TWI263137B - Enclosure service client-server system using I2C interface, RAID controller having the functionality of the enclosure service client, and related data transmission method - Google Patents

Abstract

Enclosure service client-server system using I2C interface, RAID controller having the functionality of the enclosure service client, and related data transmission method are disclosed, which utilize I2C protocol as a communication between ESS (enclosure service server) and ESC (enclosure service client). ESC includes a core process control unit and a transmission data conversion unit, wherein the transmission data conversion unit provides a conversion layer functionality to convert the SCSI information sent from the core process control unit to the I2C information and convert the I2C information sent from ESS to the SCSI information.

Description

1263137

IX. Description of the Invention: [Technical Field] The present invention relates to an Enclosure Service, and more particularly to a box service master-slave architecture using an I2C interface and a magnetic function having a slave service function Disc array controller. φ [Prior Art] The invention of computers has changed the way people process data and has changed the way people work. With the increasing amount of data processing and the trend of digital data, 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 commonly used in storage systems is Redundant Array of Independent Disks (RAID) technology. There are three main types of solutions on the market depending on the requirements. · Direct connection storage (Direct Storage solutions such as Attached Storage (DAS), Network Attached Storage (NAS), and Storage Area Network (SAN). In the storage system, an enclosure is usually used to accommodate multiple drives, related operating components, and a service provider (Enclosure Service Server 5 ESS), where the main service (ESS) and A box corresponds to the Enclosure Service Client (ESC). The ESS is usually connected to a multi-sensor, which is used to monitor the temperature of the fan, the temperature inside the cabinet, the power supply, the status of the cabinet, etc., to obtain a plurality of reference values: The reference values are initially processed, and then the values are sent to the cabinet service slave (ESC) for processing to show whether the fan is good, the temperature inside the cabinet, the power supply is good, and the like. The message 'to provide the entire disc and its controller through the (4) (four) information can operate in the best environment, (d) stability. Usually the 'ESC can be located in the cabinet or on the disk array controller of the cabinet. The way the ESC is set is determined by the system design. Before introducing the relationship between ESS and ESC, the following will refer to the SCSI (Small Com-Additional Interface) that is commonly used in storage systems. SCSI is a widely used interface specification with the following advantages: High transmission rate (for example: peak bandwidth / raised (four) 32GMB / S); 2. System resources (four) rate is low, because the central point ° ° (CPU) usually only need to send data transmission instructions to the SCSI control chip, and There is no need to participate in the data processing and calculation in the whole process. This is a very good function for the storage system that frequently or frequently uses large-capacity broadcast exchanges. The expansion is good; 4. The debugging is high; 5. The degree of optimization is high when performing multiplex processing. Therefore, the =CSI target is mainly used in high-end storage systems, hard drives, and feeders or workstations. Figure 1 shows the schematic diagram of the main and secondary connections of the cabinet service to the SCSI bus in the storage system. The system includes the main service (ESS) of the cabinet, and the repair of the main service (ESS) 11 and 1263137.

The box service slave (ESC) 12, the SCSI bus 13 and a plurality of SCSI drives 141, 142, 143. The ESS11 is connected to the ESC12 through the SCSI bus 13. The ESS11 occupies a SCSI identification number (ID) like other SCSI devices, and the ESS11 and SCSI bus 13 are connected through the SCSI cable (for example: with 68 pins (Pins) ) The connector of the connector is connected, that is, a SCSI port must be set in the ESS11. However, ESS11 only uses the eight pins in the SCSI connector when transmitting information, which wastes the SCSI cable and other pin functions of the port, and because the SCSSI interface is used as the transmission interface, the layout of the ESS11 circuit is also It will be more complicated and use the SCSI interface, which is more expensive and increases manufacturing costs.

Figure 2 shows another schematic diagram of the main service slave of the storage system connected to the SCSI bus, which includes ESS21, ESC22, SCSI bus 23 and a plurality of SCSI drives 241, 242, 243, 244, of which ESS21 and SCSI The disk drive 241 is connected, and the ESS 21 and the SCSI disk drive 241 are connected through a connection line having eight pins. The advantages of this method are: 1. ESS21 does not occupy the SCSI identification number (ID); 2. The connection line used between the ESS21 and the SCSI disk drive 241 is not a SCSI connection line, so it is relatively inexpensive. However, the risk of this method is very large. Because ESS21 communicates with ESC22 through SCSI disk drive 241, the disk drive damage rate has always been very high, so if SCSI disk drive 241 fails, it will lead to ESS21. Unable to communicate with ESC22. 1263137 It can be seen from the above description that if the SCSI connection phase and the SCSI connection line are directly connected to the cabinet service slave (ESC) at the main service end (ess), the cost will be relatively high and the circuit layout will be relatively high. Complex; if the cabinet service master (ESS) is connected to the cabinet service slave (ESC) through at least one SCSI device, it will increase due to the probability of failure of the cabinet service end (ESC). Risk of communication at the Gateway Service (ESC). Therefore, how to provide a sub-container architecture with low cost, simple circuit layout and good stability has become a problem to be solved. SUMMARY OF THE INVENTION An object of the present invention is to provide a cabinet service master-slave system using an I2C interface and a disk array controller having the box service slave function, which can reduce the production cost. SUMMARY OF THE INVENTION The object of the present invention is to provide a box-side service master-slave system using an I2C interface and a disk array controller having the box-side slave function, which can simplify the implementation. The object of the present invention is to provide a box service master-slave system using an I2C interface and a disk array controller having the box service slave function, which can make the overall stability of the system good, and there is no (four) device damage. The situation that the main service of the box service cannot be operated. The box-serving master-slave system using the sink interface provided by the feature of the present invention includes: a box service master (-a: .3/27 1263137)

Service Server ' ESS); and a service provider (ESC) with a core processing control unit and a Transmission Data Conversion Unit for core processing control The unit communicates with the main body of the cabinet (ESS) through the transmission data conversion unit, wherein the core processing control unit communicates with the transmission data conversion unit by using the SCSI transmission protocol, and the transmission data conversion unit transmits the data format information for WSCSI. # Convert to I2c transmission poor format message, for communication with the host service host through the I2C transport protocol. According to another feature of the present invention, a disk array controller is provided for use with a box service device, the disk array controller comprising a core-processing control unit, and a transmission data conversion unit. The SCSI transmission data format message and the I2C transmission data format message are converted, wherein the core processing control unit is an ascsI transmission protocol to communicate with the transmission data conversion unit, and the transmission data conversion unit is used to convert the SCSI transmission data format information into the I2C transmission data. The format message is used to communicate with the box service device through the I2C transport protocol.

According to another feature of the present invention, an I2C interface is provided: a body service master-slave system, including a box service master; and a box service slave, having a "core processing control unit and" Transmitting data transfer, the single 70 '俾 for the core, the processing control unit through (4) transmission data conversion list 7G to communicate with the 4 box service main terminal, wherein the core processing control unit is different from the second I2C transmission agreement The transmission protocol 1263137 communicates with a read data conversion unit, and the transmission data conversion unit converts the second transmission data format message into an i2c transmission data message to communicate with the service line through the I2C transmission protocol. . According to another feature of the present disclosure, the provided box service is a poor-and-small transmission method of the master-slave system, wherein the system includes a box service host x and an I-object service slave, and the method includes the following steps : providing - nuclear spring " Λ * control unit and transmission data conversion unit in the second end of the box service 'for the core processing (four) unit through the transmission data conversion unit to communicate with the main service host; The box service main end provides the environment parameter of the box to the 2 transmission data conversion unit in the first transmission protocol transmission data format; and the transmission data conversion unit uses the 哀 phase parameter of the 垓 phase body as the second transmission agreement The transport data format is provided to the core processing control unit for processing the operating environment parameters from the end of the box service. [Embodiment] For the description of the present invention, please refer to the system architecture diagram shown in FIG. 3, which is performed by the Enclosure Service (ESS) 3 Enclosure Service client (Enclosure Service client, Esc) 32, SCSI bus bar 33 and a plurality of SCSI disk drives 341, 342, 343 and other main components, wherein the box service slave (ESC) 32 has a core processing control unit 321, a transmission data conversion unit (Transmissi〇n 1263137

Data Conversion Unit 322, I2C port 323 and SCSI port, port 324' box service master (ESS) 31 have I2C port 311. 1 In the present invention, the box service main end 31 is connected to a plurality of sensors (not shown) to collect various operating environment parameters provided by the sensors, and the box service main end 31 is These operating environment parameters are provided to the box service slave 32. The box service slave end 32 is used to process the operating environment mics to display the operating environment parameters or to use the operating environment parameters as reference information for other related applications for other functional processing. . In this embodiment, the box service slave 32 can be located in a suitable location on the disk array (Raid) controller or in the housing of the storage subsystem. The above-mentioned box service is connected from the end 322I2C connecting port 323 to the I2C port of the box service main terminal 3 through an I2C connecting line 35. The box service is connected from the terminal 32 to the 8 (: 81 drives 341, 342, 343 through the SCSI port 324 and the SCSI bus _ 33. The above-mentioned box service main terminal 31 is a box service. The sensors, which are respectively disposed in the housing (not shown), are located in the housing to be monitored, wherein the housing can be used to accommodate the SCSI drives 341, 342, 343, The main service port 31 of the box and the service end of the box are provided. Of course, the components housed in the box can also be added, deleted or placed according to different requirements. The various operating environment parameters of the above-mentioned device can be According to the design of the system, the environmental parameters can be: the state of the power supply, the fan speed and the normal operation of the fan, the temperature of the 1263137 in the cabinet, the state of the externally connected uninterruptible power supply system (ups), Various environmental parameters such as the operating voltage state, the operating current state of the system, and the battery state of the data backup. Therefore, when the main body of the cabinet service obtains the operating environment parameters through the sensors, it will Operational % 芩 进行 preliminary The action is to transmit the operating environment parameters to the transport data conversion unit 322 of the box service slave 32 through the I2C protocol, the i2c port 311, 323 and the I2C transmission line. # The core processing control unit 321 is used in addition to In addition to the procedures required for processing the cabinet service from the terminal 32, it can also provide hardware control services in other cabinets. In this embodiment, the core processing control unit 321 can be implemented by at least one firmware program. The conversion unit 322 is a simple SCS] SCSI Enclosure Service (SES) emulation device that occupies a SCSI identification number and can handle several simple instructions, such as: test equipment ready (TestunitReady), query (Inquery), diagnostic data transmission (SendData) and diagnostic data receiving (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 data format that can be transmitted by I2C, that is, transmission. The data conversion unit 322 communicates with the core processing control unit 321 through the SCSI transmission interface, and transmits the data conversion unit 322 through The I2C transmission interface communicates with the box service host 31. Therefore, the operation of the transmission data conversion unit 322 is to convert the information of the I2C data transmission format transmitted by the box service main terminal 31 into the transmission of sesi 13 1263137. The message of the shell material transmission format, and can automatically convert the message of the SCSI data transmission format transmitted by the core processing control unit into the data transmission format message of the transmission, in order to be in the box service main end 31 and the core processing control The unit 321 achieves the bidirectional conversion transmission data conversion. In this embodiment, the data transfer unit is transferred, and the message in the scsi* material transfer format is the i2c data transfer format. The part I] is directly extracted from the message in the SCSI data format. ^ The necessary information (such as address, data, etc.) at the time of transmission to become the message of the I2C poor material transmission format; similarly, the transmission data conversion unit milk converts the information in the I2Cf material transmission format into the brain data transmission format. The message is added to the I2C direct data format to add some necessary information (such as: high bit length (Length_H), low bit length (Length_L), page-code (Page-Code) and other related information) to become SCSI The message in the data transfer format. Therefore, when the box service main terminal 31 transmits the operating environment parameters to the core service unit 321 , the operating environment parameters are first transmitted to the transmission data conversion unit π] through the I2C lean material transmission mode. The operating environment parameter information of the I2C data format is converted into the operating channel information of the SC_transmittable data transmission format by the transmission data conversion unit 322, and then the data conversion unit is transmitted and then the SCSI data transmission format is transmitted. The operating environment parameter message is transmitted to the core-processing control unit 321 for processing, and then through a display unit 36 to display the status of various peripheral and auxiliary reference parameters in the box 14 1263137 i: taste Wl'·5.丨 正 正 换 换 换 以 以 以 以 以 y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y The above-mentioned I2C protocol is a technology developed by phiHps, which is a technology for transmitting data through two lines, one of which is controlled. The clock is 'the other line is the transmission write/read data. Since the sink only needs to use the connection port of 2 pins, for the box service main terminal 31 and the box service slave end 32, The circuit layout will be relatively simple, and its cost will be relatively low (relative to SCSI). In addition, the transmission data conversion unit 322 can be hardened in practice, and the box service main terminal 31 of the present invention. The connection mode with the box service from the end % and its material transmission method are different from the conventional technology, and are not affected by the SCSI device (for example, coffee hard disk) and the cabinet service. In addition, when the core processing control unit 321 and the transmission resource (4) switch between the core processing control unit 321 and the transmission data conversion unit, there is no need for a SCSI connection, which will reduce the production cost. 'This design is also 322, the core processing control unit 321 and the transfer data conversion unit are connected to the body or the body to achieve 'and when the blade body is implemented in a disk array No, use the middle of the disk array controller And the central processing unit is mainly a hardware control service using a k-disk array, such as a storage data access control 1263137 system, etc., but in the present invention, it can also be used to process the box service from the end 32 The program is executed, including the core processing control unit 321 and the transmission data conversion unit 322. In the present invention, the disk array controller can broadly have various levels of disk array controllers (RAID Controllers). Or the function of the JOB controller (JBOD Emulation Controller), the function of which depends on the hardware, firmware and software used and its settings. The so-called various levels of disk array technology, It broadly includes N-RAID (Non-RAID, Disk Spanning), RAID 0 (Disk Stripping), RAID 1 to 6, and so on, and their extensions and combinations. The so-called JBOD (Just-a-Bunch-Of-Disks) technology refers to a set of disk drives using control technology and presented on the host side in the form of a single logical disk drive. As can be seen from the above description, the present invention uses 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, the core processing control through the transmission data conversion unit. The message transmitted by the SCSI data transmission format of the unit is converted into the information of the I2C data transmission format, and the information of the I2C data transmission format transmitted by the main service of the box service is converted into the information of the SCSI data transmission format, thereby reducing the production cost and reducing The difficulty of circuit layout, and improve the stability of the main and secondary terminals of the cabinet service. 16 1263137

The above-described embodiments are merely examples for the convenience of the description, and the scope of the claims is intended to be based on the scope of the claims, and not limited to the above embodiments. [Simple Description of the Drawings] Figure 1 shows a schematic diagram of the connection between the master and slave of the cabinet service in the conventional storage system to the SCSI bus. # 图图图。 Another schematic diagram showing the connection between the master and slave of the cabinet service in the conventional storage system to the SCSI bus. Figure 3 shows a system architecture diagram of the present invention. [Main component symbol description] Mainframe service terminal 11, 21, 31 Cabinet service slave terminal 12, 22, 32 SCSI busbar 13, 23, 33 SCSI disk drive 141, 142, 143, 241, 242, 243, 244, 341, 342, 343 core processing control Unit 321 transmission data conversion unit 322 I2C connection 埠 323 Π Π SCSI connection 324 I2C connection line 35 Display unit 36 17

Claims (1)

1263137 X. Patent application scope: 1. A master-slave system using the I2C interface, including: · Enclosure Service Server (ESS); and a box service slave (Enclosure Service Client) , ESC), having a core processing control unit and a Transmissi〇n Data Conversion Unit for the core processing control unit to communicate with the box service master (ESS) through the transmission data conversion unit Communicate, the core processing control unit το fine SCSI transmission coordination wire no transmission data conversion unit communication, the transmission poor material conversion unit is used to convert SCSI transmission data format information into HC transmission poor material format information, for Communicate with the main body of the cabinet through the transmission protocol. 2. For example, Zhongming specializes in the box service master-slave system described in item 1, wherein the box service slave has an i2c connection with the box service master, respectively. Connect to these I2C ports for information transfer. 3. If you apply for the paste 丨 敎 敎 敎 服务 服务 服务 , , 巧 巧 巧 巧 巧 巧 巧 巧 巧 巧 巧 巧 巧 体 体 体 体 体 体 体 体 体 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四«Service master-slave (10), where at least one SCSI is placed as a SCSI disk drive. 5. If you apply for the box service main Wei Town as described in item 1 of the manuscript, the transmission metric conversion conversion domain is an analog SCSI device, which is occupied by an sc code (ID) 〇 6. If you apply for a special fiber The box service mentioned in the first item is the master and slave money. When the box is 瞒 _ _ _ _ (4), - I2G foot _ her class transmission data conversion early ^ 'Transfer data conversion order purchase at least - I2C transmission type: : Interest, for at least one SCSI transfer data age core processing control unit.馨. The main service system of the box service mentioned in the first item of the patent scope, when the core element transmits SCSI __, _ transmission capital 2 for a single tree, the transmission _ conversion list _ the at least - coffee transmission two Material side. The message is converted to at least "transport data format message" and transmitted to the box service master. 8. If the application for the patent scope of the first service main body is to use the box service master-slave system described in 1 item, wherein the box is raised and the plural is left as the environmental parameter to the box service from 19 1263137 ... ............................ End, for the box service to be processed from (4) these operating environment parameters. 9. The box service main body according to claim 8 wherein the operating environment parameters include at least one of a cabinet temperature and a fan state. 10 tree, please turn the patent to the 8th, and the operation is reduced. The operation is reduced by the voltage state of the system in the touch system, the operation of the motor is abnormal, the status of the power supply system (ups) and the backup At least one of the battery states. 11. If the transfer service is referred to as the primary service slave-side green, the cabinet service slave (ESC) system is connected to a SCSI bus. 12. The box service master-slave system of claim 2, wherein the box service is coupled to a display unit to display an environmental parameter. 13. A disk array controller for use with a box service device, the disk array controller comprising: a core processing control unit; and a transmission data conversion unit for converting SCSI transmission data format information Transfer data format information with I2C, 20 1263137 The core processing control single secret is communicated with the transmission data conversion unit by the SCSI transmission coordination, and the transmission data conversion studio is used to convert the (4) transmission tree-type message into the I2C transmission data format information for transmission. The i2c transport protocol communicates with the box service device. For example, the magnetic disk array controller and the box service device respectively have a kc connection port, and the I2C connection line is connected to the I2C connection port. For information transmission. The disk array control crying array controller as described in claim 13 is connected to at least a SCSI device. 16. The disk array controller of claim 15, wherein the at least one SCSI device is a SCSI disk drive. (ID) 18. The disk as described in claim 13 of the scope of the patent, when the cabinet is 1263137. 19. The disk array controller according to claim 13 of the patent application, • the unit transmits at least one SCSI transfer data format message to: Transfer: When converting 7G early, 'Transfer data conversion list means converting at least: format message to at least, transmitting one to the box service device. The invention relates to a disk array controller according to claim 13 , wherein the box service device is configured to provide a plurality of operating environment parameters to the disk array controller, and the disk is provided for the disk array controller. These operating environment parameters are processed. The disk array control described in the second paragraph of the patent, wherein the operational environment parameters include at least one of a cabinet temperature and a fan state. The disk array controller described in the second aspect of the patent application, wherein the reading includes the voltage state of the system of the cabinet system, the operating mode of the system, and the state of the power supply system (Ups). And at least 22 1263137 of the backup battery status. The disk array control described in claim 13 is wherein the disk array controller is connected to a SCSI bus. The disk array controller of claim 13, wherein the disk array control state is coupled to a display unit to display an environmental parameter. 25. A system that uses the I2C interface to serve the master-slave system, including: an Enclosure Service Server (ESS); and an Enclosure Service Client (ESC) with a core Processing a control unit and a Transmission Data Conversion Unit, wherein the core processing control unit communicates with the cabinet service master (ESS) through the transmission data conversion unit, wherein the core processing control unit is Communicating with the transmission data conversion unit by using a second transmission protocol different from the I2C transmission protocol, the transmission data conversion unit is configured to convert the second transmission data format information into an I2C transmission data format message for transmission through the I2C Agreement to communicate with the main body of the box service. 26. The box service master-slave system of claim 25, wherein the box service slave has an e I2C connection with the cabinet service master, respectively, for connecting through an I2C connection. Lines are connected to the I2C connection • for information transfer. 27. The box service master-slave system of claim 25, wherein the box service slave (ESC) system is coupled to at least one device using the second transmission protocol. The box service master-slave system of claim 27, wherein the at least one device using the second transmission protocol is a disk drive using the second transmission protocol. 29. The box service master-slave system according to claim 25, wherein the transmission data conversion unit is a device for simulating a second transmission protocol. 30. If the box service master-slave system described in claim 25, when the box service master transmits at least one I2C transmission data format message to the transmission data conversion unit, the transmission data conversion unit Converting the at least one I2C transmission data format message into at least one transmission poor format message using the second transmission protocol and transmitting it to the core 24 1263137 I...; control unit.匕11一~~~一——J Turtle 31. If the box service master-slave system is described in claim 25, when the core processing control unit transmits at least one transmission data using the second transmission protocol When the format message is sent to the transmission data conversion unit, the transmission data conversion unit converts at least one of the second transmission protocol data format format information into at least - I2C transmission data format message 'and transmits it To the main service of the cabinet. 32. The box service master-slave system as claimed in claim 25, wherein the box service master is configured to provide a plurality of operating environment parameters to the box service from the side of the box service The operating environment parameters are processed. 33. The box service master-slave system as described in claim 32, wherein the operating environment parameters include at least one of a cabinet temperature and a fan state. 34. The box service master-slave system as described in claim 32, wherein the operating environment parameters include an operating voltage state in the cabinet system, an operating current state of the system, and an uninterruptible power supply system (ups) Shape 25 1263137 state and at least the state of the backup battery ° 35 · The cabinet service main terminal system described in claim 25 of the scope of the patent, wherein the cabinet service slave (ESC) system and a use of the The connection lines of the two transmission protocols are connected. 36. The box service master-slave system of claim 25, wherein the box service is coupled from a terminal to a display unit to display an environmental parameter. 37. A data transmission method for a master-slave system of a box service, wherein the system includes an Enclosure Service Server (ESS) and an Enclosure Service Client (ESC), The method includes the following steps: providing a core processing control unit and a Transmission Data Conversion Unit in an Enclosure Service Client (ESC) for transmitting, by the core processing control unit, the transmission data a conversion unit to communicate with the cabinet service master (ESS); the cabinet service master provides the environment parameter of the 5 phase phase to the transmission data conversion unit in a first transmission protocol transmission data format; and 26 1263137 The transmission data conversion unit provides the environment parameter of the box to the core processing control unit in a second transmission protocol transmission data format, and the slave service service slave terminal processes the operating environment parameters. 38. The method of claim 37, wherein the box service slave has a connection with the box service master that conforms to the first transmission agreement, and the source is compliant with the first transmission. The link of the agreement is connected to the ports for data transmission. 39. The method of claim 37, wherein the tank service slave (ESC) system is coupled to at least one device using the second transport protocol. 40. The method of claim 39, wherein the at least one device using the second transfer protocol is a disk drive using the second transfer protocol. 41. The method of claim 37, wherein the transmission data conversion unit is a device that simulates the use of the second transmission protocol. 42. If the method described in claim 37 is applied, the container service owner 27 1263137. The knowledge transmission transmits at least one of the first 'one-to-one-segment value'. The message should be at least - use the first pass agreement:: the two-material conversion unit will be replaced by at least - the (four) round data format message is transferred to the φ ^ 'round transmission data 讯 type message and transmitted to the Core processing control unit. The method of claim 37, when the core processing control 7 transmits at least the transmission data format message of the second transmission protocol to the transmission data conversion unit, the transmission data conversion unit at least The transport data format message using the second transport protocol is converted into at least one transport data format message using the first transport protocol and transmitted to the trunk service master. For example, if the method of applying for the hometown section 37 is applied, the parameters of the operation ring include at least one of the phase temperature and the fan state. 45. The method of claim 37, wherein the operating environment parameters include an operating voltage state in the cabinet system, an operating current state of the system, an uninterruptible power supply system (UPS) state, and a backup battery state. At least one of them. 28 I y Γ\ -% I 广一一一一...~一一 ― % W # -'*»····*%·«««.,— Hy m 〇AJ/ :^ '127 Millennium :"爹(象) is replacing the page and translating the old words _-[旷丨丨脚丨丨丨丨", a ^ ' 46. The method described in claim 37, wherein The cabinet service, h (ESC) is connected to a connection line using the g Haidi transmission protocol. The method of claim 37, wherein the cabinet service is detachable from the end system. The display unit is configured to display an environmental parameter. Φ 48. The method of claim 37, wherein the first transmission agreement is an I2C agreement. 49. The method of claim 37, The second transmission protocol is a SCSI protocol. 鳙5G. Μ Please fill the scope of the 37th item, the towel service is from the end of a disk array controller. XI, schema: 29 1263137 % π VII. Designation of representative drawings: (1) The representative representative of the case is: Figure 3. (2) A brief description of the symbol of the representative figure: Cabinet service main terminal 31 cabinet service slave terminal 32 SCSI bus bar 33 SCSI disk drive 341, 342, 343 core processing control unit 321 transmission data conversion unit 322 I2C connection 珲 323, 311 SCSI connection 埠 324 nc connection line 35 display unit 36 VIII, this case When there is a chemical formula, please reveal the chemistry that best shows the characteristics of the invention.