JPS623455B2 - - Google Patents
Info
- Publication number
- JPS623455B2 JPS623455B2 JP57016225A JP1622582A JPS623455B2 JP S623455 B2 JPS623455 B2 JP S623455B2 JP 57016225 A JP57016225 A JP 57016225A JP 1622582 A JP1622582 A JP 1622582A JP S623455 B2 JPS623455 B2 JP S623455B2
- Authority
- JP
- Japan
- Prior art keywords
- control device
- storage
- buffer
- storage device
- data
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000013500 data storage Methods 0.000 claims 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】
この発明は、磁気回転体記憶装置とその制御装
置との間のデータ転送装置及び方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transfer device and method between a magnetic rotating body storage device and its control device.
磁気デイスク、磁気ドラム等の磁気回転体記憶
装置は、１個の制御装置を複数で共用することが
多い。回転位置（セクタ）検出機能により、読み
書きすべきレコードがヘツドの位置に到達した時
点で、記憶装置は制御装置と結合される。しか
し、制御装置が他の記憶装置と結合中でふさがつ
ている（ビジー）と、１回転以上待つて再結合を
試みねばならない。入出力要求頻度が高い場合、
この無駄回転は計算機システムの性能を低下させ
る。 In magnetic rotating body storage devices such as magnetic disks and magnetic drums, one control device is often shared by a plurality of devices. A rotational position (sector) detection function connects the storage device to the control unit when the record to be read or written reaches the position of the head. However, if the control unit is busy connecting with another storage device, it must wait more than one revolution before attempting to reconnect. If the frequency of I/O requests is high,
This wasteful rotation degrades the performance of the computer system.
この発明の目的は、上記のごとき無駄な回転を
削減して、制御装置と回転体記憶装置との間で新
規な方式によりデータ転送のバツフアリングを行
うデータ転送装置及び方法を提供することにあ
る。 An object of the present invention is to provide a data transfer device and method that performs buffering of data transfer between a control device and a rotating body storage device using a new method while reducing unnecessary rotations as described above.
この発明の特徴の１つは、複数の磁気回転体記
憶装置の夫々と、それらを共通に制御する１つの
制御装置との間にそう入され、前記制御装置から
のセクタを指定するセツト・セクタ命令を当該記
憶装置に伝達し、その記憶装置から目標セクタが
ヘツドに到達した旨の信号を受けて前記制御装置
へセツト・セクタ完了信号を発生する制御部と、
転送すべきレコードを一時的に蓄えるバツフアと
を有し、前記制御装置がふさがつている（ビジ
ー）時は、前記記憶装置から前記バツフアへの読
み込みを開始すると同時に、前記制御部はセツ
ト・セクタ完了信号を継続的に発生して前記制御
装置との結合を試みることにある。 One of the features of the present invention is that a set sector is inserted between each of a plurality of magnetic rotary storage devices and one control device that commonly controls them, and specifies a sector from the control device. a control unit that transmits the command to the storage device, receives a signal from the storage device indicating that the target sector has reached the head, and generates a set sector completion signal to the control device;
It has a buffer for temporarily storing records to be transferred, and when the control unit is busy, reading from the storage device to the buffer is started, and at the same time, the control unit completes the set sector. The purpose is to continuously generate a signal and attempt to connect with the control device.
以下図によつて、この発明の一実施例を説明す
る。図において、３０，３０′，３０″は磁気回転
体記憶装置、２０はその制御装置、１０はこの発
明になるデータ転送装置である。１１は転送装置
１０の制御部で、ゲート１２、セツト・セクタ完
了信号発生回路１３、セツト・セクタ命令発生回
路１４からなつている。１５は出入力制御部、１
６はバツフアである。 An embodiment of the present invention will be described below with reference to the drawings. In the figure, 30, 30', and 30'' are magnetic rotating body storage devices, 20 is a control device thereof, and 10 is a data transfer device according to the present invention.11 is a control section of the transfer device 10, a gate 12, a set It consists of a sector completion signal generation circuit 13 and a set sector command generation circuit 14. 15 is an input/output control section;
6 is Batsuhua.
まず、読み込みの場合には、記憶装置３０のヘ
ツドが目標セクタに到着したとき制御装置２０が
ビジーならば、転送装置１０内のバツフア１６に
目標のレコードを読み込み、制御装置２０がアイ
ドルになつた時点でこれを制御装置２０に転送す
る。また、書き出しの場合には、記憶装置３０の
ヘツドが目標セクタに到着したとき制御装置２０
がビジーならば、それがアイドルになつた時点で
制御装置２０を介してデータを転送装置１０内の
バツフア１６に読み込む。次に記憶装置３０のヘ
ツドが目標セクタに到着すると、これを書き出
す。 First, in the case of reading, if the control device 20 is busy when the head of the storage device 30 arrives at the target sector, the target record is read into the buffer 16 in the transfer device 10, and when the control device 20 becomes idle. This is then transferred to the control device 20. In addition, in the case of writing, when the head of the storage device 30 reaches the target sector, the control device 2
If it is busy, the data is read into the buffer 16 in the transfer device 10 via the control device 20 when it becomes idle. Next, when the head of the storage device 30 reaches the target sector, it writes it out.
以下、図によつて転送装置１０の動作を詳しく
説明する。 Hereinafter, the operation of the transfer device 10 will be explained in detail with reference to the drawings.
(1) 制御装置２０より、目標レコードの位置を検
知するためのセツト・セクタ命令を受けとり、
記憶装置３０に伝える。この後制御装置２０と
の結合は解除される。(1) Receives a set sector command for detecting the position of the target record from the control device 20,
The information is transmitted to the storage device 30. After this, the connection with the control device 20 is released.
(2) 記憶装置３０より目標セクタがヘツドに到着
したことを示すセツト・セクタ完了信号を受け
とり、制御装置２０との結合を試みる。結合可
能なら、制御部１１内のゲート１２を開き、従
来と同じ方法で読み込み／書き出しを実行し、
処理は完了する。(2) Receives a set sector completion signal from the storage device 30 indicating that the target sector has arrived at the head, and attempts to connect with the control device 20. If it is possible to combine, open the gate 12 in the control unit 11 and read/write in the same way as before,
Processing is complete.
制御装置２０がビジーで結合不能なら、ゲー
ト１２を閉じ、入出力制御部１５の制御のもと
に、バツフア１６に記憶装置３０から読み込み
を開始する。同時にセツト・セクタ完了信号発
生回路１３からセツト・セクタ完了信号を制御
装置２０に対して継続的に発生し、制御装置２
０との結合を試みつづける。ここで入出力制御
部１５は、制御装置２０の機能の一部を用いて
公知の方法で実現できる。また、セツト・セク
タ命令発生回路１４の実現方法も公知である。 If the control device 20 is busy and cannot be coupled, the gate 12 is closed and reading from the storage device 30 into the buffer 16 is started under the control of the input/output control section 15. At the same time, the set sector completion signal generation circuit 13 continuously generates a set sector completion signal to the control device 20.
Continue trying to combine with 0. Here, the input/output control section 15 can be realized using a part of the functions of the control device 20 using a known method. Furthermore, a method for implementing the set sector instruction generation circuit 14 is also known.
(3) 制御装置２０がアイドルになつた時点で、結
合可能となる。制御装置２０から送られる命令
を解読し、読み込み命令ならば入出力制御部１
５の制御のもとでバツフア１６内のレコードを
制御装置２０に転送し、処理は完了する。(3) When the control device 20 becomes idle, the connection becomes possible. The input/output control unit 1 decodes the command sent from the control device 20 and if it is a read command.
5, the records in the buffer 16 are transferred to the control device 20, and the process is completed.
書き出し命令なら、制御装置２０よりバツフ
ア１６にデータを読み込み、同時にセツト・セ
クタ命令発生回路１４からセツト・セクタ命令
を記憶装置３０に対し発行する。この後制御装
置２０との結合は解除される。セツト・セクタ
命令発生回路１４の実現方法は公知である。 If it is a write command, the control device 20 reads data into the buffer 16, and at the same time, the set sector command generation circuit 14 issues a set sector command to the storage device 30. After this, the connection with the control device 20 is released. The method of implementing the set sector instruction generation circuit 14 is well known.
(4) 一回転待つ以前に制御装置３０よりセツト・
セクタ完了信号が到着する。入出力制御部１５
の制御のもとでバツフア１６内のデータを目標
のレコードに書き出し、処理は完了する。(4) Before waiting for one revolution, set the
A sector complete signal arrives. Input/output control section 15
The data in the buffer 16 is written to the target record under the control of the buffer 16, and the processing is completed.
以上の説明によつて明らかなように、本発明に
よれば記憶装置にレコードを書いたり、記憶装置
から読んだりする時に、制御装置が他の記憶装置
と結合されており、ビジー状態であつても、その
後アイドルになつた時点で迅速に読み書きが行わ
れ、これにより計算機システムの性能向上に寄与
し得るという効果がある。 As is clear from the above description, according to the present invention, when a record is written to or read from a storage device, the control device is connected to another storage device and is in a busy state. After that, when the computer becomes idle, reading and writing are performed quickly, which has the effect of contributing to improving the performance of the computer system.
図はこの発明の一実施例になるデータ転送装置
を示し、図において、１０は転送装置、１１は制
御部、１２はゲート、１３はセツト・セクタ完了
信号発生回路、１４はセツト・セクタ命令発生回
路、１５は入出力制御部、１６はバツフア、２０
は制御装置、３０は回転体記憶装置である。
The figure shows a data transfer device according to an embodiment of the present invention. In the figure, 10 is a transfer device, 11 is a control section, 12 is a gate, 13 is a set sector completion signal generation circuit, and 14 is a set sector command generation circuit. circuit, 15 is an input/output control section, 16 is a buffer, 20
3 is a control device, and 30 is a rotating body storage device.
Claims (1)
該時系列のうちのある位置の情報を先頭として所
要のタイミングで読み書きするよう構成された記
憶装置複数からなり、該記憶装置に夫々に接続さ
れたデータ転送装置を介して共通の制御装置に接
続されたデータ記憶システムにおいて、該転送装
置は少くもそれに接続された記憶装置と上記制御
装置との間のデータの転送を制御し、バツフアリ
ングするためのゲート手段およびバツフア手段と
を含み、且つ 上記制御装置の指令により、上記記憶装置が上
記所定のタイミングに来たとき上記制御装置との
結合を試みる手段と、該結合が不能のとき上記バ
ツフアに上記記憶装置の内容を書き込む手段と、 上記制御装置が結合可能のとき該制御装置から
の指令により、上記バツフアへの読み書きを制御
する手段を有することを特徴とするデータ転送装
置。 ２ 複数語の情報を時系列的に読み書きし、且つ
該時系列のうちのある位置の情報を先頭として所
要のタイミングで読み書きするよう構成された複
数の記憶装置と、該記憶装置に夫々に接続された
データ転送装置を介して共通の制御装置に接続さ
れたデータ記憶システムにおいて、 該制御装置より上記所要のタイミングを検知す
るための指令を任意の１つの記憶装置に転送する
段階と、 該記憶装置の読み出し手段が、上記所要のタイ
ミングに来たことを検知し、該記憶装置と上記制
御装置との結合を試みる手段と、 上記制御装置がビジー状態のとき、上記記憶装
置から上記所要の情報を読み出し、これを上記記
憶装置に接続されたバツフアに一時格納する段階
と、 その後、上記記憶装置と制御装置との結合を再
度試み、制御装置のアイドル状態を検知する段階
と、 上記制御装置がアイドル状態になつた時点で上
記バツフアに格納された情報を上記制御装置に転
送する段階と、 を含むことを特徴とするデータ転送方法。 ３ 複数語の情報を時系列的に読み書きし、且つ
該時系列のうちのある位置の情報を先頭として所
要のタイミングで読み書きするよう構成された複
数の記憶装置と、該記憶装置に夫々に接続された
データ転送装置を介して共通の制御装置に接続さ
れたデータ記憶システムにおいて、 上記制御装置から、上記データ転送装置に接続
されたバツフアに情報を転送する段階と、 上記記憶装置の書き込み手段が所要の記憶位置
に到着したことを検知して上記バツフアに格納さ
れた情報を上記記憶装置に書き込む段階と、 を含むことを特徴とするデータ転送方法。 ４ 上記制御装置がビジー状態のとき、その結合
を継続的に試み、アイドル状態になつたことを検
徴する段階を有する第２項記載のデータ転送方
法。[Claims] 1. Consisting of a plurality of storage devices configured to read and write information of a plurality of words in chronological order, and to read and write information at a certain position in the time series at a required timing, In a data storage system connected to a common control device via data transfer devices respectively connected to the storage devices, the transfer device at least transfers data between the storage devices connected thereto and the control device. gate means and buffer means for controlling and buffering the storage device, and means for attempting to couple the storage device with the control device when the storage device arrives at the predetermined timing according to a command from the control device; data, characterized in that it has means for writing the contents of the storage device into the buffer when the controller is unable to connect, and means for controlling reading and writing to the buffer according to commands from the controller when the controller is connectable. Transfer device. 2. A plurality of storage devices configured to read and write information of multiple words in chronological order and read and write information at a certain position in the time series at the required timing, and each connected to the storage devices. in a data storage system connected to a common control device via a data transfer device, the control device transmits a command for detecting the required timing to any one storage device; means for detecting that the reading means of the device has arrived at the required timing and attempting to couple the storage device with the control device; and when the control device is in a busy state, reading the required information from the storage device; and temporarily storing it in a buffer connected to the storage device; thereafter, attempting to connect the storage device and the control device again and detecting an idle state of the control device; A data transfer method comprising the steps of: transferring information stored in the buffer to the control device when the buffer becomes idle. 3. A plurality of storage devices configured to read and write information of multiple words in chronological order, and to read and write information at a certain position in the time series at the required timing, and each connected to the storage device. In a data storage system connected to a common control device via a data transfer device, the data storage system includes a step of transferring information from the control device to a buffer connected to the data transfer device, and a writing means of the storage device. A data transfer method comprising the steps of: detecting that a desired storage location has been reached and writing the information stored in the buffer into the storage device. 4. The data transfer method according to claim 2, further comprising the step of continuously attempting the connection when the control device is in a busy state and detecting that the control device has become in an idle state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1622582A JPS57146359A (en) | 1982-02-05 | 1982-02-05 | Method and apparatus for data transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1622582A JPS57146359A (en) | 1982-02-05 | 1982-02-05 | Method and apparatus for data transfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57146359A JPS57146359A (en) | 1982-09-09 |
| JPS623455B2 true JPS623455B2 (en) | 1987-01-24 |
Family
ID=11910591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1622582A Granted JPS57146359A (en) | 1982-02-05 | 1982-02-05 | Method and apparatus for data transfer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57146359A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2780821B2 (en) * | 1989-09-22 | 1998-07-30 | 株式会社日立製作所 | Online dump method and disk subsystem |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49114847A (en) * | 1973-02-28 | 1974-11-01 |
-
1982
- 1982-02-05 JP JP1622582A patent/JPS57146359A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49114847A (en) * | 1973-02-28 | 1974-11-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57146359A (en) | 1982-09-09 |
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