JP4311637B2 - 記憶制御装置 - Google Patents
記憶制御装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0807—Network architectures or network communication protocols for network security for authentication of entities using tickets, e.g. Kerberos
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
- G06F21/80—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors
- G06F21/805—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors using a security table for the storage sub-system
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- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
- G06F3/0622—Securing storage systems in relation to access
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- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
- G06F3/0637—Permissions
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- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
- H04L63/101—Access control lists [ACL]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computing Systems (AREA)
- Software Systems (AREA)
- Storage Device Security (AREA)
Description
(1)静的設定
静的設定では、イニシエータにターゲットである記憶装置の識別子(IPアドレス、TCPポート番号、ターゲットネーム)を予め割り当てる。よって、イニシエータは、ディスカバリを必要とせずに記憶装置を認識できる。尚、デバイスの中で、主体的にコマンドを発行して他のデバイスを探すデバイスをイニシエータと言い、イニシエータの発行するコマンドに応答するデバイス、あるいはイニシエータが通信をする対象となるデバイスをターゲットと称する。
SendTargetsは、イニシエータが既にターゲットのIPアドレス及びTCPプロトコルで使用されるTCPポート番号を知っている場合に用いられる。
SendTargetsには、主に2つのリクエストタイプがある。一つは、ターゲットが制御する全デバイスの識別情報を要求するタイプ(以下、「全デバイスリクエスト」と称する)で、もう一つは、指定したデバイスの識別情報のみを要求するタイプ(以下、「デバイス指定リクエスト」と称する)である。以下、図6を用いて、SendTargetsによるディスカバリ処理の流れを説明する。
ターゲットは、ディスカバリ要求を受け取ると、そのリクエストタイプを読み出し判定する(ステップ610)。
リクエストタイプが全デバイスリクエストの場合、ターゲットは、ターゲット配下の全デバイスの識別情報をレスポンスのコマンドに含めてイニシエータへ送信する(ステップ615)。
レスポンスコマンドを受け取ったイニシエータは、その内容を解析してターゲット配下のデバイスの識別情報を取得し(ステップ625)、該識別情報を用いて、ターゲット配下のデバイスを新たなターゲットとしてログイン処理を開始する(ステップ630)。ログインが受理されると、I/O処理に入る(ステップ635)。
ゼロ設定は、管理サーバ(エージェントを伴う場合もある)を利用するディスカバリ方法である。
ゼロ設定には、主に2つのディスカバリ方法がある。
以上のようなディスカバリ方法を用途、規模に応じて使うことで、ストレージネットワークにおける効率的なデバイス管理が可能となる。
計算機システムは、イニシエータ105、記憶装置システム100、ネットワーク130、イニシエータ105及びネットワーク130並びに記憶装置システム100及びネットワーク130とを接続する通信線125、並びにネットワーク130と接続される管理端末195とを有する。
記憶装置システム100は、記憶制御装置135及び複数の記憶装置190を有する。また、記憶装置システム100、記憶制御装置135及び記憶装置190は、ターゲットとなるデバイスである。
イニシエータ105は、通信路125を介して、ネットワーク130に接続される。
メモリ185は、イニシエータ判別制御部(プログラム)165及び許可デバイステーブル170を格納する。尚、イニシエータ判別制御部165は以下プログラムであるとして説明するが、専用のハードウエアとして実現されていても良い。又、イニシエータ判別制御部165を主語とする処理は、実際はプログラムを実行するCPU180によって実行される。
尚、イニシエータ判別制御部165は、通信インターフェース140で取り出されたイニシエータ識別子を用いて、送信元のイニシエータ105を特定する。フレームの制御で扱う情報はメモリ185に格納される。
まず、イニシエータ105が記憶制御装置135に接続される記憶装置104を発見するために、記憶制御装置135にディスカバリ要求を発行する(ステップ205)。この要求には、要求を発行したイニシエータ105のイニシエータ識別子やリクエストタイプが含まれる。更に、デバイス指定リクエストの場合、アクセス対象の記憶装置104の識別子も含まれる。
上述の処理により、記憶制御装置135に許可されたイニシエータ105のみが、自己が使用できる記憶装置104の情報を受信することが出来、より高いセキュリティを確保することが出来る。
図4は、論理的な記憶装置の配置を示す図である。イニシエータ105には、2つの記憶装置190が図4のように、すなわち4つのLU(L0〜L3)に見える。実際には、記憶制御装置135が論理物理変換テーブルを有し、記憶制御装置135が記憶装置190とLUとの間のアドレス変換を行うことにより、イニシエータ105にLUを提供している。
尚、イニシエータ識別子である「A」という情報はこのコマンドと共に送られるとする。
ここで、識別子Aで判定できない場合、記憶制御装置135は、送信元のイニシエータインタフェース識別子で判定することもできる。この場合、記憶制御装置135は、許可デバイステーブル170のイニシエータインタフェース識別子に該当するLUNを検索し、そのLUNの情報をイニシエータ105に対するレスポンスのコマンドに埋め込む。
属性330は、LUに対して読み出し、書き込みの属性を与えるためのフィールドである。フィールドに登録される値で、”RW”は読み書きが可能なことを、”RO”は読み出しのみ可能で書き込みは不可であることを示す。また、その他の属性を設定しても良い。
Claims (3)
- 複数の計算機と、複数の記憶装置に接続された記憶制御装置であって、
IP−SANを介して前記複数の計算機と接続され、前記複数の計算機からのリード及び/又はライト要求を受信する通信インターフェースと、
前記複数の記憶装置に接続された記憶装置インターフェースと、
前記通信インターフェース及び前記複数の記憶装置インターフェースに接続され、前記記憶装置によりターゲットデバイスを構成すると共に、前記ターゲットデバイス内に複数の論理ユニットを構成する処理ユニットと、
前記処理ユニットに接続され、前記計算機に割り当てられた第1の識別子と、当該計算機に対してアクセスが許可された前記ターゲットデバイスと、当該ターゲットデバイス内に設けられ、当該計算機に対してアクセスが許可された1以上の論理ユニットとを対応付ける関連情報が格納されたメモリと
を備え、
前記関連情報には、アクセスが許可されていない前記計算機に割り当てる第2の識別子と、実在しない前記ターゲットの識別情報とが対応付けて格納され、
iSCSIプロトコルのディスカバリ処理の処理時、前記処理ユニットは、アクセス可能なターゲットデバイスを見つけるために前記計算機から送信されるディスカバリ要求を前記通信インターフェースにおいて受信すると、当該ディスカバリ要求に含まれる前記計算機に付与された第1の識別子と、メモリに格納された関連情報とに基づいて、当該計算機のアクセスが許可されたターゲットデバイスに付与された識別情報を当該計算機に送信する一方、アクセスが許可されていない前記計算機から送信される前記ディスカバリ要求を前記通信インターフェースにおいて受信すると、当該ディスカバリ要求に含まれる前記計算機に付与された識別子と、前記メモリに格納された前記関連情報とに基づいて、前記実在しないターゲットデバイスの識別情報を当該計算機に送信し、
ディスカバリ処理の処理後、前記処理ユニットは、前記計算機から当該ターゲットデバイス内の当該計算機がアクセスすることを許可された前記論理ユニットに関する情報の送信要求を受信すると、当該送信要求に含まれる第1の識別子と、前記メモリに格納された前記関連情報とに基づいて、前記計算機がアクセスすることを許可された1以上の前記論理ユニットに関する情報を当該計算機に送信する一方、前記計算機から前記実在しないターゲットデバイス内の前記論理ユニットに関する情報の送信要求を受信したときには、反応しない
ことを特徴とする記憶制御装置。 - 前記関連情報は、さらに前記計算機に割り当てられた第1の識別子と、当該計算機のアクセスが許可された前記通信インターフェースとを対応付ける情報を含む
ことを特徴とする請求項1に記載の記憶制御装置。 - 前記関連情報は、さらに前記計算機に対してアクセスが許可された前記論理デバイスの属性を含む
ことを特徴とする請求項1に記載の記憶制御装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003369810A JP4311637B2 (ja) | 2003-10-30 | 2003-10-30 | 記憶制御装置 |
US10/754,857 US7454795B2 (en) | 2003-10-30 | 2004-01-09 | Disk control unit |
DE602004023168T DE602004023168D1 (de) | 2003-10-30 | 2004-10-14 | Plattenspeichersteuerwerk |
EP04024514A EP1528746B1 (en) | 2003-10-30 | 2004-10-14 | Disk control unit |
US11/234,196 US8006310B2 (en) | 2003-10-30 | 2005-09-26 | Disk control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003369810A JP4311637B2 (ja) | 2003-10-30 | 2003-10-30 | 記憶制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005135124A JP2005135124A (ja) | 2005-05-26 |
JP4311637B2 true JP4311637B2 (ja) | 2009-08-12 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003369810A Expired - Fee Related JP4311637B2 (ja) | 2003-10-30 | 2003-10-30 | 記憶制御装置 |
Country Status (4)
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US (2) | US7454795B2 (ja) |
EP (1) | EP1528746B1 (ja) |
JP (1) | JP4311637B2 (ja) |
DE (1) | DE602004023168D1 (ja) |
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