JPH0259934A - Inter-device connection switching control system for duplicated device - Google Patents

Inter-device connection switching control system for duplicated device

Info

Publication number
JPH0259934A
JPH0259934A JP63210558A JP21055888A JPH0259934A JP H0259934 A JPH0259934 A JP H0259934A JP 63210558 A JP63210558 A JP 63210558A JP 21055888 A JP21055888 A JP 21055888A JP H0259934 A JPH0259934 A JP H0259934A
Authority
JP
Japan
Prior art keywords
switch control
systems
central processing
switches
command information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63210558A
Other languages
Japanese (ja)
Inventor
Hiroshi Aso
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corp filed Critical Nec Corp
Priority to JP63210558A priority Critical patent/JPH0259934A/en
Publication of JPH0259934A publication Critical patent/JPH0259934A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To allow the states of connection switches in both systems to coincide with each other by simultaneously outputting command information from a two-system switching control part controlled from both the system to the connection switches in both the systems in each system.
CONSTITUTION: A central processing part 1 in the system A and a central processing part 2 in the system B output respective switch control signals a0, b0 to the switch control part 3. The switch control part 3 outputs command information c0 to the connection switches 5, 6 in accordance with a command outputted from the central processing part 1 or 2 in the system A or B and the switches 5, 6 switch the connection of interface signals (d), (e) respective systems in accordance with the command information c0. When the control of the switch control part 3 from the central processing parts 1, 2 is impossible, switch control signals a1, b1 are respectively outputted to the switch control part 4 and the switch control part 4 outputs command information c1 to the switches 5, 6. Consequently, the operation of the connection switches in both the systems can be allowed to coincide with each other.
COPYRIGHT: (C)1990,JPO&Japio
JP63210558A 1988-08-26 1988-08-26 Inter-device connection switching control system for duplicated device Pending JPH0259934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63210558A JPH0259934A (en) 1988-08-26 1988-08-26 Inter-device connection switching control system for duplicated device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63210558A JPH0259934A (en) 1988-08-26 1988-08-26 Inter-device connection switching control system for duplicated device

Publications (1)

Publication Number Publication Date
JPH0259934A true JPH0259934A (en) 1990-02-28

Family

ID=16591311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63210558A Pending JPH0259934A (en) 1988-08-26 1988-08-26 Inter-device connection switching control system for duplicated device

Country Status (1)

Country Link
JP (1) JPH0259934A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6647476B2 (en) 1997-01-08 2003-11-11 Hitachi, Ltd. Subsystem replacement method
US7082506B2 (en) 2001-08-08 2006-07-25 Hitachi, Ltd. Remote copy control method, storage sub-system with the method, and large area data storage system using them
US7114049B2 (en) 1997-01-08 2006-09-26 Hitachi, Ltd. Adaptive remote copy in a heterogeneous environment
US7130959B2 (en) 2000-01-28 2006-10-31 Hitachi, Ltd. Subsystems and an integrated system of these subsystems
US7143252B2 (en) 2001-05-10 2006-11-28 Hitachi, Ltd. Storage apparatus system and method of data backup
US7162598B2 (en) 1998-08-20 2007-01-09 Hitachi, Ltd. Storage system
US7167962B2 (en) 1999-08-19 2007-01-23 Hitachi, Ltd. Remote copy for a storage controller with reduced data size
US7194590B2 (en) 2001-02-28 2007-03-20 Hitachi, Ltd. Three data center adaptive remote copy
US7213114B2 (en) 2001-05-10 2007-05-01 Hitachi, Ltd. Remote copy for a storage controller in a heterogeneous environment
USRE43600E1 (en) 1996-01-10 2012-08-21 Hitachi, Ltd. External storage control device and data transfer method between external storage control devices

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE43600E1 (en) 1996-01-10 2012-08-21 Hitachi, Ltd. External storage control device and data transfer method between external storage control devices
US6950917B2 (en) 1997-01-08 2005-09-27 Hitachi, Ltd. Subsystem replacement method
US7200729B2 (en) 1997-01-08 2007-04-03 Hitachi, Ltd. Subsystem replacement method
US7114049B2 (en) 1997-01-08 2006-09-26 Hitachi, Ltd. Adaptive remote copy in a heterogeneous environment
US6647476B2 (en) 1997-01-08 2003-11-11 Hitachi, Ltd. Subsystem replacement method
US7162598B2 (en) 1998-08-20 2007-01-09 Hitachi, Ltd. Storage system
US7246214B2 (en) 1998-09-09 2007-07-17 Hitachi, Ltd. Remote copy for a storage controller with reduced data size
US7167962B2 (en) 1999-08-19 2007-01-23 Hitachi, Ltd. Remote copy for a storage controller with reduced data size
US7130959B2 (en) 2000-01-28 2006-10-31 Hitachi, Ltd. Subsystems and an integrated system of these subsystems
US7194590B2 (en) 2001-02-28 2007-03-20 Hitachi, Ltd. Three data center adaptive remote copy
US7213114B2 (en) 2001-05-10 2007-05-01 Hitachi, Ltd. Remote copy for a storage controller in a heterogeneous environment
US7143252B2 (en) 2001-05-10 2006-11-28 Hitachi, Ltd. Storage apparatus system and method of data backup
US7082506B2 (en) 2001-08-08 2006-07-25 Hitachi, Ltd. Remote copy control method, storage sub-system with the method, and large area data storage system using them

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