JP2003085017A5

JP2003085017A5 -

Info

Publication number: JP2003085017A5
Application number: JP2001274424A
Authority: JP
Filing date: 2001-09-11
Publication date: 2005-06-09
Anticipated expiration: 2021-09-11

Description

ＣＰＵはこれを受けてレコード１のＷＲＵＰＤのデータフレーム（WRUPD#1 DATA）をＭＣＵに対して送信する（２１２）。ＭＣＵはこれを受けたタイミングでディスク駆動装置の当該トラックのレコード１から書き込みがあることを示すコマンドフレーム（WR CMD）をＲＣＵに対して送信する（２５１）。 In response to this, the CPU transmits a WRUPD data frame (WRUPD # 1 DATA) of record 1 to the MCU (212). At this time, the MCU transmits a command frame (WR CMD) indicating that there is writing from the record 1 of the track of the disk drive to the RCU (251).

【図面の簡単な説明】
【図１】ファイバープロトコルを用いたリモートコピーシステムの構成を示す図である。
【図２】ＥＳＣＯＮプロトコル上でのＣＰＵとＭＣＵ間の動作シーケンス及び、ＭＣＵからＲＣＵ側へのデータ転送タイミングと動作シーケンスを示す図である。
【図３】フレームの受信からの全体的な処理フローを示した図である。
【図４】フレームの受信からの全体的な処理フローを示した図である。
【図５】受信したフレーム内のコマンド情報及び、パラメタ情報からリモートコピー要否を解析するフローを示した図である。
【図６】デバイスレベルのフレームフォーマットとヘッダ変換処理で変換対象となる情報を示した図である。
【図７】本発明を適用した時のＣＰＵとＭＣＵ間の動作シーケンス及び、ＭＣＵからＲＣＵ側へのデータ転送タイミングと動作シーケンスを示す図である。
【符号の説明】
１０１・・・中央処理装置（ＣＰＵ）
１０２・・・マスタ側ディスク制御装置（ＭＣＵ）
１０３・・・マスタ側のディスク駆動装置
１０４・・・リモート側ディスク制御装置（ＲＣＵ）
１０５・・・リモート側のディスク駆動装置
１０６・・・ディレクタ装置
１０７・・・ＣＰＵとディレクタ装置間を接続するファイバーケーブル
１０８・・・ディレクタ装置とＭＣＵ間を接続するファイバーケーブル
１０９・・・ディレクタ装置とＲＣＵを接続するファイバーケーブル
１１１・・・受信バッファ
１１２・・・送信バッファ
１１３・・・内部バッファ
１１４・・・ＣＡＣＨＥ
１１５・・・ファイバープロトコル制御部
１１６・・・チャネルアダプタ制御部
１１７・・・ディスクアダプタ制御部。 Brief Description of the Drawings
1 is a diagram showing a configuration of a remote copy system using a fiber protocol.
[2] Operation sequence between the CPU and the MCU on the ESCON protocol and a diagram showing a data transfer timing and operation sequence from the MCU to the RCU side.
FIG. 3 is a diagram showing an overall processing flow from reception of a frame.
FIG. 4 is a diagram showing an overall processing flow from reception of a frame.
FIG. 5 is a diagram showing a flow for analyzing the necessity of remote copy from command information and parameter information in a received frame.
FIG. 6 is a diagram showing information to be converted in a device level frame format and header conversion processing.
[7] Operation sequence and between the CPU and the MCU of applying the present invention, is a diagram illustrating data transfer timing and operation sequence from the MCU to the RCU side.
[Description of the code]
101: Central processing unit (CPU)
102 · · · Master side disk control unit (MCU)
103: Master disk drive 104: Remote disk controller (RCU)
105 Remote disk drive device 106 Director device 107 Fiber cable 108 connecting between CPU and director device Fiber cable 109 connecting director device and MCU Fiber cable 111 that connects the RCU with the RCU: Receive buffer 112: Transmit buffer 113: Internal buffer 114: CACHE
115: Fiber protocol control unit 116: Channel adapter control unit 117: Disk adapter control unit .

Claims

A data guarantee system comprising a central processing unit and a master side disk unit connected by a fiber cable, a master side disk unit and a remote side disk unit connected by the fiber cable, and the master side disk unit having a header conversion circuit Processing the frame of the writing process issued from the central processing unit to the master side disk unit in the master side disk unit, and in parallel with the processing, using the header conversion circuit, the frame on the remote side Converted for transmission to disk unit, issued the converted frame from the master side disk unit to the remote side disk unit, write processing from the central processing unit to the master side disk unit and to the remote side disk unit Data characterized in that the writing process of Guarantee system.

The data guarantee system according to claim 1, wherein the header conversion circuit comprises a header conversion buffer for temporarily storing the frame of the writing process received from the central processing unit and a header conversion control unit for converting a header portion of the frame. The frame is converted for transmission to the remote-side disk device, and the converted frame is issued from the master-side disk device to the remote-side disk device, and writing from the central processing unit to the master-side disk device is performed. A data guarantee system characterized in that processing and write processing to the remote side disk unit are performed in parallel.

The data guarantee system according to claim 1 or 2, wherein the frame of the write processing issued from the central processing unit to the master side disk unit using a fiber channel protocol is processed in the master side disk unit, and the processing is performed. In parallel, the frame is converted for transmission on the remote side using the header conversion circuit, and the converted frame is transmitted from the master side disk to the remote side disk using the fiber channel protocol And a writing process from the central processing unit to the master side disk unit and a writing process to the remote side disk unit are performed in parallel.

In data assurance system according to any one of claims 1, 2, 3, with the central processing unit and said master-side inter-disk device and the remote disk unit bidirectional data transfer, it performs multiprocessing interface And the frame of the writing process issued from the central processing unit to the master side disk unit is processed in the master side disk unit, and the header conversion circuit is used in parallel to the processing. The frame is converted for transmission to the remote-side disk device, and the converted frame is issued from the master-side disk device to the remote-side disk device, and the writing process from the central processing unit to the master-side disk device Data guarantee system characterized by performing write processing to remote side disk unit in parallel .

In data assurance system according to any one of claims 1, 2, 3, 4, between one or more of the central processing unit and said master-side disk device, and the master disk device and one or more A director device is interposed between the remote side disk devices, and the director device and the master side disk device are connected by the same physical cable.

In data assurance system according to any one of claims 1, 2, 3, 4, data assurance system characterized by connecting a plurality of said central processing unit to said master side disk device.

In data assurance system according to any one of claims 1, 2, 3, 4, data assurance system, characterized by connecting the master disk device to a plurality of said remote disk device.

One or more central processing units and master side disk unit are connected by a fiber cable, the master side disk unit and one or more remote side disk units are connected by the fiber cable, and a header to the master side disk unit A data guarantee system having a conversion circuit,
The header conversion circuit includes a header conversion buffer for temporarily storing a frame of the writing process received from the central processing unit, and a header conversion control unit for converting a header portion of the frame.
The central processing unit, the master side disk unit, and the remote side disk unit are connected using an interface for bidirectional data transfer and multiplex processing,
A director device is interposed between one or more central processing units and the master side disk unit, and between the master side disk unit and one or more remote side disk units, and the director unit and the master side Connect the disk unit with the same physical cable,
The frame of the writing process issued from the central processing unit to the master side disk unit is processed in the master side disk unit using a fiber channel protocol, and the frame is converted into the header in parallel with the processing. A circuit is used for converting to the remote side disk unit transmission, and the converted frame is issued from the master side disk unit to the remote side disk unit, and a writing process from the central processing unit to the master side disk unit And write processing to the remote disk unit in parallel
Performing data transfer in parallel between the central processing unit and the master side disk unit, and between the master side disk unit and the remote side disk unit;
The reception from the central processing unit and the transmission to the remote disk unit are performed on the same port
A data guarantee system characterized by