JPH02273370A - Information processor - Google Patents

Information processor

Info

Publication number
JPH02273370A
JPH02273370A JP9593289A JP9593289A JPH02273370A JP H02273370 A JPH02273370 A JP H02273370A JP 9593289 A JP9593289 A JP 9593289A JP 9593289 A JP9593289 A JP 9593289A JP H02273370 A JPH02273370 A JP H02273370A
Authority
JP
Japan
Prior art keywords
disk
loaded
storage medium
time
priority
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
JP9593289A
Other languages
Japanese (ja)
Inventor
Masaaki Nii
誠明 仁井
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP9593289A priority Critical patent/JPH02273370A/en
Publication of JPH02273370A publication Critical patent/JPH02273370A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To always load a storing medium whose frequency in use is high and to reduce frequency in exchange by measuring time when the storing medium is loaded in a storing medium driving means after completing the write/ read-out of information. CONSTITUTION:A master control part 13 judges the input by a keyboard 12. At the time of requiring the reproduction of a disk C, whether the disk C is loaded in an auto-changer 7 is decided from the state of a priority holding memory 10. When the disk C is not loaded there, the disk which is being loaded now is restored to a housed position and the disk C is loaded to perform the reproduction. The loading time of the disk which is being loaded is reset at the time of completing recording/reproducing and at the time of exchanging. When the completion of recording/reproducing is decided by the master control part 13 and the data of a loading time measuring circuit 11 exceeds the maximum loading time of the disk C in the memory 10, the master control part compares the priorities of all the disks and selects the disk whose priority is maximum, then loads it to the changer 7 and the disk C is restored to the housed position. Thus, the frequency of exchange of the disks is reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、光ディスク等の記憶媒体複数を収納し、これ
ら複数の記憶媒体から所要記let媒体を選択して駆動
装置に装填するオートチェンジャ等を備え、選択した記
憶媒体へ情報を書き込み又は読み出ず情報処理装置に関
する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an autochanger or the like that stores a plurality of storage media such as optical disks, selects a desired let medium from the plurality of storage media, and loads it into a drive device. The present invention relates to an information processing apparatus that is equipped with a storage medium and that does not write or read information to or from a selected storage medium.

〔従来の技術〕[Conventional technology]

画像情報等を光ディスクに記録し、必要に応して光ディ
スクを検索して所要画像情報を装置外部へ出力する情報
ファイル装置が開発されている。
2. Description of the Related Art An information file device has been developed that records image information and the like on an optical disk, searches the optical disk as needed, and outputs required image information to the outside of the device.

このような情報ファイル装置では、画像情報が多量にな
ると複数の光ディスクに情報を記録しておく一方、複数
のディスクの中から所要ディスクを選択して光デイスク
駆動手段に装填するオートチェンジャを接続して情報の
検索を補助している。
In such an information file device, when the amount of image information becomes large, the information is recorded on multiple optical disks, and an autochanger is connected to select the required disk from among the multiple disks and load it into the optical disk drive means. It helps people search for information.

しかし、オートチェンジャを利用して情報を読み出す場
合、光ディスクの交換時間が必要となるため情報検索に
長時間を要し、検索効率の低下を招いていた。この検索
効率の低下を改善する方法として、光デイスク駆動手段
に近い方に使用頻度の高い光ディスクを収納する方法が
捉案されている(特開昭60−16001’17号)。
However, when reading information using an autochanger, it takes time to change optical discs, so it takes a long time to search for information, resulting in a decrease in search efficiency. As a method to improve this decrease in search efficiency, a method has been proposed to store frequently used optical disks closer to the optical disk drive means (Japanese Patent Laid-Open No. 16001'17/1983).

〔発明が解決しまうとする課題〕[Problems that the invention is supposed to solve]

ところが、光ディスクの収納位置を変更してもディスク
交換が頻繁である限り、本質的な検索効率の向上は望め
ない。
However, even if the storage position of the optical disc is changed, as long as discs are replaced frequently, no substantial improvement in search efficiency can be expected.

従って、使用頻度の高い光ディスクを常時ディスク駆動
手段に装填しておけば、ディスク交換に要する時間をか
なり削減できるが、特定のディスクを常時装填しておく
ような構成の装置は考案されていない。
Therefore, if frequently used optical disks are always loaded in the disk drive means, the time required for changing disks can be considerably reduced, but no device has been devised in which a specific disk is always loaded.

本発明はこのような問題点を解決するためになされたも
のであって、情報の書込み/続出し終了後、使用頻度の
低い記憶媒体が記憶媒体駆動手段に装填されたままにな
ることを回避するため、使用頻度の高い記憶媒体の優先
度を高く定めるとともに、情報の書込み/続出し終了後
、記憶媒体駆動手段に装填している記憶媒体の装填時間
を計測することにより、記憶媒体駆動手段に使用頻度の
高い記憶媒体を常時装填し、情報を書き込み/読み出す
際の記憶媒体の交換頻度を削減する情報処理装置の提供
を目的とする。
The present invention has been made in order to solve such problems, and it is possible to avoid the situation where a storage medium that is infrequently used remains loaded in the storage medium drive means after the writing/continuation of information writing is completed. In order to do this, the priority of the frequently used storage medium is set high, and the loading time of the storage medium loaded in the storage medium drive means is measured after the writing/successive output of information is completed. An object of the present invention is to provide an information processing device in which a frequently used storage medium is always loaded in the storage medium, and the frequency of replacing the storage medium when writing/reading information is reduced.

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

本発明の情報処理装置は、複数の記憶媒体から所要記憶
媒体を選択して記憶媒体駆動手段に装填し、情報を書込
み/読出す情報処理装置において、各記憶媒体が選択さ
れる優先度を記憶する優先度記憶手段と、記憶媒体への
情報の書込み/続出し終了後、該記憶媒体が記憶媒体駆
動手段に装填されている時間を計測する計測手段と、該
計測手段が計測した装填時間が所定時間を超えた場合、
前記優先度記i、9手段に記憶されている優先度が高い
記憶媒体を前記記憶媒体駆動手段に装填する手段とを備
えたことを特徴とする。
An information processing device of the present invention is an information processing device that selects a desired storage medium from a plurality of storage media, loads it into a storage medium drive means, and writes/reads information, and stores the priority with which each storage medium is selected. a priority storage means for storing information on the storage medium; a measuring means for measuring the time during which the storage medium is loaded into the storage medium driving means after the writing/successive output of information to the storage medium is completed; and a loading time measured by the measuring means. If the specified time is exceeded,
The apparatus is characterized by comprising means for loading a storage medium having a high priority stored in the priority record i, 9 means into the storage medium driving means.

〔作用〕[Effect]

本発明の情報処理装置は、情報の書込み/読出しが終了
した後、記憶媒体駆動手段に装填されている記憶媒体の
装填時間を計測し、装填時間が所定時間を超えると優先
度がより高い記憶媒体と交換する。また装填されている
記憶媒体の優先度が最高である場合はその記憶媒体を装
填したままにしておく。従って、記憶媒体駆動手段には
常時優先度の高い記憶媒体が装填され、情報の書込み/
読出しの際における記憶媒体の交換頻度を削減する。
The information processing device of the present invention measures the loading time of the storage medium loaded in the storage medium drive means after the writing/reading of information is completed, and if the loading time exceeds a predetermined time, the storage medium with a higher priority is Exchange with medium. Furthermore, if the loaded storage medium has the highest priority, that storage medium is left loaded. Therefore, the storage medium drive means is always loaded with a storage medium with a high priority, and information is written/written.
To reduce the frequency of replacing storage media during reading.

〔実施例〕〔Example〕

以下、本発明をその実施例を示す図面に基づき詳述する
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on drawings showing embodiments thereof.

第1図は本発明に係る情報処理装置の構成を示すブロッ
ク図である。図中1は画像情報を光学的に走査して読み
取るスキャナであって、スキャナ1が読み取った画像情
報は画像メモリ2が一旦記憶する。表示メモリ3は画像
メモリ2が記憶している画像情報を表示用のデータとし
て記憶する。
FIG. 1 is a block diagram showing the configuration of an information processing apparatus according to the present invention. In the figure, 1 is a scanner that optically scans and reads image information, and the image information read by the scanner 1 is temporarily stored in an image memory 2. The display memory 3 stores the image information stored in the image memory 2 as display data.

表示制御部4は表示メモリ3が記憶している表示用のデ
ータをCRT5に表示する。
The display control unit 4 displays the display data stored in the display memory 3 on the CRT 5.

磁気ディスク装置6は画像情報の記↑、eアドレスキー
ワード等、画像情報検索用のインデックス等を記憶する
。オートチェンジャ7は複数の光ディスク8a、8b、
8c、8d、8e及びこれを駆動する光デイスク駆動手
段を備える。記録・再生制御部9は所要光デイスク8番
こ対する情報の記録・再生を制御する。
The magnetic disk device 6 stores image information records, e-address keywords, indexes for searching image information, and the like. The autochanger 7 has a plurality of optical discs 8a, 8b,
8c, 8d, 8e and an optical disk drive means for driving them. The recording/reproduction control section 9 controls recording/reproduction of information on the required optical disk No. 8.

優先度保持メモリ10は使用頻度等により定まる光デイ
スク駆動手段への装填優先度、装填されているか否かの
装填状態、装填時間の最高限度及び計測された装填時間
をディスク別に配量、りする。装填時間計測回路11は
情報の記録・再生終了後において駆動手段に光ディスク
が装填されている時間をタイマ制込み等によって計測し
、計測データを優先度保持メモリ10に与える。
The priority holding memory 10 allocates the loading priority to the optical disk drive means determined by the frequency of use, the loading status (whether or not it is loaded), the maximum loading time, and the measured loading time for each disk. . The loading time measuring circuit 11 measures the time during which the optical disk is loaded into the drive means after the recording and reproduction of information is completed, using a timer or the like, and provides the measured data to the priority holding memory 10.

キーボード12からはオペレータの操作指令が与えられ
、主制御部13は各部のデータ授受を制御する。
Operator operation commands are given from the keyboard 12, and the main control section 13 controls data exchange between each section.

また第2図乃至第7図は、オートチェンジャ7における
光ディスク8の交換状態を示す模式図と優先度保持メモ
1月Oの記憶状態の概念図とを対応付けて示したもので
ある。オートチェンジャ7は2機の光デイスク駆動手段
?a、7bを備え、A、B。
Further, FIGS. 2 to 7 are schematic diagrams showing the exchange state of the optical disk 8 in the autochanger 7 and a conceptual diagram of the storage state of the priority retention memo 1 month O in association with each other. Is autochanger 7 a means of driving two optical disks? a, 7b, A, B.

C,D、Hの5枚の光ディスク8a、8b、8c、8d
、8eを収納している。優先度保持メモ1月Oは各光デ
ィスクの使用頻度等から定まる優先度、光デイスク駆動
手段に装填されているか否かを“1”0”で示した装填
状態、装填時間の最高限度及び情報の記録・再生終了後
に装填時間計測回路1.1が計測した装填時間をディス
ク別に記)、aしている。なお、優先度はその値が大き
いほど高優先度であり、優先度の設定方法としては、オ
ペレークがキーボード12から設定する方法、主制御部
13が使用頻度に基づき設定する方法等が考えられる。
Five optical disks 8a, 8b, 8c, 8d C, D, H
, 8e is stored. Priority maintenance memo January O contains the priority determined from the frequency of use of each optical disk, the loading status indicated by "1" or 0 to indicate whether it is loaded in the optical disk drive means, the maximum loading time, and information. The loading time measured by the loading time measuring circuit 1.1 after the recording/playback is completed is recorded for each disk (a).The larger the value is, the higher the priority is. Possible methods include a method in which the operator sets it from the keyboard 12, a method in which the main control unit 13 sets it based on the frequency of use, and the like.

以上のような構成の情報処理装置において情報を記録・
再生ずる際の光ディスクの交換手順を、第8図に示すフ
ローチャートに基づき説明する。
Information is recorded and recorded in an information processing device configured as described above.
The procedure for exchanging optical discs during playback will be explained based on the flowchart shown in FIG.

主制御部13はオペレータがキーボード12から入力す
る要求を判定しくSl)、オペレータがディスクCから
の情報再生を要求すると、ディスクCが光デイスク駆動
手段7a、7bに装填されているか否かを優先度メモリ
10の装填状態データから判定する(S2)。ディスク
Cが装填中の場合はディスクCから情報を再生する(S
5)。第2図に示す如くディスクCが装填中でない場合
は優先度保持メモリ10の優先度データを参照し、現在
光デイスク駆動手段7a、7bに装填されているディス
クD。
The main control unit 13 judges a request input by the operator from the keyboard 12 (Sl), and when the operator requests to reproduce information from the disk C, priority is given to whether or not the disk C is loaded in the optical disk drive means 7a, 7b. This is determined based on the loading state data in the memory 10 (S2). If disc C is being loaded, information is played back from disc C (S
5). As shown in FIG. 2, if the disk C is not being loaded, the priority data in the priority holding memory 10 is referred to and the disk D currently loaded in the optical disk drive means 7a, 7b is selected.

Eの内、優先度のより低いディスクDを収納位置に戻ず
(S3)。収納位置に戻された時点で光ディスクDの装
填時間計測は停止される。次に、光ディスクCを光デイ
スク駆動手段7aに装填しくS4)、第3図に示すよう
な状態にて情報を再生する(S5)。
Disk D, which has a lower priority among disks E, is not returned to the storage position (S3). When the optical disc D is returned to the storage position, measurement of the loading time of the optical disc D is stopped. Next, the optical disk C is loaded into the optical disk drive means 7a (S4), and information is reproduced in the state shown in FIG. 3 (S5).

情報を記録する場合の手順も上述の再生手順と同様であ
る。
The procedure for recording information is also similar to the reproduction procedure described above.

さらに、優先度の高いディスクを光デイスク駆動手段に
常時装填しておく手順につき説明する。
Furthermore, a procedure for always loading a high-priority disk into the optical disk drive means will be explained.

本実施例では同一ディスクを連続して使用する可能性を
考慮して、記録・再生終了後の所定時間をディスク交換
までの猶予時間として設ける。
In this embodiment, in consideration of the possibility that the same disk will be used continuously, a predetermined time after the end of recording/playback is provided as a grace period until the disk is replaced.

情報の記録・再生が終了すると、ディスクC及びディス
クCとの交換時に計測が停止されたディスクDの装填時
間データをリセットする(S6)。
When the recording and reproduction of information is completed, the loading time data of the disk C and the disk D whose measurement was stopped at the time of replacement with the disk C is reset (S6).

主制御部13が処理状況を判定しくSl)、記録・再生
終了と判定すると、装填時間計測回路11によって計測
される装填時間に基づき、優先度保持メモリIOのディ
スクCのみの装填時間データが再び0からカウントアン
プされる。この装填時間データと最高装填時間60秒と
を比較して(S7)、限度時間を超過するまでディスク
Cを光デイスク駆動手段7aに装填したままにしておく
。第4図に示すように、主制御部13はディスクCが装
填時間の最高限度を超過したことを検知すると、ディス
クCを含む全ディスク(光デイスク駆動手段7bに装填
されているディスクEは除く)の優先度を比較して(S
8)、+1先度が最大であるディスクを検出し、そのデ
ィスクが現在装填されているディスク以外であれば時間
超過したディスクCを収納位置に戻して(S9)、最大
優先度のディスクを光デイスク駆動手段7aに装填する
( S 10)。その後、収納位置に戻したディスクC
の装填時間データをリセットする(11)。
When the main control unit 13 determines the processing status (Sl) and determines that the recording/playback has ended, the loading time data of only the disk C in the priority holding memory IO is again set based on the loading time measured by the loading time measuring circuit 11. The count is amplified from 0. This loading time data is compared with the maximum loading time of 60 seconds (S7), and the disk C is kept loaded in the optical disk drive means 7a until the limit time is exceeded. As shown in FIG. 4, when the main controller 13 detects that the disk C has exceeded the maximum loading time, all disks including the disk C (excluding the disk E loaded in the optical disk drive means 7b) ) and compare the priorities of (S
8), detect the disk with the highest +1 priority, and if that disk is other than the currently loaded disk, return the disk C for which the time has elapsed to the storage position (S9), and light the disk with the highest priority. The disk drive means 7a is loaded (S10). After that, disk C was returned to the storage position.
(11).

第5図は、ディスクBが最高優先度を有しており、ディ
スクBをディスクCと交換して装填した場合の模式図で
ある。
FIG. 5 is a schematic diagram when disk B has the highest priority and is loaded in exchange for disk C.

また第6図及び第7図は、光デイスク駆動装置7bに装
填され′ζいるディスクE(最高優先度を有する)が装
填時間を超過した場合の処理状態を示す模式図である。
Further, FIGS. 6 and 7 are schematic diagrams showing the processing state when the loading time of the disk E (having the highest priority) loaded in the optical disk drive device 7b is exceeded.

即ち、主制御部13がディスクEを含む全ディスク(光
デイスク駆動装置7aに装填されているディスクCは除
く)の優先度を比較すると(S8)、現在装填されてい
るディスクEの優先度が最高であるので、他のディスク
との交換は行わず、優先度保持メモ「月Oにおけるディ
スクEのみの装填時間データをリセットする(Sll)
That is, when the main control unit 13 compares the priorities of all disks including the disk E (excluding the disk C loaded in the optical disk drive 7a) (S8), the priority of the currently loaded disk E is determined. Since it is the highest, I do not replace it with another disk, but write the priority maintenance memo "Reset the loading time data of only disk E in month O (Sll)"
.

なお、本実施例では装填限度時間を60秒としたが、各
ディスクの用途に応した時間設定が可能である。
Although the loading time limit was set to 60 seconds in this embodiment, it is possible to set the time depending on the use of each disk.

また、本実施例ではオートチェンジ中7が2機の光デイ
スク駆動手段7a、7bを有する構成としたが1機又は
3機以上であっても同様の効果が得られる。
Further, in this embodiment, the auto-change medium 7 is configured to have two optical disk drive means 7a and 7b, but the same effect can be obtained even if it has one or three or more optical disk drive means.

さらに、本実施例では読出し、書込み両用の情報処理装
置につき説明したが、読出しのみの単機能装置であって
も同様のすJ果が得られる。
Furthermore, although this embodiment has been described with respect to an information processing device that is capable of both reading and writing, similar results can be obtained even if it is a single-function device that is capable of reading only.

〔発明の効果〕〔Effect of the invention〕

本発明の情報処理装置は、光デイスク駆動装置に使用頻
度が高いディスクを常時装填し°ζおIJるので、ディ
スク交換に要する時間を大幅に削減でき、情報の検索効
率を向上させるという優れた’AJ果を奏する。
The information processing device of the present invention has the advantage of constantly loading frequently used disks into the optical disk drive, which greatly reduces the time required to replace disks and improves information retrieval efficiency. 'AJ performance.

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

第1図は本発明に係る情報処理装置の構成を示すブロッ
ク図、第2図乃至第7図はディスク交換の状態を示す模
式図及び優先度保持メモリの記憶状態を示す概念図、第
8図はディスクの交換手順を示すフローチャートである
。 7・・・オートチェンジャ 8・・・光ディスク10・
・・優先度保持メモリ 11・・・装填時間計測回路1
2・・・キーボード 13・・・主制御部特 許 出願
人  三洋電機株式会社 代理人 弁理士  河 野  登 夫 (a) 8e (a) 弔 ? 図 弔 図 (b) (b) 弔 図 耶 図 (b) (b) (a) 弔 図 弔 図 (b) (b)
FIG. 1 is a block diagram showing the configuration of an information processing apparatus according to the present invention, FIGS. 2 to 7 are schematic diagrams showing the state of disk exchange and a conceptual diagram showing the storage state of the priority holding memory, and FIG. is a flowchart showing a disc replacement procedure. 7... Autochanger 8... Optical disc 10.
・Priority holding memory 11 ・Loading time measurement circuit 1
2...Keyboard 13...Main control unit patent Applicant Sanyo Electric Co., Ltd. Agent Patent attorney Noboru Kono (a) 8e (a) Condolences? Funeral map (b) (b) Funeral map (b) (b) (a) Funeral map (b) (b)

Claims (1)

【特許請求の範囲】 1、複数の記憶媒体から所要記憶媒体を選択して記憶媒
体駆動手段に装填し、情報を書込み/読出す情報処理装
置において、 各記憶媒体が選択される優先度を記憶する優先度記憶手
段と、 記憶媒体への情報の書込み/読出し終了後、該記憶媒体
が記憶媒体駆動手段に装填されている時間を計測する計
測手段と、 該計測手段が計測した装填時間が所定時間を超えた場合
、前記優先度記憶手段に記憶されている優先度が高い記
憶媒体を前記記憶媒体駆動手段に装填する手段と を備えたことを特徴とする情報処理装置。
[Scope of Claims] 1. In an information processing apparatus that selects a desired storage medium from a plurality of storage media, loads it into a storage medium drive means, and writes/reads information, the priority at which each storage medium is selected is stored. a priority storage means for storing information on the storage medium; a measuring means for measuring the time during which the storage medium is loaded into the storage medium driving means after the writing/reading of information to the storage medium is completed; and a loading time measured by the measuring means. An information processing apparatus comprising: means for loading a storage medium with a high priority stored in the priority storage means into the storage medium drive means when the time exceeds the time limit.
JP9593289A 1989-04-14 1989-04-14 Information processor Pending JPH02273370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9593289A JPH02273370A (en) 1989-04-14 1989-04-14 Information processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9593289A JPH02273370A (en) 1989-04-14 1989-04-14 Information processor

Publications (1)

Publication Number Publication Date
JPH02273370A true JPH02273370A (en) 1990-11-07

Family

ID=14151048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9593289A Pending JPH02273370A (en) 1989-04-14 1989-04-14 Information processor

Country Status (1)

Country Link
JP (1) JPH02273370A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015935A1 (en) * 1991-03-07 1992-09-17 Fujitsu Limited Library device
JPH05204557A (en) * 1991-09-11 1993-08-13 Internatl Business Mach Corp <Ibm> Method and device for improving hit ratio of data storage device
JP2006215615A (en) * 2005-02-01 2006-08-17 Nec Corp Information recording and reproducing apparatus and method for controlling it
JP2007066313A (en) * 2005-08-31 2007-03-15 Internatl Business Mach Corp <Ibm> Method and apparatus for storing information
JP2007310919A (en) * 2006-05-16 2007-11-29 Fujitsu Ltd Method and system for reading data of hierarchical storage apparatus
JP2008217354A (en) * 2007-03-02 2008-09-18 Fujitsu Ltd Request scheduling method in hierarchical storage management system, request scheduling device and program

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015935A1 (en) * 1991-03-07 1992-09-17 Fujitsu Limited Library device
US5459848A (en) * 1991-03-07 1995-10-17 Fujitsu Limited Library apparatus with access frequency based addressing
JPH05204557A (en) * 1991-09-11 1993-08-13 Internatl Business Mach Corp <Ibm> Method and device for improving hit ratio of data storage device
JP2006215615A (en) * 2005-02-01 2006-08-17 Nec Corp Information recording and reproducing apparatus and method for controlling it
JP2007066313A (en) * 2005-08-31 2007-03-15 Internatl Business Mach Corp <Ibm> Method and apparatus for storing information
US8311663B2 (en) 2005-08-31 2012-11-13 International Business Machines Corporation Apparatus and method to store information
US8781620B2 (en) 2005-08-31 2014-07-15 International Business Machines Corporation Apparatus and method to store information
JP2007310919A (en) * 2006-05-16 2007-11-29 Fujitsu Ltd Method and system for reading data of hierarchical storage apparatus
JP2008217354A (en) * 2007-03-02 2008-09-18 Fujitsu Ltd Request scheduling method in hierarchical storage management system, request scheduling device and program
JP4490451B2 (en) * 2007-03-02 2010-06-23 富士通株式会社 Request scheduling method, request scheduling apparatus, and program in hierarchical storage management system

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