JPH02263251A - Duplex control method for auxiliary storage device of computer system - Google Patents

Duplex control method for auxiliary storage device of computer system

Info

Publication number
JPH02263251A
JPH02263251A JP1084513A JP8451389A JPH02263251A JP H02263251 A JPH02263251 A JP H02263251A JP 1084513 A JP1084513 A JP 1084513A JP 8451389 A JP8451389 A JP 8451389A JP H02263251 A JPH02263251 A JP H02263251A
Authority
JP
Japan
Prior art keywords
auxiliary storage
storage device
processor
storage devices
central processing
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
JP1084513A
Other languages
Japanese (ja)
Inventor
Takeshi Niifuku
新福 健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1084513A priority Critical patent/JPH02263251A/en
Publication of JPH02263251A publication Critical patent/JPH02263251A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the load of a processor of a CPU and to attain the auto matic duplex control of an auxiliary storage device with no intervention of an operator by using a processor of the auxiliary storage device to perform the grater part of process for duplex control of the auxiliary storage device. CONSTITUTION:A processor 4 of a CPU 1 writes data to both working and spare auxiliary storage devices 2 and 3 and reads data out of the storage device 2. Then the processor 4 perform the switch between both storage devices 2 and 3 when the communication is unable between the processor 4 and a processor 11 of the storage device 2 or the occurrence of a fault is reported from the processor 11. Then the processor 11 and a processor 12 of the storage 3 always monitor whether the storage devices 2 and 3 have faults or not and informs the processor 4 of the occurrence of faults if detected. In such a way, the processors 11 and 12 are added to the duplex storage devices 2 and 3 respectively to perform the greater part of process for the duplex control. As a result, the processing load of the processor 4 can be reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は計算機システムの補助記憶装置2重化管理方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for managing redundant auxiliary storage devices in a computer system.

〔従来の技術〕[Conventional technology]

第2図は例えば特開昭62−115555号公報に示さ
れた計算システムの構成図であり、図において、(1)
は中央処理装置、(2)および(3)は補助記憶装置を
示し、中央処理装置(1)のプロセッサ(4)により2
重化制御部(7)を介して補助記憶装置(2) 、 (
3)のメモリ(5) 、 (6)を制御するようになさ
れている。
FIG. 2 is a configuration diagram of a calculation system disclosed in, for example, Japanese Patent Application Laid-open No. 115555/1982. In the figure, (1)
is the central processing unit, (2) and (3) are auxiliary storage devices, and the processor (4) of the central processing unit (1)
The auxiliary storage device (2), (
3), the memories (5) and (6) are controlled.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来の計算機システムは以上のように構成されているた
め、中央処理装置(1)のプロセッサ(4)は、常に補
助記憶装置(2) 、 (3)の状態を監視しなくては
ならず、補助記憶装置(2) 、 (3)のうち1台が
故障または保守・点検等によりシステムから切り離され
、その後故障が復旧または保守・点検が終了したときに
再度システムに接続する場合には、運転中の補助記憶装
置から故障が復旧または保守・点検が終了した補助記憶
装置に対して内容を一致させるためのコピーを行ない、
再び2重化運転を再開するという処理を行なわなければ
ならず処理の負担が大きかった。
Since conventional computer systems are configured as described above, the processor (4) of the central processing unit (1) must constantly monitor the status of the auxiliary storage devices (2) and (3). If one of the auxiliary storage devices (2) and (3) is disconnected from the system due to a failure or maintenance/inspection, and then is reconnected to the system when the failure is recovered or maintenance/inspection is completed, the operation A copy is made from the internal auxiliary storage device to the auxiliary storage device for which the failure has been recovered or maintenance/inspection has been completed to match the contents.
The process of restarting the duplex operation was a heavy burden.

この発明は上記のような従来のもののためになされたも
ので、2重化されている補助記憶装置にそれぞれプロセ
ッサを持たせ、2重化制御の大部分の処理を補助記憶装
置のプロセッサで行なわせて中央処理装置のプロセット
の処理負担を軽減することができる計算機システムの補
助記憶装置2重化管理方法を提供するものである。
This invention was made for the above-mentioned conventional system, in which each duplexed auxiliary storage device is provided with a processor, and most of the processing for duplication control is performed by the processor of the auxiliary storage device. The present invention also provides a method for managing redundant auxiliary storage devices in a computer system, which can reduce the processing load on a processor of a central processing unit.

〔課題を解決するための手段〕[Means to solve the problem]

この発明に係る計算機システムの補助記憶装置2重化管
理方法は1つまたは複数の中央処理装置と2重化されて
いる補助記憶装置とからなり、2皿化されている補助記
憶装置にそれぞれプロセッサを持たせ、中央処理装置と
2重化されている補助記憶装置のプロセッサ間で互いに
通信可能にすると共に、上記中央処理装置のプロセッサ
は、データの書き込みは上記2重化された両方の補助記
憶装置に対して行ない、データの読み出しは上記2重化
されたどちらか一方の補助記憶装置から行ない、一方の
補助記憶装置のプロセッサとの通信が不能になるかまた
は一方の補助記憶装置のプロセッサから障害発生の通知
があったときには、もう一方の補助記憶装置からデータ
の読み出しを行ない、補助記憶装置内部の障害はその補
助記憶装置のプロセッサが検出し、障害のあった補助記
憶装置が復旧してシステムに接続されると上記復旧した
補助記憶装置のプロセッサが他方の正常動作中の補助記
憶装置のプロセッサと通信し、上記他方の正常動作中の
補助記憶装置のデータの内容を上記復旧した補助記憶装
置にコピーして補助記憶装置の2重化運転を再開するも
のである。
A redundant auxiliary storage management method for a computer system according to the present invention comprises one or more central processing units and a redundant auxiliary storage, and each of the two auxiliary storages has a processor. The central processing unit and the processors of the duplicated auxiliary storage devices can communicate with each other, and the processor of the central processing unit writes data to both of the duplicated auxiliary storage devices. data is read from one of the duplicated auxiliary storage devices, and if communication with the processor of one auxiliary storage device becomes impossible or the data is read from the processor of one of the auxiliary storage devices. When a fault occurrence notification is received, data is read from the other auxiliary storage device, the fault inside the auxiliary storage device is detected by the processor of that auxiliary storage device, and the faulty auxiliary storage device is recovered. When connected to the system, the processor of the restored auxiliary storage device communicates with the processor of the other normally operating auxiliary storage device, and transfers the data contents of the other normally operating auxiliary storage device to the restored auxiliary storage device. The data is copied to the device and redundant operation of the auxiliary storage device is restarted.

〔作用〕[Effect]

この発明において、中央処理装置のプロセッサは、デー
タの書き込みは現用・予備両方の補助記憶装置に対して
行ない、データの読み出しは現用補助記憶装置から行な
い、現用補助記憶装置のプロセッサとの通信が不能にな
るかまたは現用補助記憶装置のブセッサから障害発生の
通知があったときに現用・予備の補助記憶装置の切り換
えを行なう。
In this invention, the processor of the central processing unit writes data to both the current and backup auxiliary storage devices, reads data from the current auxiliary storage device, and is unable to communicate with the processor of the current auxiliary storage device. The current and standby auxiliary storage devices are switched when the current auxiliary storage device becomes active or a failure occurrence notification is received from the processor of the current auxiliary storage device.

また、補助記憶装置のプロセッサは各自の補助記憶装置
に障害が発生していないか常に監視し、障害が発生する
と中央処理装置のプロセッサに通知する。障害のあった
補助記憶装置が復旧してシステムに接続されるとその補
助記憶装置のプロセッサが現用補助記憶装置のプロセッ
サと通信し、現用補助記憶装置のデータの内容をコピー
して予備補助記憶装置として運転を再開する。
Furthermore, the processors of the auxiliary storage devices constantly monitor whether or not a fault has occurred in their own auxiliary storage device, and notify the processor of the central processing unit when a fault occurs. When the failed auxiliary storage device is restored and connected to the system, the processor of that auxiliary storage device communicates with the processor of the current auxiliary storage device, copies the data contents of the current auxiliary storage device, and transfers the data to the spare auxiliary storage device. resumed driving as

〔実施例〕〔Example〕

以下、この発明を第2図と同一部分を同一符号を付して
示す第1図に基づいて説明する。第1図は、この発明を
適用した場合の計算機システムのブロック図であり、(
1)は中央処理装置、(2)および(3)は補助記憶装
置、(4) 、 (11)および(12)はプロセッサ
、(5)および(6)はメモリ、(8) 、 (9)お
よび(10)はプロセッサ間インターフェースであり、
各プロセッサ(4) 、 (tt) 、 (12)はプ
ロセッサ間インターフェース(8) 、 (9) 、 
(10)を介して互いに通信可能である。
Hereinafter, the present invention will be explained based on FIG. 1, in which the same parts as in FIG. 2 are denoted by the same reference numerals. FIG. 1 is a block diagram of a computer system to which this invention is applied;
1) is a central processing unit, (2) and (3) are auxiliary storage devices, (4) , (11) and (12) are processors, (5) and (6) are memories, (8) and (9) and (10) is an inter-processor interface,
Each processor (4), (tt), (12) has an inter-processor interface (8), (9),
They can communicate with each other via (10).

補助記憶装置(2)を現用、補助記憶装置(3)を予備
とし、中央処理装置(1)のプロセッサ(4)は現用補
助記憶装置(2)のメモリ(5)からデータの読み出し
を行なう。データの書き込みは、現用・予備の両方の補
助記憶装置(2) 、 (3)のメモリ(5)。
The auxiliary storage device (2) is currently used, and the auxiliary storage device (3) is used as a spare, and the processor (4) of the central processing unit (1) reads data from the memory (5) of the current auxiliary storage device (2). Data is written to the memory (5) of both the active and spare auxiliary storage devices (2) and (3).

(6)の内容を同一にするために現用・予備の両方の補
助記憶装置(2) 、 (3)に対して行なう。
In order to make the contents of (6) the same, this is done for both the current and spare auxiliary storage devices (2) and (3).

各補助記憶装置(2) 、 (3)のプロセッサ(11
)。
Processor (11) of each auxiliary storage device (2), (3)
).

(10)には各自の補助記憶装置(2) 、 (3)に
障害が発生していないか常に監視し、障害発生時には中
央処理装置(1)のプロセッサ(4)にその旨を通知す
る。中央処理装置(1)のプロセッサ(4)は現用補助
記憶装置(2)のプロセッサ(11)との通信が不能に
なるか、または現用補助記憶装置(2)のプロセッサ(
11)から障害発生の通知を受けると予備補助記憶装置
(3)を現用に切り替える。
(10) always monitors whether or not a failure has occurred in each of the auxiliary storage devices (2) and (3), and when a failure occurs, notifies the processor (4) of the central processing unit (1) to that effect. The processor (4) of the central processing unit (1) becomes unable to communicate with the processor (11) of the current auxiliary storage device (2), or the processor (4) of the current auxiliary storage device (2) loses communication with the processor (11) of the current auxiliary storage device (2).
11), it switches the spare auxiliary storage device (3) to the current one.

補助記憶装置(2)の障害が復旧して再びシステムに接
続されると補助記憶装置(2)のプロセッサ(11)は
補助記憶装置(3)のプロセッサ(12)と通信し、メ
モリ(6)の内容をメモリ(5)にコピーする。また、
このコピーの間、中央処理装置(1)のプロセッサ(4
)から補助記憶装置(2) 、 (3)のメモリ(5)
 、 (6)へ書き込み処理が発生した場合、両方の補
助記憶装置(2) 、 (3)のメモリ(5) 、 (
6)に対して書き込みが行なわれ、かつ、復旧中の補助
記憶装置(2)は上記中央処理(1)からの書き込みが
あったメモリりの領域については、もう一方の補助記憶
装置(3)からのコピー書き込みを行なわないように制
御する。以上の動作により、コピーが終了した時点で両
方の補助記憶装置(2) 、 (3)のメモリ(5) 
、 (6)の内容を一致させること゛ができる。
When the auxiliary storage device (2) recovers from the fault and is connected to the system again, the processor (11) of the auxiliary storage device (2) communicates with the processor (12) of the auxiliary storage device (3), and the memory (6) Copy the contents of to memory (5). Also,
During this copying, the processor (4) of the central processing unit (1)
) to auxiliary storage (2), (3) memory (5)
, (6), the memory (5), ( of both auxiliary storage devices (2), (3)
6), and the auxiliary storage device (2) that is currently being restored is the other auxiliary storage device (3) for the area of memory where the write from the central processing (1) was performed. Controls not to perform copy writing from. As a result of the above operations, when the copy is completed, the memory (5) of both auxiliary storage devices (2) and (3)
, it is possible to match the contents of (6).

〔発明の効果] 以上のようにこの発明では、補助記憶装置の2重化制御
の大部分の処理を補助記憶装置のプロセッサが行なうの
で、中央処理装置のプロセッサの処理の負担を軽減する
ことができるとともに、補助記憶装置の2重化管理がオ
ペレータの介在無しに自動的に行なえる。
[Effects of the Invention] As described above, in this invention, since the processor of the auxiliary storage device performs most of the processing of duplication control of the auxiliary storage device, the processing load on the processor of the central processing unit can be reduced. In addition, duplication management of auxiliary storage devices can be performed automatically without operator intervention.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明方法を説明する計算機システムのブロ
ック図、第2図は従来の計算機システムのブロック図で
ある。 図において、(1)は中央処理装置、(2)および(3
)は補助記憶装置、(4) 、 (u)および(12)
はプロセッサ、(5)および(6)はメモリ、(7)は
2重化制御部、(8) 、 (9)および(10)はプ
ロセッサ間インターフェースである。 なお、各図中、同一符号は同−又は相当部分を示す。
FIG. 1 is a block diagram of a computer system for explaining the method of this invention, and FIG. 2 is a block diagram of a conventional computer system. In the figure, (1) is the central processing unit, (2) and (3
) are auxiliary storage devices, (4), (u) and (12)
is a processor, (5) and (6) are memories, (7) is a duplication control unit, and (8), (9) and (10) are inter-processor interfaces. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] 1つまたは複数の中央処理装置と2重化されている補助
記憶装置とからなり、2重化されている補助記憶装置に
それぞれプロセッサを持たせ、中央処理装置と2重化さ
れている補助記憶装置のプロセッサ間で互いに通信可能
にすると共に、上記中央処理装置のプロセッサは、デー
タの書き込みは上記2重化された両方の補助記憶装置に
対して行ない、データの読み出しは上記2重化されたど
ちらか一方の補助記憶装置から行ない、一方の補助記憶
装置のプロセッサとの通信が不能になるかまたは一方の
補助記憶装置のプロセッサから障害発生の通知があった
ときには、もう一方の補助記憶装置からデータの読み出
しを行ない、補助記憶装置内部の障害はその補助記憶装
置のプロセッサが検出し、障害のあった補助記憶装置が
復旧してシステムに接続されると上記復旧した補助記憶
装置のプロセッサが他方の正常動作中の補助記憶装置の
プロセッサと通信し、上記他方の正常動作中の補助記憶
装置のデータの内容を上記復旧した補助記憶装置にコピ
ーして補助記憶装置の2重化運転を再開することを特徴
とする計算機システムの補助記憶装置2重化管理方法。
Consisting of one or more central processing units and a duplicated auxiliary storage device, each of the duplicated auxiliary storage devices has a processor, and the central processing unit and duplicated auxiliary storage device In addition to enabling the processors of the device to communicate with each other, the processor of the central processing unit writes data to both of the duplicated auxiliary storage devices, and reads data to both of the duplicated auxiliary storage devices. If communication with the processor of one auxiliary storage device becomes impossible or a failure notification is received from the processor of one auxiliary storage device, the processing is performed from the other auxiliary storage device. When data is read, a fault inside the auxiliary storage device is detected by the processor of the auxiliary storage device, and when the failed auxiliary storage device is recovered and connected to the system, the processor of the recovered auxiliary storage device detects the fault inside the auxiliary storage device. communicates with the processor of the normally operating auxiliary storage device, copies the data contents of the other normally operating auxiliary storage device to the recovered auxiliary storage device, and restarts the redundant operation of the auxiliary storage device. A method for managing redundant auxiliary storage devices in a computer system, characterized in that:
JP1084513A 1989-04-03 1989-04-03 Duplex control method for auxiliary storage device of computer system Pending JPH02263251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1084513A JPH02263251A (en) 1989-04-03 1989-04-03 Duplex control method for auxiliary storage device of computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1084513A JPH02263251A (en) 1989-04-03 1989-04-03 Duplex control method for auxiliary storage device of computer system

Publications (1)

Publication Number Publication Date
JPH02263251A true JPH02263251A (en) 1990-10-26

Family

ID=13832719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1084513A Pending JPH02263251A (en) 1989-04-03 1989-04-03 Duplex control method for auxiliary storage device of computer system

Country Status (1)

Country Link
JP (1) JPH02263251A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011108007A (en) * 2009-11-18 2011-06-02 Internatl Business Mach Corp <Ibm> System formed by optical interconnection, method, io controller, memory unit, optical rink, and method of manufacturing the optical link (redundant storage fored with loop between two x type couplers)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011108007A (en) * 2009-11-18 2011-06-02 Internatl Business Mach Corp <Ibm> System formed by optical interconnection, method, io controller, memory unit, optical rink, and method of manufacturing the optical link (redundant storage fored with loop between two x type couplers)
US8521916B2 (en) 2009-11-18 2013-08-27 International Business Machines Corporation Method and system for connecting a host and multiple storage devices formed by optical interconnects and optical link creation method

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