公开(公告)号：JP2003058325A

公开(公告)日：2003-02-28

申请号：JP2002136911

申请日：2002-05-13

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーション

Inventor： BISH JOHN EDWARD ,  DAVID ALAN BARTON

IPC: G06F3/06 ,  G06F9/00 ,  G06F9/24 ,  G06F11/10 ,  G06F15/177 ,  G11B20/10 ,  G11B20/12

CPC classification number: G06F3/0632 ,  G06F3/0613 ,  G06F3/0689 ,  G06F11/1076 ,  G06F2211/1052 ,  G06F2211/109

Abstract: PROBLEM TO BE SOLVED: To provide initialization technique in a disk array by which a connection bottleneck between a storage controller and a disk drive can be eliminated.
SOLUTION: A host system 2 transmits an input/output request to the storage device 4 via a storage subsystem 6 that manages access to the storage device 4. The storage device has hard disk drives 8a, 8b, 8c, to 8n, the storage subsystem 6 has a host bus adaptor (HBA) 10 and a PCI/Raid adaptor that enable communication with the host 2 and is further provided with a controller 20 that executes a code 22 in an EEPROM.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供可以消除存储控制器和磁盘驱动器之间的连接瓶颈的磁盘阵列中的初始化技术。 解决方案：主机系统2通过管理对存储设备4的访问的存储子系统6向存储设备4发送输入/输出请求。存储设备具有硬盘驱动器8a，8b，8c至8n，存储子系统 6具有主机总线适配器（HBA）10和能够与主机2进行通信的PCI / Raid适配器，并且还具有执行EEPROM中的代码22的控制器20。

公开(公告)号：JP2002049528A

公开(公告)日：2002-02-15

申请号：JP2001170848

申请日：2001-06-06

Applicant: IBM

Inventor： DAVID ALAN BARTON ,  EREZU WEBMAN

IPC: G06F12/08 ,  G06F12/12

Abstract: PROBLEM TO BE SOLVED: To provide a method, a system, and a program for improving the performance and data throughput by improving a cache hit, i.e., a readout request returned from a cache. SOLUTION: A method, a system, and a program for caching data are disclosed. Data from a volatile memory element or a device such as a nonvolatile storage device are held in entries in the cache. The time when each cache entry is accessed last and the frequency of access to each cache entry are indicated by variables.

公开(公告)号：JP2002023963A

公开(公告)日：2002-01-25

申请号：JP2001127162

申请日：2001-04-25

Applicant: IBM

Inventor： DAVID ALAN BARTON ,  MORTON ROBERT LOUIS

IPC: G06F13/14 ,  G06F3/06 ,  G06F12/02

Abstract: PROBLEM TO BE SOLVED: To provide a method, a system, a program, and data structure for selecting a pass at least to either one of two controllers. SOLUTION: Pass information indicating a desirable controller to be used for accessing respective storage areas is received from a controller. An input/ output(I/O) command sent to a target storage area is sent to a controller indicated as the desirable controller for the target storage area in the pass information. The pass information to the storage area controller for providing an access to a storage area is encoded by information for specifying one controller as a desirable controller and the other controller as an undesirable controller. The encoded pass information is returned to a request side computer. The request side computer sends the I/O command to the desirable controller at first, and when the desirable controller can not execute the I/O command, sends the I/O command to the undesirable controller.