200530825 ' 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種箱體服務（Enclosure Service )， -尤指一種使用I2C介面之箱體服務主從端架構及具有該 •箱體服務從端功能之磁碟陣列控制器。 • 【先前技術】 電腦的發明改變了人們處理資料的方式，亦改變了 人們的工作模式。隨著資料處理量的日益增加以及資料 數位化的趨勢，如何建構一個穩定、大容量、高效能、 可存取性高的儲存系統已成為一重要課題。目前，在儲 存系統中常採用的技術之一為磁碟俥列（Redundant Array of Independent Disks，RAID )技術，而視需求的 鲁不同’在市場上主要有二種類型的解決方案··直接連接 儲存（Direct Attached Storage，DAS )、網路附加儲存 (Network Attached Storage，NAS)以及儲存區域網路 (Storage Area Network，SAN)等儲存方案。 在儲存系統中，通常會使用一個箱體（Encl〇sure) 來容置複數磁碟機、相關操作元件以及一箱體服務主端 (Enclosure Service Server，ESS)，其中箱體服務主端 (ESS )與一箱體服務從端（Enci〇sure service ciient， ESC)相對應。ESS通常與複數感測器相連接，俾供透 200530825 過-亥荨感測為來監控風扇、箱體内的溫度、電源供應哭 狀態等各種箱體内週邊狀態，以獲得複數參考數值，並 對該等參考數值進行初步處理，繼而再將該等參考數值 ，送至箱體服務從端（ESC)進行處理，以顯示出風扇 是否良好、箱體内溫度、電源供應器是否良好等各種輔 助訊息，俾供透過該等輔助訊息來確保整個箱體内的磁 =其控制ϋ可以在最佳的環境中運作，以提高系統的 穩定性。通常，ESC可位於箱體中或箱體之磁碟陣列控 制器之上，ESC設置之方式係㈣統設計來決定。 在介紹ESS如何與ESC之連接關係之前，下述將介奶 在儲存系統中常使用之SCSI ( Small c，uter ，SCSI為—種應用範圍廣泛的介面規格，其 具有下述優點：丨.較高的傳輸速率（例如 提升到320MB/S) ; 2李鲚眘、、盾处田玄 貝見已 ^ •糸、、先貝源佔用率低，係因中央處 ^器（CPU)通常只需將f料傳輸指令發送給㈣控製 晶片’而無需參與整個過程中的資料處理與計算，這種 :=1/0操作頻繁或經常使用到大容量播案交換的 項料好的功。.擴充性佳； 高階的儲存系統、硬碟以及伺服器 或工作站中。 第1圖顯示儲存系統中200530825 'IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a cabinet service (Enclosure Service), especially a master and slave architecture of a cabinet service using an I2C interface and the cabinet service slave Disk array controller with end functions. • [Prior technology] The invention of computers changed the way people process data and changed the way people work. With the increasing amount of data processing and the trend of data digitization, how to construct a stable, large-capacity, high-performance, and highly accessible storage system has become an important issue. At present, one of the technologies often used in storage systems is Redundant Array of Independent Disks (RAID) technology, and depending on the needs, there are two types of solutions in the market. Directly connected storage (Direct Attached Storage, DAS), Network Attached Storage (NAS), and Storage Area Network (SAN) storage solutions. In a storage system, an enclosure (EnclOsure) is usually used to house a plurality of disk drives, related operating elements, and an Enclosure Service Server (ESS). Among them, the Enclosure Service Server (ESS) ) Corresponds to an enclosure service slave (ESC). ESS is usually connected with a plurality of sensors, and the sensor is used to monitor the ambient conditions of various cabinets, such as the temperature of the fan, the temperature in the cabinet, the power supply crying status, etc. Perform preliminary processing on these reference values, and then send these reference values to the cabinet service slave (ESC) for processing to show whether the fan is good, the temperature in the cabinet, whether the power supply is good, etc. The information is provided to ensure that the magnetism in the entire cabinet = its control through these auxiliary messages can operate in the best environment to improve the stability of the system. Generally, the ESC can be located in the cabinet or on the disk array controller of the cabinet. The method of setting the ESC is determined by the system design. Before introducing the connection relationship between ESS and ESC, the following SCSI (Small c, uter, SCSI), which is commonly used in storage systems, is a widely used interface specification, which has the following advantages: 丨 .Higher Transmission rate (for example, increase to 320MB / S); 2 Li Zhishen, and Shield Department Tian Xuanbei see already ^ • 糸 ,, Xianbei source occupancy rate is low, because the central processor (CPU) usually only needs The transmission instruction is sent to the ㈣control chip 'without having to participate in the data processing and calculation in the whole process. This kind of: = 1/0 operation is frequently or frequently used for large-volume broadcast exchanges. Good scalability. High-end storage systems, hard drives, and servers or workstations. Figure 1 shows the storage systems
匯流排之示意目，|#^料h料接於SCSI 口其係包括箱體服務主端（ESS) n、 200530825 • 箱體服務從端（ESC) 12、SCSI匯流排13以及複數個SCSI 磁碟機 141，142, 143 °ESS11 透過 SCSI 匯流排 13 與 ESC12 相連接，其中ESS11如同其他SCSI裝置一樣，係佔用一 個SCSI識別號碼（ID)，且ESS11與SCSI匯流排13係透 、過SCSI連接線（例如：具有68接腳（Pins)之連接頭的 • 連接線）來相連接，亦即在ESS11必須設置一個SCSI連 接埠。然而ESS11在傳輸信息時僅會使用到SCSI連接頭 φ 中的八個接腳，而浪費了 SCSI連接線及連接埠之其他接 腳功用，並且由於使用SCSSI介面作為傳輸介面，對於 ESS11電路佈局方面亦會較為複雜，且使用SCSI介面， 其價格較為昂貴，而增加製造成本。 第2圖顯示儲存系統中箱體服務主從端連接於SCSI 匯流排之另一示意圖，其係包含ESS21、ESC22、SCSI 匯流排23以及複數個SCSI磁碟機241，242,243,244，其 翁中，ESS21與SCSI磁碟機241相連接，且ESS21與SCSI 磁碟機241係透過具有八個接腳之連接線連接。此種作 法的優點為：1.ESS21不佔用SCSI識別號碼（ID); 2.ESS21與SCSI磁碟機241之間所採用之連接線不是 SCSI連接線，故較為便宜。然而，此種作法的風險非常 大，係因ESS21透過SCSI磁碟機241來與ESC22進行溝 通，而磁碟機毀損率一向非常高，因此若SCSI磁碟機241 發生故障時，則將導致ESS21無法與ESC22進行溝通。 200530825 由以上之說明可知’若在箱體服務主端（ESS)直 =米用卿連接相及咖連接縣與箱體服務從端 SC)進仃連繫’騎使得成本較為高昂且電路佈局 ^為複雜；若將箱體服務主端（ESS)透過至少一個咖 =來與箱體服務從端（ESC)進行連繫，則將因箱體 ==(ESC)發生故障之機率而增加無法與箱體服 務攸端（ESC)溝通之風險。是故， 廉、電路佈局簡單且穩定度佳之箱體服務從相=低 已成為一亟需解決之課題。 【發明内容】 本發明之目的係在提供一種使用I2c介面之箱體服 ❿ 務主從端架構及具有該箱體服務從端功能之磁碟陣列 控制器，俾能降低生產成本。 本發明之目的係在提供—種使用I2c介面之箱體服 矛力主從端架構及具有該箱體服務從端功能之磁碟陣列 控制器，俾能簡化實做。 本發明之目的係在提供一種使用I2C介面之箱體服 務主從端架構及具有該箱體服務從端功能之磁碟陣列 ㈣器’俾能使得系統整體穩定度佳，不會以⑶裝置 毀損而導致箱體服務主端無法動作之情形。" 依據本發明之一特色， 體服務主從端架構，包括·· 所提供之使用I2C介面之箱 一箱體服務主端（Enclosure 200530825 ‘ Service Server，ESS);以及一箱體服務從端（Enclosure Service Client，ESC )，係具有一核心處理控制單元與 一傳輸資料轉換單元（Transmission Data Conversion Unit)，俾供核心處理控制單元透過傳輸資料轉換單元 •來與箱體服務主端（ESS)進行溝通，其中核心處理控 ’ 制單元係以SCSI傳輸協定來與傳輸資料轉換單元溝 通，傳輸資料轉換單元則用以將SCSI傳輸資料格式訊息 • 轉換為I2C傳輸資料格式訊息，俾供透過I2C傳輸協定來 與箱體服務主端進行溝通。 依據本發明之另一特色，所提供之磁碟陣列控制 器，係可用以配合一箱體服務裝置，該磁碟陣列控制器 包括：一核心處理控制單元；以及一傳輸資料轉換單 元，係用以轉換SCSI傳輸資料格式訊息與I2C傳輸資料 格式訊息，其中核心處理控制單元係以SCSI傳輸協定來 與傳輸資料轉換單元溝通，傳輸資料轉換單元則用以將 SCSI傳輸資料格式訊息轉換為I2C傳輸資料格式訊息， 俾供透過I2C傳輸協定來與箱體服務裝置進行溝通。 【實施方式】 有關本發明之說明，敬請參照第3圖顯示之系統架 構圖，其係由箱體服務主端（Enclosure Service Server， ESS) 31、箱體月艮務從端（Enclosure Service Client，ESC) 32、SCSI匯流排33以及複數SCSI磁碟機341，342, 343等 200530825 ' 主要構件所組成，其中箱體服務從端（ESC) 32具有核 心處理控制單元321、傳輸資料轉換單元（Transmission Data Conversion Unit) 322、I2C 連接埠 323 以及 SCSI 連 接埠324，箱體服務主端（ESS) 31具有I2C連接埠311。 於本發明中，箱體服務主端31係為與複數感測器相 連接（圖未示），以收集由該等感測器所提供之各種操 作環境參數，箱體服務主端31並提供該等操作環境參數 _ 至箱體服務從端32。箱體服務從端32則用以對該等操作 環境參數進行處理，以將該等操作環境參數顯示出來或 將該等操作環境參數作為其他相關應用程式之參考資 訊，以進行其他功能處理。於本實施例中，箱體服務從 端32可位於磁碟陣列（RAID)控制器上或儲存子系統 之箱體中的適當位置。上述之箱體服務從端32之I2C連 接璋323與箱體服務主端31之I2C連接琿311係透過一 0 I2C連接線35來相連接。箱體服務從端32與該等SCSI磁 碟機341，342，343則透過SCSI連接埠324與SCSI匯流排 33來相連接。 上述之箱體服務主端31為一箱體服務裝置，其所搭 配之該等感測器係分別位於箱體（圖未示）内之欲監控 部位各處，其中，該箱體可用來容置該等SCSI磁碟機341， 342，343、箱體服務主端31及箱體服務從端32，當然， 該箱體所容置之構件亦可視不同需求而加以增刪或加 以調整配置位置。上述之感測器所偵測之各種操作環境 200530825 參，可依系統設計而不同，該等環境參數可為：電源供 應器之狀態、風扇轉速及風扇是否運作正常、箱體内之 溫度、外部連接之不斷電供電系統（ups)之狀鲅、系 統之工作電壓狀態、系統之操作電流狀態、資料=援^ 電池狀態等各種環境參數。因此，當箱體服務主端珊 過該等感測器取得該等#作環境參數時，將對該等操作 境參數進行初步處理動作，以透過I2C協定、連接 #埠311，323及I2C傳輸線來將該等操作環境參數傳輸至 箱體服務從端32之傳輸資料轉換單元322。 上述之核心處理控制單元321除了用來處理箱體服 務從端32所需進行之程序外，其亦能提供其他箱體内的 硬體控制服務。於本實施例中，核心處理控制單元％ ^ 可由至少一韌體程式來實現。 傳輸資料轉換單元322為一個簡易的SCSu|體服務 釀（SCSI Enclosure Service，SES)模擬裝置，其佔有一 個SCSI識別號碼，並能夠處理數種簡易指令，例如··測 試裝置是否備妥（TestUnitReady)、查詢（1叫狀7)、 診斷資料傳送（SendData )及診斷資料接收 (ReceiveData)等。傳輸資料轉換單元322之主要功能 係用來轉換scsi所能傳輸之資料格式與I2C所能傳輸之 貧料格式，亦即傳輸資料轉換單元322透過ScSI傳輸介 面來與核心處理控制單元32丨溝通，且傳輸資料轉換單 70322並透過I2C傳輸介面來與箱體服務主端31溝通。 200530825The schematic diagram of the busbar, | # ^ 料 h material connected to the SCSI port includes the box service master (ESS) n, 200530825 • box service slave (ESC) 12, SCSI bus 13, and multiple SCSI magnetics Drives 141, 142, and 143 ° ESS11 is connected to ESC12 through SCSI bus 13, and ESS11, like other SCSI devices, occupies a SCSI identification number (ID), and ESS11 and SCSI bus 13 are connected through SCSI. Cable (for example: • cable with 68-pin (pins) connector) to connect, that is, a SCSI port must be set on the ESS11. However, the ESS11 only uses the eight pins in the SCSI connector φ when transmitting information, and wastes the functions of the SCSI cable and other pins of the port. Because the SCSSI interface is used as the transmission interface, the ESS11 circuit layout It will also be more complicated and use SCSI interface, which is more expensive and increases manufacturing costs. Figure 2 shows another schematic diagram of the box server master and slave connected to the SCSI bus in the storage system. It includes ESS21, ESC22, SCSI bus 23, and multiple SCSI drives 241,242,243,244. It is connected to the SCSI disk drive 241, and the ESS21 and the SCSI disk drive 241 are connected through a cable with eight pins. The advantages of this method are: 1. ESS21 does not occupy a SCSI identification number (ID); 2. The connection cable between ESS21 and SCSI drive 241 is not a SCSI connection cable, so it is cheaper. However, the risk of this approach is very large, because the ESS21 communicates with the ESC22 through the SCSI drive 241, and the damage rate of the drive has always been very high. Therefore, if the SCSI drive 241 fails, it will cause ESS21 Unable to communicate with ESC22. 200530825 From the above description, it can be seen that if the main service terminal (ESS) of the cabinet is directly connected to the connection terminal and the county is connected to the cabinet service from the terminal SC, the cost is relatively high and the circuit layout ^ It is complicated; if the ESS of the cabinet service is connected to the ESC of the cabinet through at least one coffee server, the probability of the failure of the cabinet == (ESC) will increase and it is impossible to communicate with Risks of the ESC communication. Therefore, low-cost, simple circuit layout, and good stability of the cabinet service from phase to low has become an urgent problem to be solved. [Summary of the Invention] The purpose of the present invention is to provide a cabinet service using an I2C interface, a master-slave architecture and a disk array controller with the service-slave function of the cabinet, which can reduce production costs. The purpose of the present invention is to provide a cabinet server master-slave architecture using an I2C interface and a disk array controller with the service-slave function of the cabinet, which can simplify the implementation. The object of the present invention is to provide a cabinet service master-slave architecture using an I2C interface and a disk array device having the function of the cabinet service slave, which can make the overall stability of the system good, and will not be damaged by the ⑶ device. As a result, the main server of the cabinet cannot operate. " According to a feature of the present invention, a master-slave architecture of a body service includes a box-case service master (Enclosure 200530825 'Service Server, ESS) provided using an I2C interface; and a cabinet service slave (Enclosure Service Client, ESC), which has a core processing control unit and a Transmission Data Conversion Unit. It is used by the core processing control unit to communicate with the box service master (ESS) through the transmission data conversion unit. For communication, the core processing control unit uses the SCSI transmission protocol to communicate with the transmission data conversion unit. The transmission data conversion unit is used to convert the SCSI transmission data format information into I2C transmission data format information for transmission through I2C. Agreement to communicate with the box service master. According to another feature of the present invention, the disk array controller provided can be used to cooperate with a cabinet service device. The disk array controller includes: a core processing control unit; and a data transmission conversion unit, which is used for The SCSI transmission data format message and the I2C transmission data format message are converted. The core processing control unit uses the SCSI transmission protocol to communicate with the transmission data conversion unit. The transmission data conversion unit is used to convert the SCSI transmission data format message to I2C transmission data. Format message, for communication with the box service device through the I2C transmission protocol. [Embodiment] For the description of the present invention, please refer to the system architecture diagram shown in FIG. 3, which is provided by the Enclosure Service Server (ESS) 31 and the Enclosure Service Client (Enclosure Service Client). , ESC) 32, SCSI bus 33, and multiple SCSI disk drives 341, 342, 343 and other 200530825 'main components, of which the box service slave (ESC) 32 has a core processing control unit 321, a transmission data conversion unit ( Transmission Data Conversion Unit) 322, I2C port 323, and SCSI port 324. The cabinet service master (ESS) 31 has I2C port 311. In the present invention, the box service master 31 is connected to a plurality of sensors (not shown) to collect various operating environment parameters provided by the sensors. The box serves the main terminal 31 and provides These operating environment parameters_ to the cabinet service slave 32. The cabinet service slave 32 is used to process these operating environment parameters to display these operating environment parameters or to use these operating environment parameters as reference information for other related applications for other functional processing. In this embodiment, the cabinet service slave 32 may be located on a RAID controller or a suitable location in the cabinet of the storage subsystem. The above-mentioned I2C connection of the cabinet service slave terminal 323 and the I2C connection of the cabinet service master terminal 31 are connected through a 0 I2C connection line 35. The cabinet service slave 32 is connected to the SCSI drives 341, 342, and 343 through the SCSI port 324 and the SCSI bus 33. The above-mentioned box service main end 31 is a box service device, and the sensors with which it is equipped are located at various places to be monitored in the box (not shown), wherein the box can be used for containing These SCSI disk drives 341, 342, 343, the box service master 31 and the box service slave 32 are installed. Of course, the components contained in the box can be added or deleted or adjusted according to different needs. Various operating environments 200530825 detected by the above sensors may vary according to the system design. These environmental parameters may be: the state of the power supply, the fan speed and whether the fan is operating normally, the temperature in the cabinet, the external Various environmental parameters such as the status of the connected uninterruptible power supply system (ups), the working voltage status of the system, the operating current status of the system, data = battery status, etc. Therefore, when the main server of the cabinet service passes these sensors to obtain the # as environmental parameters, it will perform preliminary processing operations on these operating environment parameters to connect #ports 311, 323, and I2C transmission lines through the I2C protocol. The operating environment parameters are transmitted to the transmission data conversion unit 322 of the cabinet service slave 32. In addition to the core processing control unit 321 described above, which is used to process the procedures required by the cabinet service slave 32, it can also provide hardware control services in other cabinets. In this embodiment, the core processing control unit% ^ may be implemented by at least one firmware program. The transmission data conversion unit 322 is a simple SCSu | SCSI Enclosure Service (SES) simulation device, which possesses a SCSI identification number, and can process several simple commands, such as whether the test device is ready (TestUnitReady) , Query (1 status 7), diagnostic data transmission (SendData) and diagnostic data reception (ReceiveData), etc. The main function of the transmission data conversion unit 322 is to convert the data format that can be transmitted by scsi and the poor material format that can be transmitted by I2C, that is, the transmission data conversion unit 322 communicates with the core processing control unit 32 through the ScSI transmission interface. And the data conversion sheet 70322 is transmitted and communicates with the cabinet service master 31 through the I2C transmission interface. 200530825
欠1此，傳輸貧料轉換單元322的工作便是將箱體服 ^ 所傳送之I2C資料傳輸格式的訊息轉換成SCSI 所月b傳輸之貝料傳輸格式的訊息，並能將核心、處理控制 單元32/所傳送之SCSI資料傳輸格式的訊息自動轉換成 I2C所犯傳輸之資料傳輸格式的訊息，以在箱體服務主 而3 1 ”核〜處理控制單元32丨之間達成雙向轉換傳輸資 料轉換之功此。於本實施例中，傳輸資料轉換單元边 •在㈣㈣資料傳輸格式的訊息成I2C資料傳輸格式的 ^ ^係直接由SCSI資料格式的訊息中擷取部份DC 傳輸時的必要訊息（例如：位址.、資料等），以成為W 資料傳輸格式的訊息；相類似地，傳輸資料轉換單元奶 在轉換I2C貧料傳輸格式的訊息成义⑶資料傳輸格式的 訊息時，係對I2C直接資料格式的訊息增添部份8€31傳 輸時的必要訊息（例如··高位元長度（Length-H)、低 _ 元長度（Length-L)、頁次編碼（？吨6_〇〇(^)等相關 訊息），以成為SCSI資料傳輸格式的訊息。 是故，當箱體服務主端31將該等操作環境參數傳送 至核心處理控制單元321時，係先將該等操作環境參數 透過I2C資料傳輸方式傳輸至傳輸資料轉換單元322，俾 供透過傳輸資料轉換單元322將該等I2C資料格式之操 作％境參數訊息轉換成SCSI所能傳輸之資料傳輸格式 的刼作環境參數訊息，繼而傳輸資料轉換單元322再將 該等SCSI資料傳輸格式之操作環境參數訊息傳送至核 13 200530825 心處理控制單元321進行處理，之後再透過-顯示單元 36來將箱體内之各種週邊及輔助之參考參數的狀態顯 厂、出來以了解系統之狀態，·或著透過核心處理控制單 兀321處理後，將料操作環境參數訊息料至各個需 要的應用程式或相關之處理，以確保整體系統之穩定。 上述之I2C協定係為菲利浦（Philips)公司所開發之技 術，其係為透過2條線來傳輸資料之技術，其中一條線 鲁為控制時脈’其中另一條線為傳輸寫入/讀取資料，由於 '、而用到2個接腳的連接埠，因此對於箱體服務主端 31與相體服務從端32而言’其電路係局將較為簡單，且 其成本也將較為低廉（相對MSCSI而言）。 另外，傳輸資料轉換單元322在實做上可以韌體 化疋故，本發明之箱體服務主端31與箱體服務從端32 之連接方式及其資料傳輸方式係與習知技術;F同，且不 ，會如同習知技術，係因SCSI裝置（例如：scsi硬碟）損 壞而影響到與箱體服務主端31之連繫。另外，當核心處 理控制單元32〗與傳輸資料轉換單元322以韌體方式實 現時，在核心處理控制單元321與傳輸資料轉換單元Μ] 之間亦不需要SCSI連接埠以及SCSI連接線，此一設計亦 將減少生產成本。 上述之核心處理控制單元321及傳輸資料轉換單元 322可以㈣或硬體實現，而當以孰體實作於一磁碟陣 列控制11上日彳’其功能可以利用磁碟陣列控制器上的中 14 200530825 • 央處理單元（圖未示）來執行。該中央處理單元主要是用 以提供磁碟陣列的硬體控制服務，如儲存資料之存取控 制等，但於本發明中，亦可用來處理箱體服務從端32所 需進行之程序，包括核心處理控制單元321及傳輸資料 轉換單元322兩者之相關程序。 在本發明中，磁碟陣列控制器係可廣義地具有各種 不同等級的磁碟陣列控制器（RAID Controller)或是JOB φ 控制器（JBOD Emulation Controller)之功能，其功能端視 所使用的硬體、韌體與軟體之變化以及其設定之不同而 異。在此所謂的各種不同等級的磁碟陣列技術，係廣義 地包括 N-RAID (Non-RAID，Disk Spanning，磁碟擴展）， RAID 0(Disk Stripping，磁碟分割），RAID 1 〜6等等，及 其延伸與組合。所謂的JBOD(Just_a_Bunch-Of_Disks)技 術，係指將一組磁碟機運用控制技術而以單一邏輯磁碟 鲁機的態樣呈現於主機端。 由以上之說明可知，本發明係將傳輸資料轉換單元 作為一簡易之SCSI箱體服務（SES)模擬裝置，並且利 用它來提供轉換層之功效，亦即透過傳輸資料轉換單元 來將核心處理控制單元傳輸之SCSI資料傳輸格式的訊 息轉換為I2C資料傳輸格式的訊息，並將箱體服務主端 傳輸之I2C資料傳輸格式的訊息轉換為SCSI資料傳輸格 式的訊息，俾能降低生產成本，且降低電路佈局之難 度’並提高箱體服務主從端之穩定度。 15 200530825 - 上述實施例僅係為了方便說明而舉例而已，本發明 所主張之權利範圍自應以申請專利範圍所述為準，而非 僅限於上述實施例。 【圖式簡單說明】 第1圖顯示習知儲存系統中箱體服務主從端連接於SCSI 匯流排之示意圖。 • 第2圖顯示習知儲存系統中箱體服務主從端連接於SCSI 匯流排之另一示意圖。 第3圖顯示本發明之系統架構圖。 【主要元件符號說明】 箱體服務主端 11，21，31箱體服務從端 12,22,32 SCSI 匯流排 13,23,33 鲁 SCSI磁碟機 141，142，143,241，242,243,244,341，342,343 核心處理控制單元321 傳輸資料轉換單元322 I2C連接埠 323,311 SCSI連接埠 324 I2C連接線 35 顯示單元 36 16Due to this, the job of the transmission lean conversion unit 322 is to convert the messages transmitted by the box server ^ into the I2C data transmission format into the messages transmitted in the shell material transmission format transmitted by SCSI month b, and can control the core and processing control. Unit 32 / The SCSI data transmission format message is automatically converted into a data transmission format message committed by I2C, in order to achieve bidirectional conversion of data transmission between the box service master and 3 1 ”core ~ processing control unit 32 丨The conversion is done. In this embodiment, the side of the data conversion unit transfers the information in the data transmission format into the I2C data transmission format. ^ ^ Is necessary to directly extract some DC transmission from the message in the SCSI data format. Information (such as address, data, etc.) to become a W data transmission format message; similarly, the transmission data conversion unit converts the I2C lean material transmission format message into the meaning of the data transmission format. Adds 8 € 31 necessary information to the I2C direct data format message (such as high-length (Length-H), low-length (Length-L), page numbering ( ? 6_〇〇 (^) and other related information) to become a SCSI data transmission format message. Therefore, when the cabinet service master 31 transmits these operating environment parameters to the core processing control unit 321, it is the first The operating environment parameters are transmitted to the transmission data conversion unit 322 through the I2C data transmission method, and are provided for converting the operation environment information of these I2C data formats into the data transmission format that SCSI can transmit through the transmission data conversion unit 322. Create environmental parameter information, and then transmit the data conversion unit 322, and then send the operating environment parameter information of these SCSI data transmission formats to the core 13 200530825 heart processing control unit 321 for processing, and then the-body through the display unit 36 The status of the various peripheral and auxiliary reference parameters are displayed to understand the state of the system, or after processing through the core processing control unit 321, the information of the operating environment parameter is sent to each required application or related processing. In order to ensure the stability of the overall system. The above I2C agreement is a technology developed by Philips. For the technology of transmitting data through 2 lines, one of the lines is for controlling the clock. 'The other line is for transmitting write / read data. Since', two ports are used. In terms of the main body service 31 and the main body service 32, the circuit system will be simpler and the cost will be relatively low (relative to MSCSI). In addition, the transmission data conversion unit 322 can be implemented in a flexible manner. For the sake of integration, the connection method and data transmission method of the box service master 31 and the box service slave 32 of the present invention are the same as the conventional technology; F is the same, and no, it is the same as the conventional technology, due to the SCSI Device (for example: scsi hard disk) is damaged and affects the connection with the main server 31 of the cabinet. In addition, when the core processing control unit 32 and the transmission data conversion unit 322 are implemented in firmware, a SCSI port and a SCSI connection cable are not required between the core processing control unit 321 and the transmission data conversion unit M]. Design will also reduce production costs. The above-mentioned core processing control unit 321 and transmission data conversion unit 322 can be implemented by hardware or hardware, and when implemented as a hardware on a disk array control 11, its functions can be implemented by using the middle of the disk array controller. 14 200530825 • Central processing unit (not shown) to execute. The central processing unit is mainly used to provide hardware control services of the disk array, such as access control of stored data, etc., but in the present invention, it can also be used to process the procedures required by the box service slave 32, including Relevant programs of the core processing control unit 321 and the transmission data conversion unit 322. In the present invention, the disk array controller can broadly have the functions of various types of disk array controllers (RAID Controllers) or JOB φ controllers (JBOD Emulation Controllers). The function of the disk array controller depends on the hardware used. Changes in body, firmware, and software and their settings vary. The so-called various levels of disk array technology broadly include N-RAID (Non-RAID, Disk Spanning, Disk Expansion), RAID 0 (Disk Stripping, Disk Division), RAID 1 ~ 6, etc. , And its extensions and combinations. The so-called JBOD (Just_a_Bunch-Of_Disks) technology refers to the use of control technology to present a set of disk drives on the host side as a single logical disk drive. As can be seen from the above description, the present invention regards the transmission data conversion unit as a simple SCSI box service (SES) simulation device, and uses it to provide the function of the conversion layer, that is, to control the core processing through the transmission data conversion unit The SCSI data transmission format messages transmitted by the unit are converted into I2C data transmission format messages, and the I2C data transmission format messages transmitted by the box service master are converted into SCSI data transmission format messages, which can reduce production costs and reduce Difficulty of circuit layout 'and improve the stability of the box service master and slave. 15 200530825-The above embodiments are just examples for the convenience of description. The scope of the claims of the present invention shall be based on the scope of the patent application, rather than being limited to the above embodiments. [Schematic description] Figure 1 shows the schematic diagram of the master and slave side of the box service connected to the SCSI bus in the conventional storage system. • Figure 2 shows another schematic diagram of the box server master and slave connected to the SCSI bus in the conventional storage system. Figure 3 shows a system architecture diagram of the present invention. [Description of main component symbols] Box service master 11, 21, 31 Box service slave 12, 22, 32 SCSI bus 13, 23, 33 SCSI drives 141, 142, 143, 241, 242, 243, 244, 341, 342, 343 Core processing Control unit 321 Data transfer unit 322 I2C port 323, 311 SCSI port 324 I2C cable 35 Display unit 36 16