Distributed Server
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Large networks often use distributed server configurations to improve efficiency by having servers located on each subnet. Maintaining distributed servers requires coordinating configuration information among the servers while still allowing for central control. The document discusses considerations for system architecture when using distributed servers including supporting specific platforms or high volumes through separate clusters for presentation, application, and content integration servers.
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This document discusses storage virtualization on servers. It begins by defining storage and virtualization, explaining that virtualization allows system resources like storage to be divided into virtual resources. It then discusses server virtualization specifically and how storage can be virtualized on individual servers through volume managers that abstract physical disks into logical volumes. The benefits of storage virtualization on servers are efficient use of resources and integration of multiple storage systems, though it requires software on each server.
Oracle Web Logic server
Oracle WebLogic Server is a scalable, enterprise-ready Java application server that supports the deployment of distributed applications. It provides a robust, secure, highly available environment for deploying mission-critical applications. WebLogic Server supports Java EE standards and enables enterprises to configure clusters of servers to distribute load and provide failover capabilities. The key components of a WebLogic domain include the administration server, which manages the domain configuration, and multiple managed servers that host applications and services. Clusters group managed servers to provide scalability and reliability. WebLogic Server is managed through the administration console and WLST and can be monitored using Enterprise Manager.
A Comparison of PowerVM and x86-Based Virtualization Performance (October 2009)
A Comparison of PowerVM and x86-Based Virtualization Performance (October 2009)IBM India Smarter Computing
PowerVM is IBM's virtualization technology for its Power Systems servers. It allows consolidating multiple workloads onto a single physical server through logical partitioning. A comparison of PowerVM and x86 virtualization shows that PowerVM achieves higher performance and resource utilization. Industry-standard benchmarks like TPC-C and SAP SD 2-tier show PowerVM maintaining or exceeding native performance levels, while x86 systems see performance decreases with virtualization. PowerVM's tight integration with the Power hardware and firmware delivers benefits like stronger isolation, scalability, and availability compared to software-based x86 virtualization.A Comparison of PowerVM and x86-Based Virtualization Performance
Virtualization technologies allow IT organizations to consolidate workloads running on multiple operating systems and software stacks and allocate platform resources dynamically to meet specific business and application requirements. Leadership virtualization has become the key technology to efficiently deploy servers in enterprise data centers to drive down costs and become the foundation for server pools and cloud computing technology. Therefore, the performance of this foundation technology is critical for the success of server pools and cloud computing.
Netserv Technology Services
The document discusses several of the company's technology offerings:
- Web services which enable interoperability and support service-oriented architectures.
- Infragistics controls which provide rich client features and avoid screen issues while enabling advanced application functionality.
- NetDirect, a neutral SQL engine that can handle different database types.
- Business intelligence and data warehousing services including report conversion, ETL maintenance, and SQL Server database tuning.
W23 - Advanced Performance Tactics for WebSphere Performance
IBM European WebSphere Technical Conference 2010 presentation
Application performance issues can be difficult to resolve but can seriously impact your business. In this session we provide you with a solid overview of performance best practices for the current WebSphere Application Server runtime. We will go over a number key components and provide you with real examples of application performance issues from the field. Topics include the JVM and recent advances in Garbage Collection, JMS, the EJB container, the Dynamic Cache Service, HA Manager, thread pooling and transaction management. Note that this session is not an overview of product benchmarks.
Server And Hardware Virtualization_Aakash1.1
This document is a presentation on server and hardware virtualization that was prepared by Aakash Agarwal from open source documents. The presentation covers components of VMware server virtualization like hypervisors, virtual machines, vMotion, and virtual switches. It also discusses VMware virtualized host interfaces like VMXNET, e1000, and vlance interfaces. Finally, it provides an overview of Cisco UCS components and architecture. The presentation is intended to share knowledge and does not contain any confidential information.
Hyper-V’s Virtualization Enhancements - EPC Group
This document discusses new features and enhancements in Hyper-V virtualization in Windows Server 2012. It addresses industry trends driving changes in IT including new apps, device proliferation, data explosion, and cloud computing. Windows Server 2012 Hyper-V aims to scale workloads cost effectively, build private clouds, and securely connect to cloud services. New features allow for improved scalability and performance including support for 64 virtual processors and 1TB RAM per VM. It also improves connectivity through features like shared nothing live migration, network virtualization, and identity federation across clouds. These enhancements help organizations respond quickly to business needs, control costs, and connect datacenters securely.
Cloud architecture
The document discusses cloud architecture and describes the different layers of cloud computing including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It explains how virtualization allows for the pooling of computing resources and rapid provisioning of these resources. The document also discusses multi-tenancy and how a single software instance can be configured for multiple tenants' needs in a SaaS environment. As an example, it describes how a payroll processing application currently used by multiple government departments could be migrated to a cloud environment for improved maintenance and reduced costs.
lect 1TO 5.pptx
This document discusses distributed computing and virtualization. It begins with an overview of distributed computing and parallel computing architectures. It then defines distributed computing as a method for making multiple computers work together to solve problems. As an example, it describes telephone and cellular networks as classic distributed networks. The document also defines parallel computing as performing tasks across multiple processors to improve speed and efficiency. It then discusses different types of virtualization techniques including hardware, operating system, server, and storage virtualization. Finally, it provides overviews of x86 virtualization, virtualization technology, virtual storage area networks (VSANs), and virtual local area networks (VLANs).
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More from Rajan Kumar
Solar Sunseekar
The document describes a student project called the Solar Sunseeker. It consists of a solar plate, light dependent resistor, gear motor, battery, and inverter to convert sunlight into electrical energy. The solar plate uses photons from sunlight to transform electrons and generate an electrical charge. The system uses active solar techniques to capture, convert, and distribute sunlight for applications like urban planning, agriculture, lighting, water heating, and cooking.
Cmos Sensor
This document discusses the design of an active CMOS sensor array for electrochemical biomolecular detection. The sensor array allows for highly parallel analysis by miniaturizing the sensing platform and enabling multiple working electrodes on a single chip. Each sensor contains a gold working electrode that can detect changes from DNA hybridization through electrochemical techniques like cyclic voltammetry and potentiostat control circuits. While CMOS sensors provide advantages of reduced size and complexity, limitations include lack of suitable electrode materials and voltage compatibility with standard CMOS ICs.
Wind Turbine
This document outlines a major project to design a vertical wind turbine as a renewable energy source. It discusses the objectives of applying theoretical knowledge practically and the advantages of vertical wind turbines over horizontal axis wind turbines, namely that they can harness wind from any direction and are easier and less costly to build. The estimated cost for the vertical axis wind turbine project is Rs. 2000,000 to Rs. 3000,000.
Wind Mill
The document discusses the basic requirements and design considerations for running a wind mill. It notes that atmospheric pressure should be 8.5 bar and efficiency increases 100% for every 10 meters in height. Blades should be airfoil shaped and made of materials like NACA 44 or 63 to withstand all weather conditions. Running wind mills faces challenges of being unpredictable, intermittent, and occupying large areas for power production. Materials used include aluminum sheets, hub, main shaft, bearings, gearbox, generator, and worm gears. A model demonstrates how moving air contains kinetic energy that can be calculated and converted to power.
Wimax
This document summarizes a seminar presentation on proposing an adaptive bandwidth request scheduler for real-time polling service (rtPS) in WiMax networks. The proposed scheduler aims to estimate data arrival rates and calculate adaptive time slot allocations to address problems in the standard rtPS scheduler, such as requests made before grants are received. Analysis shows the adaptive scheduler reduces average queue lengths and delays compared to conventional scheduling. In conclusion, the adaptive approach requires smaller buffers and decreases delays significantly for rtPS traffic.
Voip
VoIP is a technology that allows phone calls to be made over the internet. It works by converting analog voice signals to digital data that is sent in packets over IP networks. Common VoIP technologies include H.323, SIP, and RTP. VoIP can be implemented through analog telephone adapters, IP phones, or computer-to-computer calls. While VoIP provides benefits like low costs and integration with other applications, it also faces challenges related to quality of service, emergency calls, and lack of redundancy in case of power failures.
Virtual Private Network
A dynamic virtual private network (DVPN) allows secure connections between remote users and private networks through virtual connections over public networks like the internet. It provides enhanced security, can accommodate changing user communities dynamically, and maintains integrity over user access rights and data security over time regardless of technological changes. Key features include distributed access control, application independence, access control based on authenticated user identities, and support for user groups. DVPNs establish trust in open network environments through flexible yet finely-controlled security.
Temperature Distribution In Journal Bearing
The document summarizes an experimental study on the temperature distribution in journal bearings. The study aims to calibrate thermocouples, determine viscosity, study the variation of temperature distribution with load and speed, and select the best lubricant. The apparatus includes a journal, motor, bearings, regulators, frame, voltmeter, lubricants reservoir, thermocouple wires, and viscosity tables. The cost of the project is estimated to be above Rs. 20,000. A diagram shows the journal bearing setup with a thermocouple circuit. Temperature readings will be taken around the journal circumference and length to analyze behavior under different lubricants and operating conditions.
Soler Car
The document discusses the design and components of a solar car created by students. The solar car is powered solely by solar energy collected from photovoltaic panels on the roof of the car. It describes the key parts of the car including the chassis, wheels, motor, solar panels, and battery. Diagrams provide details on the dimensions and arrangement of these components to power the car using only energy from the sun.
Sensors On 3d Digitization
The document discusses different types of sensors used for 3D digitization, including passive and active vision techniques. It describes synchronization circuit-based dual photocells that improve measurement stability and repeatability. Position sensitive detectors are discussed that can measure the position of a light spot in one or two dimensions on a sensor surface to acquire high-resolution 3D images. A proposed sensor architecture combines color and range sensing for applications like hand-held 3D cameras.
Iptv
IPTV provides television services over IP networks. It has several key components, including video encoders, video servers, middleware, conditional access systems, and set-top boxes. Video is encoded and transmitted over the network in IP packets. IPTV allows for features like video on demand and a better quality of service than internet TV. While it provides benefits like interactivity and switched digital channels, IPTV also faces challenges like packet loss and limited support for high-definition content. It has applications for distance education, electronic government, and corporate training in addition to television and entertainment. IPTV is expected to grow as networks converge, but still needs widespread adoption in India.
Holography
Holography is a technique that uses the properties of light interference and diffraction to record three-dimensional information of an object. The document discusses the history and principles of holography, how holograms are constructed and reconstructed, different types of holograms and their applications in microscopy, interferometry and more. Holography allows the recording and reconstruction of three-dimensional images from a two-dimensional surface, providing depth perception and parallax.
Foult Tolerence In Distributed System
Distributed systems use multiple autonomous computers that communicate via messages to improve processing throughput, allow for CPU specialization, and provide fault tolerance. Faults in distributed systems can include data corruption, hanging processes, misleading return values, hardware/software/network outages, and resource overcommitment. To provide fault tolerance, processes are replicated across multiple computers so the system can continue functioning even if some processes fail. There are different types of faults like crash faults, omission faults, and Byzantine faults. Recovery from failures can use backward or forward recovery approaches.
Hydraulic Ram
A hydraulic ram is a simple water pump powered by hydropower that takes water at one pressure and flow rate and outputs it at a higher pressure and lower flow rate. It has two moving parts - a waste valve and delivery check valve. Water flows through an inlet drive pipe until it closes the waste valve, creating pressure to open the delivery check valve and pump some water to the outlet delivery pipe at a higher elevation than the source. The pressure vessel cushions pressure fluctuations and improves efficiency. Properly designed, a hydraulic ram can pump water with 60-80% efficiency using only the force of flowing water.
Implementation Of Bss And Nss In Mobile Communication
The document discusses the Base Station Subsystem (BSS) and Network and Switching Subsystem (NSS) in mobile communications. The BSS connects the mobile station to the NSS and consists of the Base Transceiver Station (BTS) and Base Station Controller (BSC). The NSS includes the Mobile services Switching Center (MSC), Home Location Register (HLR), and Visitor Location Register (VLR). Together, the BSS and NSS provide critical functions such as mobility management, call control, and short message services that enable mobile communication.
Infiband
Infiband is a new architecture designed to support input/output for internet infrastructure through communication links between processors and I/O devices using the IBA standard. The IPOIB working group completed defining how to run IP over infiband by publishing three RFCs with a fourth pending, but it is best to close the working group as activity has slowed, though some individuals may continue MIB work by submitting as an AD sponsored document when complete.
Smart Cards
This document discusses smart cards, which are plastic cards with embedded integrated circuits that can securely store and process data. Smart cards use security mechanisms like passwords, cryptographic challenges, and biometrics to authenticate users and verify the identity of terminals. The document outlines the components of smart cards like memory, processors, and card readers. It also describes common applications of smart cards like banking, ID verification, and wireless communications. The goal of the project discussed is to define a standard set of commands for smart cards to enable their use in Indian applications.
Jini
JINI is a distributed system architecture developed by Sun Microsystems that allows devices to dynamically join and detach from a network without configuration. It provides code mobility, is protocol agnostic by using Java interfaces, and enables leasing for network robustness and self-healing. The JINI architecture consists of services that can be discovered by clients using a lookup service. Services register with the lookup service and clients use proxies returned by the lookup service to directly invoke methods on services.
Fluorescent Multi-Layer Disc
Fluorescent multi-layer disc (FMD) is a new optical data storage technology that stores digital data in three dimensions across multiple layers, similar in size to CDs and DVDs but with much higher storage capacity of up to 50GB+. FMD works on the phenomenon of photochromism to obtain fluorescent properties from the fluorescent material used and allows for parallel reading and writing across layers at speeds of up to 1GB/sec. FMD provides advantages over traditional optical discs like CDs and DVDs such as greater storage capacity, faster access, and compatibility with existing formats while avoiding the interference issues of coherent light used in other technologies.
Manet
This document summarizes a seminar presentation on Mobile Ad-Hoc Networks (MANETs). It introduces MANETs as networks without infrastructure where nodes can connect in dynamic and flexible topologies. It discusses routing challenges in MANETs due to the dynamic topology. It also summarizes several routing protocols used in MANETs like DSR, DSDV, CGSR, ABR and SSR, which aim to establish and maintain routes between nodes that are moving. Finally, it discusses security and performance issues in MANETs and proposes the dynamic virtual backbone approach to abstract node mobility.
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