Beyond Cloud Computing - Computer technologies now and the future -
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1 Beyond Cloud Computing - Computer technologies now and the future - Toshiaki ARAI Senior Chief Researcher Systems Development Laboratory HITACHI, Ltd., JAPAN SDL, Hitachi, Ltd All rights reserved.
2 Contents 1. History and Evolution of Information Systems 2. Technologies in Cloud Computing 3. Beyond cloud computing 4. Conclusion 1
3 0 Environment surrounding Information Systems 2
4 0-1 Environment Surrounding Information Systems Everything in the world is changing rapidly and globally Information systems have to be adapted to the changes flexibly and promptly Copyright by HITACHI Manufacture Business Government Global Finance Regional Health Care Society Social Infrastructure adaptability flexibility agility Transportation Policy Information Systems 3
5 1 History and Evolution of Information Systems 4
6 1950 Evolution of Information Systems 1-1 Information system have had great progress about every ten years Semiconductor technologies led the progress in the early days Network technologies led the progress in the latter Vacuum Tube Single Execution Transistor IC LSI LAN WAN Batch job Multiprogramming Centralized computing Distributed computing Internet 2010 Cloud Use computers not possessing them 5
7 1-2 Basic Structure Processor Control Unit Memory Instruction Counter (IC) A Add Reg1,(200) Store Reg1,(201) I/O Devices Arithmetic Registers Reg. 0 Reg Copyright by HITACHI Arithmetic Logic Unit (ALU) 6
8 1-3 Stored Program Architecture Keeps programmed instructions in memory as well as data Processor gets an instruction, analyzes it, and executes it Earlier computers had hard-wired structure We had to re-wire, re-structure and re-design the computer when executing another program Stored program architecture does not need any hardware modification when executing another program Re-load the new program in to the memory Concept of software was emerged by stored program architecture Programs can be accumulated and inherited for a long time Information Systems have been able to evolve and progress 7
9 1-4 EDSAC World s First practical Stored Program Computer EDSAC: Electronic Delay Storage Automatic Calculator (1949) Found 73 digit prime number(1951) Computer game:oxo(1952) microphone Data was retained as wave Mercury delay line 17bit 32word=544bit Wave generator output input speaker 8
10 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 9
11 1-5 Single Execution Era Thousands of vacuum tubes Slow and Low reliable A programmer reserved the computer and occupied it The programmer was also the operator, the maintainer, and the designer No OS(Operating System) Everything was done manually 10
12 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 11
13 1-6 Transistor Transistor was invented in 1947, and started its production in 1954 Reliability and power consumption were greatly improved MTBF of Transistor: 100,000Hr. MTBF of Vacuum tube: 1,000Hr. Computer business started High-level Languages and their compilers were introduced FORTRAN(1954): For Scientific Calculation COBOL(1959): For Office Calculation 12
14 Batch job execution Computers were still very expensive in spite of being produced by semiconductor devices Batch Job execution (Automatic job execution) Jobs are gathered and sent to the computer all together JCL controls jobs execution instead of the operator Job Job ジョブ Job Computer Copyright by HITACHI 1-7 An operator tried to use the computer effectively keep the computer in busy, not in idle state The bottle neck was slow manual operation 出 力 結 果 Output output Output JCL(Job Control Language) controls the Jobs 13
15 1-8 Job Control Language $JOB, $JOB, $END $RUN $LOAD Input Data $FORTRAN FORTRAN program $JOB, 10, 66, , ARAI JCL: Job Control Language 14
16 1-9 Punch Card 15
17 1-10 Punch Card 80 Column 12 Hole A 16
18 1-11 Card Punch Machine 17
19 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 18
20 1-12 IC era Processor performance was improved by IC technology Access Gap Problem: Access speed difference Processor Performance was improved Disk access speed stayed in low because of its mechanical operation Disks became the bottleneck and processors could not be used effectively Time Processor Job Copyright by HITACHI IC: Integrated circuit Run Idle Run Idle Run Idle Run Disk I/O operation I/O operation I/O operation 19
21 1-13 Multiprogramming Solution is to overlap processor execution and I/O operation Load multiple jobs in memory When a job enters I/O wait status, another job is executed Processor idle time is reduced Multiprogramming Processor Job 1 Job 2 Disk A Disk B Time Idle Idle Idle Idle Idle Run Run Run Run Run Run Run 20
22 1-14 Technical Issues in Multiprogramming Job management A job might illegally access another job s memory Memory protection and memory management Which job should be executed first? Scheduling and dispatcher Hi-speed processor was bothered by slower peripheral devices Processor was occupied by checking I/O status until the I/O completion, until then An interrupt mechanism was introduced to avoid the wasting processor s valuable time Processor and peripheral devices run independently, and the interrupt mechanism notifies the processor when the device completes the I/O operation Processor can concentrate on its primary tasks Major functions of OSs were already developed in this period 21
23 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 22
24 1-15 LSI era. Hardware performance was greatly improved by LSI technology Variety of user demands Use computer anytime, any where, and for any jobs Process and calculate more data and in great detail LSI: Large Scale Integration A variety of computing process were executed on one big computer TSS: Time Sharing System Each user uses the computer as if he occupies the computer Online execution, Real-time execution, Big batch processing Hundreds of jobs and thousands of TSS users run together Memory problem occurred 23
25 Virtual memory technology 1-16 Copyright by HITACHI Demands for memory capacity became severe Programmers wanted much memory than installed Need for storing much data for analysis and calculation For not concerning the size of memory Administrator wanted to raise multi-program level by loading more users into the memory,and keep processor utilization near 100% Virtual memory virtually gives the users more memory capacity than actually installed OS supplies the virtual memory by using physical memory and disks 24
26 1-17 Virtual memory Users believe the memory is large enough and contiguous, but in reality the parts it is currently using are scattered around physical memory, and the inactive parts are saved in a disk Virtual memory for user1 DAT (Dynamic Address Translation) Physical memory Virtual memory for user2 DAT (Dynamic Address Translation) Currently used Currently used Currently not used Disk 25
27 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 26
28 1-18 Background of distributed processing Microprocessor Intel Corp. began to product microprocessor in 1971 A Japanese company asked it to make calculator easily and cheaply Its performance have been improved continually ARPANET: The Advanced Research Projects Agency Network DARPA (the Defense Advanced Research Projects Agency) created a new network in 1968 The world's first operational packet switching network and the core network of a set that came to compose the global Internet 27
29 1-19 Distributed Computing Multiple computers communicate through network in order to achieve common goal 3-tier model has advantages in scalability and maintenancebility by sharing the responsibility among the servers Presentation tier User interface Logic tier Process business logic Data tier Store and retrieve information from database 28
30 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 29
31 1-20 WWW (World Wide Web) WWW was developed to be a pool of human knowledge, and human culture, which would allow collaborators in remote sites to share their ideas and all aspects of a common project HTTP specifies the protocol among clients and servers HTML describes documents and their structures HTTP: HyperText Transport Protocol HTML: HyperText Markup Language Servers and clients on different hardware or on different OS can communicate each other browser OS Clients HTTP HTML document HTTP Internet HTML document HTTP server OS Servers 30
32 Evolution of Information Systems Vacuum Tube Transistor IC LSI LAN WAN Cloud Single Execution Batch job Multiprogramming Centralized computing Distributed computing Internet Use computers not possessing them 31
33 2 Technologies supporting Cloud Computing 32
34 2-1 Cloud Computing Cloud is a new computing style that we can use scalable huge computing resources as a service through the Internet Cloud computing is spreading rapidly Cloud Users Cloud Provider Need not own computers and expertise in the technologies Internet Huge Computing Resource Utilization Scalable On-Demand 33
35 2-2 Technologies Supporting Cloud On Demand Pay per Use System manager Virtual Resource Pool Physical Resource Copyright by HITACHI Cloud Provider supplies the resources rapidly and effectively according to the users requests Cloud consists of a collection of virtualized computer resources Server Resource Mgr. VM VM VM VM VM VM Storage Resource Mgr. LU LU LU LU LU LU Network Resource Mgr. VPN VPN VPN VPN Users VM: Virtual Machine LU: Logical Volume VPN: Virtual Private Network Server Server Virtualization Storage Storage Virtualization Cloud Provider Network Network Virtualization 34
36 Server Virtualization(Virtual Machine) Construct multiple virtual machines on a single physical machine, and run an operating system on each virtual machine independently VMM virtualizes physical resources such as processor and memory, and assign them to each VM Application 1 Guest OS 1 Virtual machine (VM1) Copyright by HITACHI 2-3 Application 2 Guest OS 2 Virtual machine (VM2) Application n Guest OS n Virtual machine (VMn) CPU CPU CPU Virtual resources Virtual resources Virtual resources Virtual machine monitor (VMM) Resource access simulation Physical machine hardware CPU Physical resources (processor,memory) 35
37 2-4 VMM simulates resource access Guest OS believes that it accesses physical resources When guest OS issues resource access instruction VMM intercepts the issued instruction And simulates as if issued instruction is executed by accessing the physical resource which is corresponding to the virtual resource Guest OS Issues resource access instruction VMM Intercept Simulate the issued instruction (Guest OS believes it is physical resource) Virtual resource Physical resource Mapping 36
38 2-5 Storage CapacityThe world s first HDD History of storage Storage is the most important element in information systems because information is permanently stored only in storage 1PB 1TB 1GB RAMAC (1956) 5MB SLED (1980) 2.52GB 1940 HDD: Hard Disk Drive SLED : Single Large Expensive Disk RAID : Redundant Arrays of Inexpensive Disks SAN : Storage Area Network RAID (1990) 34GB SAN -Network Storage- (1995) 2963GB Computer Era Storage Virtualization (2004) 32PB Time 37
39 2-6 History of storage configuration Storage configuration has been evolved for easy usage SAN consolidated storages and solved capacity unbalance Storage virtualization reduces management cost Storage Islands Servers Physical Consolidation Servers Storage Virtualization Servers SAN Virtual Storage DAS A storage is directly attached to a server. Networked Storage Servers and storages are connected with one another. Many Storages Servers are connected to a virtual storage. DAS: Direct Attached Storage, SAN: Storage Area Network 38
40 2-7 Problem in SAN Multiple heterogeneous storages in a SAN due to information explosion Each storage is operated by the specialized operator and administrator Storage operation and administration cost increased Heterogeneous Servers PC server Mainframe Unix server Linux server SAN Lots of different types of storages Heterogeneous Storages Storage A Storage B Storage C Storage D Storage administration Storage operation (e.g., backup) Specialized operator for each storage 39
41 2-8 Heterogeneous Servers Solution (Storage Virtualization) Storage virtualization provides virtual storage with common feature Virtualization mechanism hides the characteristics of heterogeneous storages Storage operations are unified Administration and operation cost decreased PC server Mainframe Unix server Linux server Copyright by HITACHI SANRISE USP Heterogeneous Storages Single storage administration ~165/332TB Common storage features (Archive, Backup, Migration) Virtualization mechanism Storage A Storage B Storage C Storage D Unified storage operations 40
42 2-9 Another Problem in SAN Provisioning difficulty due to information explosion. Increasing cost of HDDs for over-provisioned volumes Need service outage for expanding capacity (Provisioning: Capacity planning for volumes) Dept.A Dept.B Dept.C Copyright by HITACHI Servers SAN Used:1TB Smaller parts are used at the beginning Overestimate Conventional Storage 0.2TB 0.3TB 0.5TB 5TB 10TB 15TB Volumes HDDs Big Gap!! Prepared:30TB Over Provisioning 41
43 2-10 Copyright by HITACHI Solution (Thin Provisioning) Thin provisioning technology provides on-demand allocation for HDDs during data writes. Pool for virtual storage is virtualized Decreasing cost of HDDs due to using less HDDs Non-stop expansion for Thin provisioning pool Dept.A Dept.B Dept.C Servers Data Write Pool for virtual storage is virtualized HDD is allocated to used area only on-demand allocation SAN 0.1TB 0.3TB 0.5TB 5TB 10TB 15TB Virtual Volumes ThinProvisioning pool Non-stop expansion Used:1TB Prepared:1TB 42
44 2-11 Integrated solutions Combination of storage virtualization and thin provisioning Decreasing both operational cost and HDD cost Large thin provisioning volume pool Single storage administration Unified storage operations Storage A Storage B Storage C Storage D 43
45 2-12 Virtual Private Network(VPN) VPN creates secure network as if it is a private network on a public network Cryptograph data on a public network Users unaware of using public network Internet 44
46 2-13 How VPN works Tunneling Regional Office IP tunnel Head Office User B VPN gate D Internet VPN gate C Sever A Data Source B Destination A Data Source B Copyright by HITACHI Gate D intercept a packet from B to A Encapsulate the packet and send the encapsulated packet to Gate D Decapsulate the packet Sent it to A Encapsulation Decapsulation Destination A Source D Destination C Data Source B Destination A 45
47 2-14 System Manager System manager allocates virtualized resources in the pool to the users on the demand Voiding the resource shortage and effective allocation are required Users On Demand System manager Virtual Resource Pool Server Resource Mgr. VM VM VM VM VM VM Storage Resource Mgr. LU LU LU LU LU LU Network Resource Mgr. VPN VPN VPN VPN Pay per usage Physical Resource Server Storage Network VM: Virtual Machine LU: Logical Volume VPN: Virtual Private Network Server Virtualization Storage Virtualization Cloud Provider Network Virtualization 46
48 2-15 System Manager Inside Cloud Repeat the management cycle (monitor, predict, analyze, action) Advantages of cloud computing are achieved by system manager Predict resource shortage Physical resources Resource allocation Monitor Resource usage Relation Analyze root cause Virtual resources <Action1> Modify resource allocation rate Action <action 2> Migrate a virtual server to another physical server 47
49 3 Beyond Cloud Computing 48
50 3-1 Cloud era. has just started Power Business Banking Finance Copyright by HITACHI As cloud computing becomes naturally used as social infrastructure, various types of data will be stored to the cloud Knowledge -empowered service using the massive data collected and the computing power owned by cloud will be emerged Sales Transportation Social Infrastructure traffic Massive real world data DB Server KaaS: Knowledge AP as a Service the Storage cloud era. Cloud Authentication New business model for IT business to grow to in Network 49
51 KaaS: a New Growth Model Customer Copyright by HITACHI 3-2 KaaS services extract and present valuable information(knowledge) from the large volumes of data generated by social infrastructure Big Account Big Account SMB SMB End User End User Knowledge Plant Traditional Service Sensor Data from Real World Knowledge Platform Knowledge as a Service Value Added Data (Knowledge) Existing business/service Cloud Value added business/service 50
52 3-3 KaaS Example (Knowledge Convergence) The electric power optimization of whole society by the collaboration of power companies with manufacturing companies Kaas would help to optimize our social system totally by leveraging information beyond industries Power control services for utility industry Plan for highly optimized power generation Optimized power generation and consumption SCM services for manufacturing/retail industries SCM plan for electricity optimization Copyright by HITACHI Power Consumption Generation history Analysis Generation plan Each cluster generation/ Root based Consumption demand trend pattern Modeling Information exchange Each SC cluster production/ warehousing trend/sales pattern Knowledge Plant SCM: Supply Chain Management SCM Plan Each SC production/ demand trend Modeling Receive, Order, Sales Production, Logistics, Warehousing Analysis 51
53 3-5 Copyright by HITACHI KaaS System Architecture Handle large volumes of data and perform complex computation Analyze the data from a range of different perspectives Temporal and spatial data FW Application tier Knowledge processing tier (KaaS-Core) Time series data FW Media data FW Statistics Model building Model application Visualization, HI Data management tier (KaaS-Base) Structured data management, privacy protection Parallel distributed processing (MapReduce) Data storage (DFS/RDB/KVS) Stream processing Dynamic computing resource management platform (Cloud) the integrated and efficient handling of various types of data FW: framework, HI: human interface, DFS: distributed file system, RDB: Relational Database, KVS: Key Value Store 52
54 3-6 RID job name Addr. Copyright by HITACHI Personal information item Anonymization for Personal Data sex age purchase date Restricts simultaneous access and assigns multiple IDs Item-specific ID control Information granularity control RID: Real ID PID: Pseudonymous ID PID1nameaddr area name job item addr item item Privacy protection is the one of most important issues in cloud Anonymizing makes it impossible to identify individuals identities Control personal IDs according to identification risk of personal data and property of applications Basic item: can identify individuals in combination Sensitive item Anonymizing Platform K-anonymization: At least k instance in any dataset PID2 PID3 large Applications Accounting Shipment Stock Management Customer Analysis small Impact of leakage= Identifiability sensitivity 53
55 Knowledge-Based Society by KaaS Traditional Service Raw Data Knowledge Plant Knowledge Service Knowledge Traditional Service Knowledge Service Traditional Service Raw Data Knowledge Plant Knowledge Service Knowledge Traditional Service Knowledge Service Raw Data Knowledge Raw Data Knowledge Plant Knowledge Copyright by HITACHI 3-7 The knowledge-based society using Cloud Computing is coming Based on the real world information, it supports resolution of today s global challenges (eg. Energy,environment,transportation). Anyone can unconsciously obtain the benefits from the knowledge. Knowledge Plant Traditional Service Knowledge Service Traditional Service Knowledge Service Raw Data Knowledge Plant Knowledge Raw Data Knowledge Plant Knowledge Kaas concept will help to optimize our social system totally 54
56 4-1 Conclusion Information Systems have been evolving for more than 60 years Cloud computing is a one of compilation of the researches and development on Information systems We believe that a new service KaaS contributes to innovation in social infrastructure 55
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