公开(公告)号：BR9005995A

公开(公告)日：1991-09-24

申请号：BR9005995

申请日：1990-11-27

Applicant: IBM

Inventor： BAILEY CHRISTOPHER JOHN ,  COX MICHAEL CHARLES ,  CWIAKALA RICHARD ,  DIRKS LYNN MARIE ,  FIRM WILLIAM ROBERT ,  FISHER GARY ALLEN ,  GALLAGHER ROBERT JOHN ,  HOPPE KARL HELMUTH JOHN ,  KANIA PETER IGNATIUS ,  VALLEE LAWRAINE JOSEPHINE

IPC: G06F13/14 ,  G06F13/40 ,  G06F15/173 ,  G06F13/20

Abstract: A computer system, including at least one host (processor and operating system), a channel subsystem and at least one switch (together with an associated switch controller) for switchably connecting an I/O device (together with an associated I/O device control unit) to a host via said channel subsystem, in combination with means for dynamically managing I/O connectivity in said computer from each host. The I/O manager's functions are centralized at the host level across the computer system. Each host is responsible for an instance of the manager. According to the preferred embodiment of the invention the computer system, I/O manager combination includes: (a) first means, located within each switch, for providing direct host access to the switch controller associated with a given switch; (b) second means, included in each host level instance of the manager, for automatically and dynamically determining the current I/O configuration and connectivity of each host; (c) third means, included in each host level instance of the manager, for performing System Integrated Switching (i.e., switching where any instance of the I/O manager can veto a proposed configuration change) and (d) fourth means, included in each host level instance of the manager, for insuring the integrity of the I/O connectivity database, through the use of an interlock mechanism, in a multiuser environment where each user can enter multiple part commands and processes concurrently.

公开(公告)号：DE69032673T2

公开(公告)日：1999-05-27

申请号：DE69032673

申请日：1990-11-28

Applicant: IBM

Inventor： BAILEY CHRISTOPHER JOHN ,  COX MICHAEL CHARLES ,  CWIAKALA RICHARD ,  DIRKS LYNN MARIE ,  FIRM WILLIAM ROBERT ,  FISHER GARY ALLEN ,  GALLAGHER ROBERT JOHN ,  HOPPE KARL HELMUTH JOHN ,  KANIA PETER IGNATIUS ,  VALLEE LAWRAINE JOSEPHINE

IPC: G06F13/14 ,  G06F13/40 ,  G06F15/173 ,  G06F15/16 ,  G06F13/12

Abstract: A computer system, including at least one host (processor and operating system), a channel subsystem and at least one switch (together with an associated switch controller) for switchably connecting an I/O device (together with an associated I/O device control unit) to a host via said channel subsystem, in combination with means for dynamically managing I/O connectivity in said computer from each host. The I/O manager's functions are centralized at the host level across the computer system. Each host is responsible for an instance of the manager. According to the preferred embodiment of the invention the computer system, I/O manager combination includes: (a) first means, located within each switch, for providing direct host access to the switch controller associated with a given switch; (b) second means, included in each host level instance of the manager, for automatically and dynamically determining the current I/O configuration and connectivity of each host; (c) third means, included in each host level instance of the manager, for performing System Integrated Switching (i.e., switching where any instance of the I/O manager can veto a proposed configuration change) and (d) fourth means, included in each host level instance of the manager, for insuring the integrity of the I/O connectivity database, through the use of an interlock mechanism, in a multiuser environment where each user can enter multiple part commands and processes concurrently.

公开(公告)号：DE69032673D1

公开(公告)日：1998-10-29

申请号：DE69032673

申请日：1990-11-28

Applicant: IBM

Inventor： BAILEY CHRISTOPHER JOHN ,  COX MICHAEL CHARLES ,  CWIAKALA RICHARD ,  DIRKS LYNN MARIE ,  FIRM WILLIAM ROBERT ,  FISHER GARY ALLEN ,  GALLAGHER ROBERT JOHN ,  HOPPE KARL HELMUTH JOHN ,  KANIA PETER IGNATIUS ,  VALLEE LAWRAINE JOSEPHINE

IPC: G06F13/14 ,  G06F13/40 ,  G06F15/173 ,  G06F15/16 ,  G06F13/12

Abstract: A computer system, including at least one host (processor and operating system), a channel subsystem and at least one switch (together with an associated switch controller) for switchably connecting an I/O device (together with an associated I/O device control unit) to a host via said channel subsystem, in combination with means for dynamically managing I/O connectivity in said computer from each host. The I/O manager's functions are centralized at the host level across the computer system. Each host is responsible for an instance of the manager. According to the preferred embodiment of the invention the computer system, I/O manager combination includes: (a) first means, located within each switch, for providing direct host access to the switch controller associated with a given switch; (b) second means, included in each host level instance of the manager, for automatically and dynamically determining the current I/O configuration and connectivity of each host; (c) third means, included in each host level instance of the manager, for performing System Integrated Switching (i.e., switching where any instance of the I/O manager can veto a proposed configuration change) and (d) fourth means, included in each host level instance of the manager, for insuring the integrity of the I/O connectivity database, through the use of an interlock mechanism, in a multiuser environment where each user can enter multiple part commands and processes concurrently.