公开(公告)号：JP2005190464A

公开(公告)日：2005-07-14

申请号：JP2004331120

申请日：2004-11-15

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International Business Maschines Corporation

Inventor： CORONADO JUAN A ,  KALOS MATTHEW J ,  NORDAHL DONALD M ,  RIPBERGER RICHARD A

IPC: G06F13/10 ,  G06F3/06 ,  G06F12/00 ,  G06F12/14 ,  G06F13/14 ,  G06F17/30 ,  G06F21/24

CPC classification number: G06F3/0637 ,  G06F3/0605 ,  G06F3/0689

Abstract: PROBLEM TO BE SOLVED: To provide a method for controlling access to logical volumes disposed in an information storage and retrieval system in using parallel access volumes. SOLUTION: N pieces of host computer groups and N pieces of logical volume groups are formed. The method creates a parallel access volume having an alias, and persistently associates the parallel access volume with an original base logical volume, where the original base logical volume may be assigned to one of N pieces of logical volume groups or released from assignment. If the base logical volume is assigned to the (i)-th logical volume group, the method permits each host computer assigned to the (i)-th host computer group to access the original base logical volume, or the current base logical volume, associated with the parallel access volume. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于控制访问信息存储和检索系统中使用并行访问卷的逻辑卷的访问的方法。 解决方案：形成N个主计算机组和N个逻辑卷组。 该方法创建具有别名的并行访问卷，并且将并行访问卷与原始基本逻辑卷持久地关联，其中原始基本逻辑卷可以被分配给N个逻辑卷组中的一个或从分配中释放。 如果基本逻辑卷被分配给第（i）个逻辑卷组，则该方法允许分配给第（i）个主机计算机组的每个主机计算机访问原始基本逻辑卷或当前基本逻辑卷， 与并行访问卷相关联。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2010079916A

公开(公告)日：2010-04-08

申请号：JP2009255670

申请日：2009-11-09

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International Business Maschines Corporation

Inventor： CORONADO JUAN A ,  KALOS MATTHEW J ,  NORDAHL DONALD M ,  RIPBERGER RICHARD A

IPC: G06F13/10 ,  G06F3/06 ,  G06F12/00 ,  G06F12/14 ,  G06F13/14 ,  G06F17/30 ,  G06F21/24

CPC classification number: G06F3/0637 ,  G06F3/0605 ,  G06F3/0689

Abstract: PROBLEM TO BE SOLVED: To provide a method to control access to logical volumes disposed in an information storage and retrieval system using parallel access volumes. SOLUTION: The method provides an information storage and retrieval system comprising a plurality of logical volumes, and a plurality of host computers, where each host computers is capable of communicating with the information storage and retrieval system. The method creates a parallel access volume having an alias, and persistently associates that parallel access volume with an original base logical volume, where the original base logical volume may be assigned to one of (N) logical volume groups. If the original base logical volume is assigned to the (i)th logical volume group, the method permits each host computers assigned to the (i)th host computer group to access the original base logical volume associated with the parallel access volume. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种使用并行访问卷来控制对设置在信息存储和检索系统中的逻辑卷的访问的方法。 解决方案：该方法提供包括多个逻辑卷的信息存储和检索系统以及多个主计算机，其中每个主机计算机能够与信息存储和检索系统进行通信。 该方法创建具有别名的并行访问卷，并且将该并行访问卷与原始基本逻辑卷持久地关联，其中原始基本逻辑卷可以被分配给（N个）逻辑卷组之一。 如果原始基本逻辑卷被分配给第（i）个逻辑卷组，则该方法允许分配给第（i）个主机计算机组的每个主机计算机访问与并行访问卷相关联的原始基础逻辑卷。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：CA2046720A1

公开(公告)日：1992-03-01

申请号：CA2046720

申请日：1991-07-10

Applicant: IBM

Inventor： BEARDSLEY BRENT C ,  BELLO KEITH A ,  BENHASE MICHAEL T ,  CLARK FLORENCE J ,  HUNTER PAUL W ,  NORDAHL DONALD M

IPC: G06F13/12 ,  G06F3/06

Abstract: A control unit (12) for DASD operation to transfer data between the device (13) and a buffer (16) and between a channel (11) and a buffer (16). In that manner the channel and device are enabled to transfer data independently of each other. Mechanisms are provided for communication between the channel interface process in the control unit and the device interface process in the control unit. Some of these mechanisms are stored with the record in the buffer and others are stored in control storage. Principle communicating mechanisms include a device record pointer, a channel record pointer, a next operation field, a device state indicator, record control flags, and two buffer pointers.