P ,  SCHOENTHAL SCOTT ,  STRANGE STEPHEN H ,  VISWANATHAN SRINIVASAN

IPC: G06F3/06 ,  G06F9/00 ,  G06F11/20

CPC classification number: G06F3/0601 ,  G06F3/061 ,  G06F3/0611 ,  G06F3/0655 ,  G06F3/0659 ,  G06F3/0689 ,  G06F9/4881 ,  G06F11/2087

Abstract: PROBLEM TO BE SOLVED: To implement an I/O task architecture in which a data access request (for example, stripe writing) is decomposed into a plurality of independently schedulable lower-level synchronous I/O tasks. SOLUTION: Resources needed by lower-level I/O tasks are dynamically assigned, as needed, for effective load and resource use balance to thereby achieve high scalability. A hierarchical order is assigned to the I/O tasks to ensure that there is a forward progression of their higher-level I/O task and to ensure that resources do not become deadlocked. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003296038A

公开(公告)日：2003-10-17

申请号：JP2003080010

申请日：2003-03-24

Applicant: Network Appliance Inc ,  ネットワーク・アプライアンス・インコーポレイテッド

Inventor： KLEIMAN STEVEN R ,  SUNDARAM RAJESH ,  DOUCETTE DOUGLAS P ,  STRANGE STEPHEN H ,  VISWANATHAN SRINIVASAN

IPC: G06F3/06 ,  G06F11/10

CPC classification number: G06F3/0613 ,  G06F3/0643 ,  G06F3/0655 ,  G06F3/0689 ,  G06F11/1076

Abstract: PROBLEM TO BE SOLVED: To provide a method for controlling storage of data in a plurality of storage devices, for example, in a RAID array. SOLUTION: This method includes receiving a plurality of write requests associated with data and buffering the write requests. A file system defines a group of storage blocks, responsive to disk topology information. The group includes a plurality of storage blocks in each of the plurality of storage devices. Each data block of the data to be written is associated with a respective one of the storage blocks, for transmitting the association to the plurality of storage devices. COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：提供一种用于控制例如在RAID阵列中的多个存储设备中的数据存储的方法。 解决方案：该方法包括接收与数据相关联的多个写入请求并缓冲写入请求。 文件系统根据磁盘拓扑信息定义一组存储块。 该组包括多个存储装置中的每一个中的多个存储块。 要写入的数据的每个数据块与相应的一个存储块相关联，用于将关联发送到多个存储设备。 版权所有（C）2004，JPO

公开(公告)号：WO03009286A3

公开(公告)日：2003-09-12

申请号：PCT/US0151321

申请日：2001-10-25

Applicant: NETWORK APPLIANCE INC

Inventor： KAHN ANDY ,  SUNDARAM RAJESH ,  VISWANATHAN SRINIVASAN ,  KLEIMAN STEVEN R

IPC: G06F11/10 ,  G11B20/18 ,  H03M13/09

CPC classification number: G06F11/1076 ,  G11B20/18 ,  H03M13/096

Abstract: A method and apparatus for a reliable data storage system using block level checksums appended to data blocks. Files are stored on hard disks in storage blocks, including data blocks and block-appended checksums. The block-appended checksum includes a checksum of the data block, a VBN, a DBN, and an embedded checksum for checking the integrity of the block-appended checksum itself. A file system includes file blocks with associated block-appended checksum to the data blocks. The file blocks with block-appended checksums are written to storage blocks. In a preferred embodiment a collection of disk drives are formatted with 520 bytes of data per sector. For each 4,096-byte file block, a corresponding 64-byte block-appended checksum is appended to the file block with the first 7 sectors including most of the file block data while the 8th sector includes the remaining file block data and the 64-byte block-appended checksum.

Abstract translation: 一种使用附加到数据块的块级校验和的可靠数据存储系统的方法和装置。 文件存储在存储块中的硬盘上，包括数据块和块附加校验和。 块附加的校验和包括数据块的校验和，VBN，DBN和用于检查块附加校验和本身的完整性的嵌入校验和。 文件系统包括具有与数据块相关联的块附加校验和的文件块。 具有块附加校验和的文件块被写入存储块。 在优选实施例中，磁盘驱动器的集合被格式化为每扇区520字节的数据。 对于每个4,096字节的文件块，相应的64字节的块附加校验和被附加到文件块，前7个扇区包括大部分文件块数据，而第8个扇区包括剩余的文件块数据和64字节 块附加校验和。