TWI220198B - The quality of service management for storage system and its method - Google Patents

Abstract

A quality of service management for storage system and its method that according to the storage system's prior setting standard. It gives the different priority levels to the network system's demand (input/output) and follows the level of priority to arrange the order (the data which accessed to the storage system) to provide the different service levels.

Description

Ϊ220198 V. Description of the Invention (l) ----- The present invention relates to a storage system and a method for operating the same, and in particular, a health storage system having a priority and a method for operating the same. ^ With the development of various brain systems and the rapid growth of network systems, the transmission of various shell materials has increased, and data of different attributes are transmitted between network systems anytime, anywhere. Therefore we need to transfer more urgent data immediately Process and control the transfer of data for different attributes. For example, in order to reduce the delay of video data, video and data need to be processed faster than e-mail to maintain the continuity of the image. Therefore, the delay time for carrying live video data must be shorter than that of e-mail data. Please refer to FIG. 1, which shows a conventional block diagram of a storage system. The conventional storage system 12 includes a control unit 丨 2 2 and a storage medium 丨 2 4. Among them, the storage system 12 is coupled to the optical fiber network system. In the optical fiber network system 10, it can be divided into multiple virtual channels 102, and the virtual channels 102 are set to transmit only the same attributes or the same urgency. Information. 4 Referring also to Figure 1, when the host computer 14 on the optical fiber network system 丨 issues an input / output request, the optical fiber network system 10 will determine the nature or urgency of the data to be accessed according to this input / output request. The virtual setting is to transmit the input / output request to the storage system. 02 After the input / output request is processed by the control unit 122, the storage medium 124 accesses the data.

When the data of the same attribute or the data of the same urgency are too much at the same time, all these data will be transmitted by the set virtual channel 102, which will cause the lack of bandwidth; and at the same time, if other The virtual communication 102 transmits only a small amount of data. At this time, these virtual data in the optical fiber network system 10

1220198 V. Description of the invention (2) Not all the bandwidth of channel 102 is used, which results in wasting the bandwidth of optical fiber network system 10. Another known storage system is is CS I (not shown). This storage system uses IP (Internet Protocol, Internet Protocol, abbreviated as ip) as the transport layer, and uses IEEE-802. lp (Institute of Electrical and Electronic Engineers

Electronic Engineers (referred to as IEEE), TOS (Type Of Service, referred to as TOS) rules in the IP layer, RSVP rules, or differentiated service rules' to achieve the purpose of transmitting more urgent data first, but in such storage systems , The same service rules must be used from the host computer to the storage system. In summary, the shortcomings of the conventional storage system are: (1) In a conventional storage system, some virtual channels of the optical fiber network system may cause data congestion due to too many data of the same attribute or the same emergency at the same time. Other virtual channels may waste bandwidth due to lack of or too little data. (2) In a conventional storage system, the same service rules must be used from the host computer to the storage system. The present invention proposes a storage system with service quality management and its operation method. 'The system assigns priority to input / output requests only after input / output requests enter the storage system, so that the bandwidth of the network system can be used equally.' The system can be connected to a variety of different network systems to provide different levels of service. To achieve the above and other objectives, the present invention provides a service product

9870twf.ptd Page 5 ^ 0198 5 Description of the invention (3) Quality =; All :: Provide input / output received by the network system The upper body r contains multiple logical units for recording and reading;:. The quasi-assignment priority :: 路 Road system and storage media 'and according to the preset level, rank ii: output request, and in accordance with the priority of this ^ input / output request to the storage media access order. In a preferred embodiment of the invention, the control unit includes a network & storage interface. The above-mentioned network interface handle is connected to the network core system: = the input / output request received by the loop system. The above garment making device is coupled to the network interface. In addition to processing the input / output request, the priority refers to the priority given to the input / output request, and then according to the priority, the input / output request is arranged to the storage media access master. "] The interface is coupled to the main control device and the storage medium, and accesses the data to the storage medium in accordance with the control of the one-piece garment setting. In the preferred embodiment of the invention +, the main control device includes turn-in, input = ΐ is 1, read-only memory, memory and bridge device. The above-mentioned input / drama · processing state is the processing processing center of the main control device. The above-mentioned memory-only f is coupled to a 5 input / output processor, which is used to store the input / output processor: 1; the above-mentioned ° 1. [Thinkingly connected to the input / output processor, for temporary use. The execution data or cache-driven data of the bucket input / output processor. on

The bridge device provides communication channels for the network interface, input / output processor, and storage interface. Q: In the preferred embodiment of the present invention, the preset reference is the host address reference, the destination reference, or the path reference. The above host address reference is

9870twf.ptd Page 6 1220198 V. Description of the Invention (4) Different host addresses are required for output to assign different levels of priority II! 1 The above-mentioned purpose benchmark assigns different levels of priority according to the logical H element of the data to be accessed by the input / output request. The above path reference assigns different grades of high-quality potential 2 darts according to different ports through which the request for the right to lose is passed, among other things. The purpose of the present invention is to provide an ir: machine with a service product ::: This method of operation is to receive the 'road car' on the network system. 入: Input / wheel output is required. * The control unit of the storage system assigns priority to the input / output requirements. Export the request at the input / recognition port, and then schedule the input / output request to the storage media at the storage level at the temple level according to the priority. The order in which the seedlings access the breeding material, and finally to the storage is to make the above and the present invention easy to understand. The following gives a more detailed explanation of the advantages, advantages, I, and advantages, as follows: Only examples, Subordinate to the drawings, the detailed drawings are not explained: 1 〇: Optical fiber network system 12, 220: Storage system 14, 200: Computer host. 1 0 2 · • Virtual channel 1 2 2 '2 3 0 : Control unit 124, 240 • Storage medium 2 1 0 • Network system 2 5 0: Logic unit 9870twf.ptd Page 7 1220198

2 6 0 · Network interface 2 7 〇 · · Main control device 280: Storage interface 2 9 0: Bridge device 300: Input / output processor 31 0: Read-only memory 320: Memory 330: Queue 3 4 0 : Classifier • 3 5 0: Sequencer S1 0 2 ~ S1 0 8 • Mark the preferred embodiment of each process. Figure 2 shows a block diagram of a storage system with an embodiment of the present invention. Among them, the network management service 222 and the host computer 200. If you are familiar with this technology, the storage system can be an Ethernet system or a fiber optic network system; ^ ^ „240 ^. ,,„ = 邈 Series Early 疋 250. As one skilled in the art knows, the logical unit 25 is composed of ancient disks or magnetic tapes, but not limited to this. The control unit 2 3 0 is coupled to the network system 2 10 and the storage medium 2 4 0, receives the input / output request obtained by the network system 2 1 0, and assigns priority to the input / output request according to a preset reference. 'And according to this priority, the order of input / output requests to the storage medium 240 to access data is scheduled. Please refer to FIG. 3, which illustrates a control of an embodiment of the present invention.

1220198 V. Description of the invention (6) Block diagram of the manufacturing unit. This control unit 2 3 0 includes the solid-state eight-way system 210, which receives and sends out the network system 2 1 0 to get the network request. Furthermore, the main control device 270 is coupled to the network; the output is to be requested in y rounds, and assigned according to a preset reference, “not,” and according to the priority level assigned, 2 / the data is to be stored in the storage medium 240 to access the data The order. Then, a request is sent to the main control device 270 and the storage medium 24. In addition, the control of the interface 2⑽ is used to access the storage medium 240 to access the data. \ ,,,, and the control I set 270 Please refer to FIG. 3 as well. The main control device 27 includes a 3QG rotation control / main control device 27 The computing processing center of 〇 is to process ^ input, and the second output is to store V, and the read-only memory 310 is connected to the input / output: processor, which stores the execution program of the input / output processor 300. Connect == Connect to the input / output processor 30 0, and temporarily store the input / output = ί executive data / cache driver data. In addition, the bridge device = input: / output 4 controller 3. . , The network interface 26 and the storage interface 280 ′ serve as communication channels between the three. Refer to Figure 4 for reference, which shows an embodiment of the present invention.-Master: 3 sets: can not think about the map. The function of this main control device 27 can be software. This function can be implemented in hardware by the main control. Device 2 7 0: Regulation = and refer to Figure 2 and Figure 4, the following assumes that this function is described in the hardware two columns 330 Π 270 'The main control device 270 includes multiple U30 temporary storage by the network system 21 () The input / output request received, the priority of the input / output request temporarily stored in column 330 is different. Furthermore, the classifier reaches these queues 33Q.

9870twf.ptd 1220198 V. Description of the Invention (7) Set a benchmark to assign priority to input / output requests, and send input / output requests to the queue 330 corresponding to the assigned priority level according to the priority, etc. Finally, the sequencer 350 is coupled to the queues 330 and the inputs / outputs in the queues 330. The sequence of accessing data to the storage medium 24 is required. Please continue to refer to FIG. 5, which shows a flowchart of an operation method of a storage system with service quality management according to an embodiment of the present invention. This method is for the storage system to receive input from a computer host on a network system. Output the request (S1 02), and assign priority to the input / output request (S104) according to the preset reference, and then arrange to the storage media access order according to the priority level (S106), and finally in this order to Retrieve data from the storage medium (S1 0 8). Please refer to Figure 3, Figure 4, and Figure 5 together. The host computer 2000 sends an input / output request to the network system 21, and the network interface 26 receives and sends the input / output request to the main control device. In 27〇, priority is assigned to the input / output request according to the preset reference, and according to the priority level, the input = / output request is sent to one of the corresponding queues 330, and then the ranker 350 ranks The input / output requirements temporarily stored in 330 are stored in the storage medium in the order of access to the raw materials, and finally through the storage interface 280 to the storage medium 240. In this? In a preferred embodiment of the present invention, the preset reference may be a host address reference ’, which is a different host address that issues an input / output request to assign the priority of the same level. And the default reference can also be the target base $, which is the logical unit of the data to be accessed according to Zhao's input / output request to assign different etc.

1220198 V. Description of invention (8) priority. Moreover, the preset reference can also be a path reference. It refers to the different ports that pass through when entering the storage system according to the input / output requirements to assign different levels of superiority. The system has the following advantages: (1) The storage system with service quality management of the present invention assigns priority only after the input / output request enters the storage system, so that the bandwidth of the network system can be used equally. (2) The present invention has services connected to various network systems. The quality management storage system can be connected + the invention has been used to limit the invention 乂 γ 乂 乂 "Beiba example as disclosed above, cowpea is not used within the scope of arsenic, ♦: Skilled person, without departing from the essence of the invention The target surround is viewed by the bite * and retouched. Therefore, the scope of the patent application attached to the present invention is defined as the standard of Maoyuebao 1220198. The diagram is briefly explained. Figure 1 shows a conventional storage system. Block diagram; FIG. 2 shows a block diagram of a storage system with service quality management according to an embodiment of the present invention; FIG. 3 shows a block diagram of a control unit according to an embodiment of the present invention; A functional schematic diagram of a main control device according to an embodiment of the invention, and FIG. 5 illustrates a flowchart of an operation method of a storage system with service quality management according to an embodiment of the invention.

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Claims (1)

1220198 、 Patent application scope test 1. A storage system with service quality management for accessing a piece of data from a network = receiving an input / output request. The storage system stores media for recording and recording. Reading the data, and a control unit coupled to the storage medium and the network system, the Ϊ ^ unit assigns a priority to the input / output ^ ^ according to a preset reference and ranks according to the priority Define the order of the input / output request to the storage medium Moon Bean to access the data. = 2 · The storage system with service quality management as described in item 1 of the scope of patent application, wherein the control unit includes: _ — network interface, connected to the network system, for receiving and sending the input / round Output request; a main control device, coupled to the network interface, for processing the input / round-out request, and assigning the priority to the input / output request according to the preset reference, and according to the priority level To schedule the input / output request to the storage medium to access the data; and a storage interface coupled to the main control device and the storage medium for controlling the main control device to the storage medium Access that data. 3. The casting storage system with service quality management as described in item 2 of the scope of patent application, wherein the main control device includes: an input / output processor, which is used as the center of the arithmetic processing of the main control device; a read-only Memory, which is connected to the input / output processor to store the execution of the round-in / output processor; and 1220198 6. Scope of patent application. A memory coupled to the input / output processor for temporarily storing the execution data and cache-driven data of the input / output processor-〇4. .3 The storage system with service quality management as described in item 3, wherein the main control device further includes a bridge device for providing a communication channel of the input / output processor, the network interface and the storage interface. 5. The storage system with service quality management as described in item 2 of the scope of patent application, wherein the main control device includes: A plurality of queues are used to temporarily store the input / output requirements, and the priority levels of the input / output requirements temporarily stored in each queue are different; a classifier is coupled to the queues, To assign the priority to the input / output request according to the preset reference, and send the input / output request to the corresponding one of the corresponding queues according to the priority, etc .; and ^ A sequencer, coupled to the queues, is used to arrange the order of the round-robin / output requests in the queues to the storage medium to access the data. : The system with service quality management as described in item 1 of the scope of patent application, wherein the storage medium includes a plurality of logical units, and the logical units include one of a plurality of magnetic disks and magnetic tapes. 7 · The storage system with service quality management as described in item 1 of the scope of the patent application, where the preset reference is the host address reference, and different levels are assigned according to different host addresses that issue 4 input / output requests That priority. Service quality management as described in item 1 of the scope of patent application 1220198 6. The scope of patent application is based on the input / assignment of the storage system at different levels, where the preset reference is the destination reference. The logical unit that requests access to the tribute is given priority. 9. The storage system with service quality management as described in the scope of the patent application]. [The default reference is the path reference, which assigns the priority of different levels according to the different ports through which the input / output request passes. . H). The storage system with service quality management as described in item 丨 of the patent application scope, which is a multi-disk array storage system. 11 · The storage system with service quality management as described in item 1 of the scope of patent application, wherein the input / output request is issued by a computer host connected to the network system, and the computer host is a personal computer, a server With any of the workstations. ^ 12. An operation method of a storage system with service quality management, applicable to a computer host accessing data through a network system to a storage medium in the storage system, the operation method includes the following steps: receiving from the network The system obtains an input / rotation request; assigns a priority to the input / output request according to a preset reference; arranges the order of accessing data to the storage medium according to the priority level; and to the side storage medium Access data. 1 3 · The operation method of the storage system with service quality management as described in item 丨 2 of the scope of patent application, wherein the preset reference is the host address reference 'according to the different host address from which the input / output request is issued ,Come 1220198 VI. Scope of Patent Application Assign different priorities to this priority. 1 4. The method of operating a storage system with service quality management as described in item 12 of the scope of the patent application, wherein the preset reference is the purpose reference, which is a logical unit to access the data according to the input / output request, Assign different levels of this priority. 1 5. The method of operating a storage system with service quality management as described in item 12 of the scope of patent application, where the default reference is the path reference, and different levels are assigned according to the different ports through which the input / output request passes. That priority. 9870twf.ptd Page 16