JPH10275090A - Duplexing system for basic processor - Google Patents
Duplexing system for basic processorInfo
- Publication number
- JPH10275090A JPH10275090A JP9095331A JP9533197A JPH10275090A JP H10275090 A JPH10275090 A JP H10275090A JP 9095331 A JP9095331 A JP 9095331A JP 9533197 A JP9533197 A JP 9533197A JP H10275090 A JPH10275090 A JP H10275090A
- Authority
- JP
- Japan
- Prior art keywords
- basic processing
- standby
- active
- processing device
- basic
- 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.)
- Granted
Links
- 238000003860 storage Methods 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 abstract description 5
- 230000014759 maintenance of location Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、基本処理装置の二
重化方法に関し、特に基本処理装置が複数の並列配置さ
れたシステム構成等に用いて好適とされる、基本処理装
置の二重化方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for duplicating a basic processing device, and more particularly to a method for duplicating a basic processing device which is suitable for use in a system configuration in which a plurality of basic processing devices are arranged in parallel.
【０００２】[0002]
【従来の技術】従来、この種の基本処理装置（Ｂａｓｉ
ｃ Ｐｒｏｃｅｓｓｏｒ Ｕｎｉｔ）の二重化方法は、
デュプレックス構成をとることにより基本処理装置の信
頼性を高めている。例えば、外部記憶装置に接続した基
本処理装置を複数並列配置してなるシステムにおいて、
基本処理装置に障害が発生すると、当該障害が発生した
基本処理装置に接続した外部記憶装置にアクセスするこ
とができなくなる。2. Description of the Related Art Conventionally, this type of basic processing apparatus (Basi
c Processor Unit)
The reliability of the basic processing unit is enhanced by adopting a duplex configuration. For example, in a system in which a plurality of basic processing devices connected to an external storage device are arranged in parallel,
When a failure occurs in the basic processing device, it becomes impossible to access an external storage device connected to the basic processing device in which the failure has occurred.
【０００３】このような問題を防ぐための二重化方式と
して、現用系基本処理装置一台に対して待機系（予備
系）基本処理装置一台を備える二重化方式をとる構成が
用いられるが、この他にも、例えば特開昭６３−１０８
４３７号公報には、現用系基本処理装置（現用系ホス
ト）２台と、待機系基本処理装置（待機系ホスト）１台
の構成が開示されている。なお上記特開昭６３−１０８
４３７号公報には、現用系ホスト、待機系ホストが系間
障害通知プロセッサに接続され、系間障害通知プロセッ
サに障害が発生した場合でも、現用系ホストがダウンし
た時に速やかに待機系のバックアップができるようにし
たホットスタンバイシステムの障害報告方式が提案され
ている。As a redundant system for preventing such a problem, a redundant system in which one standby system (standby system) basic processor is provided for one active system basic processor is used. Also, for example, Japanese Patent Application Laid-Open No. 63-108
No. 437 discloses a configuration of two active basic processing devices (active host) and one standby basic processing device (standby host). Note that the above-mentioned JP-A-63-108
No. 437 discloses that an active host and a standby host are connected to an inter-system failure notification processor, and even when a failure occurs in the inter-system failure notification processor, a backup of the standby system is immediately performed when the active host is down. There has been proposed a failure reporting method for a hot standby system that can be used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来方式においては、現用系基本処理装置が複数台並列で
使用するシステムでは、これに応じて待機系基本処理装
置も複数台必要になり、この結果、システム構成が大規
模となってしまう、という問題点を有している。However, in the above-described conventional system, in a system in which a plurality of active basic processing units are used in parallel, a plurality of standby basic processing units are required correspondingly. However, there is a problem that the system configuration becomes large.
【０００５】その理由は、現用系１台に対して待機系が
１台、もしくは現用系が２台に対して待機系が１台必要
なシステム構成されていることによる。[0005] The reason is that there is a system configuration that requires one standby system for one active system or one standby system for two active systems.
【０００６】したがって、本発明は、上記問題点に鑑み
てなされたものであって、その目的は、基本処理装置を
複数並列で使用するシステムにおいて、待機系基本処理
装置が１台のみで二重化をサポート可能とした方式を提
供することにある。Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a system in which a plurality of basic processing devices are used in parallel, in which only one standby system basic processing device is used. The purpose is to provide a method that can be supported.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成する本発
明の基本処理装置の二重化方式は、複数（Ｎ台）の現用
系基本処理装置に対して１台の待機系基本処理装置を備
え、前記現用系基本処理装置に障害発生時、該障害が発
生した現用系基本処理装置を除くＮ−１台及び前記待機
系基本処理装置が現用系として作動するように系の切替
を行う、ことを特徴とする。According to the present invention, there is provided a duplex system for a basic processing apparatus according to the present invention, wherein one (1) standby system basic processing apparatus is provided for a plurality (N) of active system basic processing apparatuses. When a failure occurs in the active basic processing device, system switching is performed so that the N-1 units and the standby basic processing device except the active basic processing device in which the failure has occurred operate as the active system. Features.
【０００８】このように構成されてなる本発明によれ
ば、複数台（３台以上でも可）並列配置された基本処理
装置の二重化を、１台の待機系の基本処理装置でサポー
トする。According to the present invention having such a configuration, the duplication of a plurality (three or more) of basic processing devices arranged in parallel is supported by one standby basic processing device.
【０００９】[0009]
【発明の実施の形態】本発明の実施の形態について以下
に説明する。本発明は、その好ましい実施の形態におい
て、複数（Ｎ台、図１では４台）の現用系基本処理装置
（図１の１〜４）に対して１台の待機系基本処理装置
（図１の５）を備え、例えば現用系基本処理装置に障害
発生時、該障害が発生した現用系基本処理装置（図２の
３）を除くＮ−１台の現用系基本処理装置（図１２の
１、２、４）及び待機系基本処理装置（図２の５）が現
用系として作動するように外部記憶装置へアクセするス
系の切換えを行う。より具体的には、クロスコール（交
差呼出）機能を有する外部記憶装置を利用し、障害発生
後は、外部記憶装置にアクセスする系を切り替えるシシ
ステム構成をとる。Embodiments of the present invention will be described below. In a preferred embodiment of the present invention, one standby basic processing device (FIG. 1) is provided for a plurality (N, four in FIG. 1) of active system basic processing devices (1 to 4 in FIG. 1). 5), for example, when a failure occurs in the active basic processing unit, N-1 active basic processing units (1 in FIG. 12) except for the active basic processing unit (3 in FIG. 2) in which the failure has occurred. 2, 4) and the standby system basic processing device (5 in FIG. 2) are switched to access the external storage device so as to operate as the active system. More specifically, an external storage device having a cross-call (cross-call) function is used, and after a failure occurs, a system configuration for switching a system to access the external storage device is adopted.
【００１０】そして、障害が発生した現用系基本処理装
置は障害復旧時には待機系基本処理装置としてスタンバ
イ状態に設定される。The active basic processing device in which a failure has occurred is set to a standby state as a standby basic processing device when the failure is recovered.
【００１１】本発明の実施の形態においては、複数台並
列の基本処理装置の二重化をする場合に、１台の待機系
の基本処理装置で二重化をサポートすることができ、こ
のため、システム構成を増大を抑止することができる。In the embodiment of the present invention, when a plurality of parallel basic processing devices are duplicated, one standby basic processing device can support the duplication. The increase can be suppressed.
【００１２】[0012]
【実施例】上記した本発明の実施の形態について更に詳
細に説明すべく、本発明の実施例を図面を参照して以下
に説明する。以下では基本処理装置５台を並列に構成さ
れるシステムを例に説明するが、本発明において、基本
処理装置の台数は５台に限定されるものでないことは勿
論である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; Hereinafter, a system in which five basic processing devices are configured in parallel will be described as an example, but the number of basic processing devices is not limited to five in the present invention.
【００１３】図１は、本発明の一実施例のシステム構成
を示す図である。図１を参照すると、本実施例におい
て、外部記憶装置１１〜１４はクロスコール機能を有し
ている。基本処理装置１は、系Ａで外部記憶装置１１に
接続している。基本処理装置２は、系ａで外部記憶装置
１１に、系Ｂで外部記憶装置１２に接続している。FIG. 1 is a diagram showing a system configuration of an embodiment of the present invention. Referring to FIG. 1, in this embodiment, the external storage devices 11 to 14 have a cross-call function. The basic processing device 1 is connected to the external storage device 11 by the system A. The basic processing device 2 is connected to the external storage device 11 by the system a and to the external storage device 12 by the system B.
【００１４】同様にして、基本処理装置３は系ｂ、系Ｃ
でそれぞれ外部記憶装置１２、１３に接続し、基本処理
装置４は系Ｃｃ、系Ｄでそれぞれ外部記憶装置１３、１
４に接続し、基本処理装置５は系ｄで外部記憶装置１４
に接続している。Similarly, the basic processing unit 3 includes the system b and the system C
Are connected to the external storage devices 12 and 13, respectively, and the basic processing device 4 is connected to the external storage devices 13, 1
4 and the basic processing unit 5 is connected to the external storage device 14 by the system d.
Connected to
【００１５】監視装置２１は、基本処理装置１〜５と接
続し、各基本処理装置１〜５及び外部記憶装置１１〜１
４との系に障害が発生しているかを監視し、障害を検出
すると系切り替えの必要な基本処理装置に対して切り替
え指示を送出する。The monitoring device 21 is connected to the basic processing devices 1 to 5, and the basic processing devices 1 to 5 and the external storage devices 11 to 1 are connected.
The system monitors whether or not a failure has occurred in the system 4 and, when the failure is detected, sends a switching instruction to the basic processing device that requires system switching.
【００１６】次に、本発明の実施例の動作について詳細
に説明する。Next, the operation of the embodiment of the present invention will be described in detail.
【００１７】図１を参照すると、正常状態では、現用系
として基本処理装置１〜４が系Ａ、Ｂ、Ｃ、Ｄで外部記
憶装置１１〜１４にアクセスしている。また基本処理装
置５は待機系としてスタンバイしている。Referring to FIG. 1, in a normal state, the basic processing devices 1 to 4 are accessing the external storage devices 11 to 14 as systems A, B, C, and D as active systems. The basic processing device 5 is on standby as a standby system.
【００１８】図２は、本発明の実施例の動作を説明する
ための図であり、故障状態のシステム構成の一例を示す
図である。図２を参照すると、監視装置２１が基本処理
装置３の故障を検出した場合、監視装置２１は、基本処
理装置４、５に対して系の切り替え指示を出す。FIG. 2 is a diagram for explaining the operation of the embodiment of the present invention, and is a diagram showing an example of a system configuration in a failure state. Referring to FIG. 2, when the monitoring device 21 detects a failure in the basic processing device 3, the monitoring device 21 issues a system switching instruction to the basic processing devices 4 and 5.
【００１９】基本処理装置４は、今までの系Ｄからの外
部記憶装置１４へのアクセスを中止し、系ｃで外部記憶
装置１３にアクセスする。基本処理装置５は系ｄで外部
記憶装置１４にアクセスする。The basic processing unit 4 stops the access from the system D to the external storage device 14 and accesses the external storage device 13 by the system c. The basic processing device 5 accesses the external storage device 14 through the system d.
【００２０】この結果、現用系として基本処理装置１、
２、４、５がそれぞれ系Ａ、Ｂ、ｃ、ｄで外部記憶装置
１１〜１４にアクセスする。As a result, the basic processing device 1,
2, 4, and 5 access the external storage devices 11 to 14 through the systems A, B, c, and d, respectively.
【００２１】基本処理装置３が障害から復旧した場合に
は、基本処理装置１、２、４、５が現用系として動作
し、今度は基本処理装置３が待機系としてスタンバイ状
態となる。When the basic processing unit 3 recovers from the failure, the basic processing units 1, 2, 4, and 5 operate as the active system, and the basic processing unit 3 is set in the standby state as the standby system.
【００２２】次に、本発明の実施例の作用効果について
説明する。本発明の実施例では、外部記憶装置のクロス
コール機能を利用し、系を切り替えることにより、４台
の基本処理装置の二重化を待機系基本処理装置１台だけ
でサポートできるため、従来方式と較べてシステム構成
を小規模にすることができる。Next, the operation and effect of the embodiment of the present invention will be described. In the embodiment of the present invention, by using the cross-call function of the external storage device and switching the systems, the redundancy of four basic processing devices can be supported by only one standby basic processing device. Thus, the system configuration can be reduced in size.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
基本処理装置の二重化システム構成を小規模にできると
いう、効果を奏する。As described above, according to the present invention,
There is an effect that the duplex system configuration of the basic processing device can be reduced in scale.
【００２４】その理由は、本発明においては、クロスコ
ール機能を有する外部記憶装置を使用し、障害時に系を
切り替えることにより、並列型の複数台の現用系基本処
理装置を１台の待機系基本処理装置のみで二重化機能を
支援することができる、ためである。The reason is that the present invention uses an external storage device having a cross-call function and switches the system in the event of a failure, thereby connecting a plurality of parallel-type active system basic processing units to one standby system basic processing unit. This is because the duplication function can be supported only by the processing device.
【図１】本発明の一実施例を示すシステム構成を示す図
である。FIG. 1 is a diagram showing a system configuration showing one embodiment of the present invention.
【図２】本発明の一実施例の動作を説明するための図で
あり、故障状態のシステム構成の一例を示す図である。FIG. 2 is a diagram for explaining the operation of one embodiment of the present invention, and is a diagram illustrating an example of a system configuration in a failure state.
１、２、３、４、５ 基本処理装置 １１、１２、１３、１４ 外部記憶装置 ２１ 監視装置 Ａ 基本処理装置１と外部記憶装置１１の系 Ｂ 基本処理装置２と外部記憶装置１２の系 Ｃ 基本処理装置３と外部記憶装置１３の系 Ｄ 基本処理装置４と外部記憶装置１４の系 ａ 基本処理装置２と外部記憶装置１１の系 ｂ 基本処理装置３と外部記憶装置１２の系 ｃ 基本処理装置４と外部記憶装置１３の系 ｄ 基本処理装置５と外部記憶装置１４の系 1, 2, 3, 4, 5 Basic processing unit 11, 12, 13, 14 External storage device 21 Monitoring device A System of basic processing device 1 and external storage device B System of basic processing device 2 and external storage device C System of the basic processing device 3 and the external storage device 13 D System of the basic processing device 4 and the external storage device 14 a System of the basic processing device 2 and the external storage device 11 b System of the basic processing device 3 and the external storage device 12 c Basic processing The system of the device 4 and the external storage device 13 d The system of the basic processing device 5 and the external storage device 14
Claims (3)
て１台の待機系基本処理装置を備え、 前記現用系基本処理装置に障害発生時、該障害が発生し
た現用系基本処理装置を除くＮ−１台及び前記待機系基
本処理装置が現用系として作動するように系の切換えを
行う、ことを特徴とする基本処理装置の二重化方式。A plurality of (N) active basic processing units each provided with one standby basic processing unit; and when a failure occurs in the active basic processing unit, the active basic processing unit in which the failure has occurred is provided. The system is switched so that the N-1 units excluding the devices and the standby basic processing device operate as an active system.
ムにおいて、 並設された複数（Ｎ台）の現用系基本処理装置と１台の
待機系基本処理装置を備え、 複数台（Ｎ台）の外部記憶装置が第１、第２の系のうち
選択された系により前記複数の現用系基本処理装置、及
び前記待機系基本処理装置に接続可能とされ、 監視手段が前記現用系基本処理装置の一つに障害検出
時、前記外部記憶装置に対する系を必要に応じて切り換
えることにより、該障害が発生した現用系基本処理装置
を除くＮ−１台及び前記待機系基本処理装置が現用系と
して作動するように切換える、ことを特徴とする基本処
理装置の二重化方式。2. A system in which a plurality of basic processing devices are used in parallel, comprising a plurality (N) of active basic processing devices and one standby basic processing device arranged in parallel. Can be connected to the plurality of active system basic processing devices and the standby system basic processing device by a system selected from the first and second systems, and a monitoring means is provided for the active system basic processing device. When a failure is detected, the system for the external storage device is switched as needed, so that N-1 units and the standby basic processing device other than the active basic processing device in which the failure has occurred become the active system. A duplex system for a basic processing unit, which is switched to operate.
が、障害から復旧した時には、待機系基本処理装置とし
てスタンバイ状態に設定される、ことを特徴とする請求
項２記載の基本処理装置の二重化方式。3. The basic processing device according to claim 2, wherein the active basic processing device in which the failure has occurred is set to a standby state as a standby basic processing device when the failure is recovered from the failure. Redundant system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09095331A JP3085239B2 (en) | 1997-03-28 | 1997-03-28 | Redundant system of basic processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09095331A JP3085239B2 (en) | 1997-03-28 | 1997-03-28 | Redundant system of basic processing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10275090A true JPH10275090A (en) | 1998-10-13 |
| JP3085239B2 JP3085239B2 (en) | 2000-09-04 |
Family
ID=14134748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09095331A Expired - Fee Related JP3085239B2 (en) | 1997-03-28 | 1997-03-28 | Redundant system of basic processing unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3085239B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6654769B2 (en) | 2000-08-01 | 2003-11-25 | Hitachi, Ltd. | File system for creating switched logical I/O paths for fault recovery |
| KR20200068599A (en) * | 2018-12-05 | 2020-06-15 | 아즈빌주식회사 | Facility monitoring system and communication method in facility monitoring system |
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|---|---|---|---|---|
| JPS60211548A (en) * | 1984-04-06 | 1985-10-23 | Nippon Telegr & Teleph Corp <Ntt> | Switching control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6654769B2 (en) | 2000-08-01 | 2003-11-25 | Hitachi, Ltd. | File system for creating switched logical I/O paths for fault recovery |
| US7130868B2 (en) | 2000-08-01 | 2006-10-31 | Hitachi, Ltd. | File system for creating switched logical I/O paths for fault recovery |
| KR20200068599A (en) * | 2018-12-05 | 2020-06-15 | 아즈빌주식회사 | Facility monitoring system and communication method in facility monitoring system |
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| JP3085239B2 (en) | 2000-09-04 |
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