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irvine search engine optimization

15 Aralık 2010 Çarşamba

"Yourlocalmerchant.com" is an Internet Search Engine Marketing company based out of Irvine, CA. Since 2007, our specialists have been moving local business just like yours to the top of all major search engines. We specialize in making sure local businesses reach their maximum online local coverage and turn searches into sales each and every day! Yourlocalmerchant.com team has years of experience in marketing, advertising, media, web design and internet search. This experience combined with our knowledge of today's leading Major Search Engines places Yourlocalmerchant.com in a top position to help local businesses navigate the fast paced world of internet search by driving local customers to your business through internet searches. Yourlocalmerchant.com has a unique SEO solution to make sure your business gets maximum exposure in all areas of Internet advertising.

Yourlocalmerchant.com SEO specialists work with every individual business to ensure that you will receive top local positioning. The benefits to your business will include more exposure and easier access for your customers to find you on multiple search engines.

Yourlocalmerchant.com takes advantage of the exploding trend in the local search market and the emerging Search Engine Technology. The majority of internet users visit The 3 major Search Engines when they look for local businesses. In 2006, about eight billion searches were done online with over half of them looking for a local business like yours. Of these users, 75% do business with the companies located on the front page of all Top-tier Search Engines. This means that if your business does not come up with noticeable ranking in Local Searches of the Major Search Engines, you won't be found online.

We also provide many other Internet marketing options to help drive business through your doors day after day and in any economy. These options include: Customized Videos, Pay per Click campaigns, Customized Websites, Analytic reports, Call Tracking, Dedicated Support, as well as keeping up with the ever-changing world of Internet Marketing and Local search.

Join the network of hundreds of local businesses who count on Yourlocalmerchant.com to help their businesses be found and turn searches into sales.

Thank you for inquiring and we hope to be your Internet Advertising solution for years to come.


Labels:

auto insurance search

10 Auto Insurance Quotes Average Savings $452!

Auto insurance quotes - we understand the importance of finding a one-stop-shop for savings and superior coverage on not only your insurance but possibly all the insurance for your household. Our comparison process is simple, and we aim to provide you with enough information so you can make an intelligent decision on how to pursue your auto insurance. First, take 2 minutes to fill out the form on our web site, and you will receive 10 quotes from the most well know companies in the industry via email, NO hassles! No sales people calling you afterwards once a week and now spam mails bugging you about your decision on auto insurance quotes. Auto Insurance Quotes Testimonial

Auto Insurance Quotes Online or Over the Phone

Drivers can get online insurance quote in minutes filling out the online form or or work 1 on 1 with a professional over the phone. Either way, rest assured knowing that one of our licensed consultants will shop your auto insurance policy among multiple providers to guarantee your low rate.

Save $40 A Quotes in Minutes

In the mean time, feel free to browse through our site and get access to the most current auto insurance quotes information all in one place. Have you heard about the Home Auto Discount which can save you an additional 35% on your auto insurance each month? By combining policies with one vendor you will be able to enjoy additional savings on other insurance policies you car. Our FAQs cover everything you need to know from standard insurance coverage to savings tips. Also check out our Drivers Blog to get the latest news in auto care, fuel savings, industry news, maintenance tips, and where to find the best deals onauto insurance quotes.

Cheap Insurance Auto Insurance Quotes

It is not surprising that many auto owners are preoccupied with the search and location of cheap insurance. Everyone wants to save money especially when the job market is tight. Like anything else cutbacks usually mean making sacrifices. In this case a sacrifice in auto insurance coverage could really have a impact on your families finances if you were to become involved in a serious accident. State minimum coverage does really not offer much security and peace of mind. The search for cheap insurance can be frustrating because the market is flooded with a lot of hype that does not necessarily give the customer the facts. So take 2 minutes and fill out the form on the page. Use these quotes as a baseline will you make your decision on Auto Insurance Quotes.

Auto Insurance Quotes Conclusion

If you are happy with the quotation, then the next step is not follow up with the company providing the best auto insurance quote solution. Remember the quote and the state minimum rates are your baseline. You should modify the auto insurance policy to adapt to your life style. For example if you are in sales and travel allot by auto, then perhaps you want to extend your coverage in certain areas. The more time you spend on the road the higher the chances your auto will be involved in an accident. At any rate use this site as a method of contacting ten top companies and finding the best auto insurance quotes.



Labels:

windows search email indexer

Windows Search Indexing

How the System Index works

Maintain a record of any document or application on your PC, and the contents found within those items, using the Windows Search system level index. This supports indexing for over 200 common file types out of the box and allows users to instantly find almost any document—including e-mail messages, calendar events, contacts, and media files—stored on their PC. All they have to remember is a filename, keyword, tag, or even text found within the file or e-mail itself.

The system index must complete an initial scan of your PC, and as new files and e-mail messages arrive, they are indexed when the PC is idle—becoming searchable shortly thereafter. Following the initial scan, the software then updates the index and continually monitors the system for changes. Subsequent scans for new files or e-mail messages require a fraction of the time and PC resources to keep the index up to date.

By default, Windows Search indexes only the contents of each user's "Documents" and "Favorites" folders, the "Public" folder, and the default mail store on their PC. With administrator privileges, users can configure the system index to include other folders or volumes on the same PC, include specific network folders and e-mail accounts, or include or exclude specific file formats. The IT administrator can also modify these and other settings using Group Policy. To learn more, go to the Windows Search 4.0 Administrator's Guide.

With regards to security, access to each piece of the index is protected by an access control list which corresponds to the access permissions on the data indexed. The Windows Search index is also obfuscated so that it is not easily readable if someone tries to open the index file. In addition, at no time are the contents of the system index or user information sent to Microsoft or other third parties. User information is held to the highest levels of security and privacy. Lastly, while Windows Search 4.0 supports the indexing of encrypted files that users have permission to access, encrypted files are not made available in search results from remote (PC-to-PC) search.

Overview of file types

Windows Search will search all content in the most commonly used file types—including text files, Office Word documents, Office Excel spreadsheets, Office Outlook, Windows Mail, and Outlook Express items, and Web pages. PDFs can also be searched with the installation of a PDF IFilter. For more information on file types, please review the Searchable File Typespage.

Note: To search Outlook e-mail messages, appointments, and contacts you must have Outlook 2003 or later installed. The system indexes Outlook e-mail while Outlook is running.



Labels:

universal remote code search

Getting Started with Phillips Remotes

As mentioned, Philips offers dozens of types of universal remote controls, from the standard long black type to sleek, extremely high tech touchscreen models that program themselves. Fortunately, though, the models that require programming all follow the same, basic, easy to follow steps.

RemoteBefore beginning the process of programming your universal remote, note how many devices your particular remote is capable of controlling. Then, consider which devices you want to program whether it is your TV, DVD, DVR, stereo, or other electronic and home theater equipment. Start with the first device and follow the steps to program your Philips universal remote all the way through. When you are finished, complete the steps for the second device, and so on.

Photo Credit: sxc.hu/Asif Akbar

Program the First Device by Entering Direct Codes

Your Philips universal remote control comes with a list of codes for devices by brand name. Find the first code for the brand name and type of device you wish to program. Turn all of your devices off, and then manually turn on the device you want to program. Press the Setup button on your the universal remote and continue to hold it down until the indicator light stops flashing and remains solid. Release the Setup button.

Programming a RemotePress the Mode button for the type of device you want to program on your Philips universal remote, such as the TV or DVD button. Release it immediately and make sure the indicator light is illuminated. Enter the first possible four-digit code on the universal remote, and then press another button on the remote to see if the device is now programmed, such as the volume control or power button. If the device responds, you have successfully programmed your Philips universal remote. If not, turn the device off and back on and follow the steps again using the next code on the list. Repeat until the device successfully responds.

Photo Credit: sxc.hu/sanja gjenero

How to Program a Remote Using Code Search

Your Philips universal remote has a built-in code search feature that will find the correct code for your device. This process may take longer than using direct code entry, but can be helpful if you do not have access to the code list or if the brand for your device is not listed.

Make sure all of your devices are turned off, and then manually turn on the first device. Press the Code Search button and hold it down until the red indicator light stays illuminated. Press the Mode button for the type of device you want to program on your Philips universal remote, such as the TV or DVD button. Release it immediately and make sure the indicator light is illuminated. Press either the Channel button (on a television or stereo, for example) or the Play button (on a device without channels, such as a DVD player or DVR) until the device responds. You may have to press the button up to 300 times. Each time you press the button, the Philips universal remote tries a new code. When the code works, press the Mute button on the Philips universal remote and the code will be stored.



Read more: http://www.brighthub.com/electronics/home-theater/articles/43501.aspx#ixzz18BO4JhDA


Labels:

mba online search

Search Funds, Business Angels and Your Post-MBA Career

As a potential or current MBA graduate, you’ve probably done considerable research into what you can do with yourself after you finish your degree. But there is a small and relatively untapped pool of opportunities for outstanding graduates that has been growing recently, and it involves partnering with ‘Business Angels’ and creating something called a ‘Search Fund’.

Business Angels, if you’re unfamiliar with the term, are smaller, usually private investors who will club together to provide venture capital for a new business. Think of them as friendly ‘Dragons’ (alaDragons’ Den). A search fund works by using about ten Angels to back an MBA candidate in researching and finding a suitable fledgling business for a management buy-in, and a quick exit only a few years later.

The MBA, guided by their Angels and tutors, will perform market research in order to identify a suitable candidate business. Once one is found the MBA is installed as the executive in a management buy-in, and the capital from the Angels used to grow the business. It sounds extremely risky, but the average IRR for search funds in the UK is around 22%, and this goes up to about 32% on US soil.

A typical case would be Simon Webster, who was approached to start a search fund while studying at London Business School. After a search of two years he eventually identified a clinical prosthetics business with predictable revenue streams and strong management. Once the business was identified he raised £3m and bought into it. Over the next 12 years he grew the business tenfold, wrote his own ticket and the Angels achieved an annualised IRR of 20%.

If you’re looking for a less conventional career path after your MBA, which many graduates now must do, then partnering with a search fund might be an incredibly lucrative and exciting option.



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fabric server

FabricServer Technology Overview - Presentation Transcript

  1. Package, Deploy and Manage Enterprise Applications on Physical, Virtual or Cloud-Based Environments FabricServer
  2. FabricServer
    • FabricServer is management software used to package, deploy and manage enterprise applications on physical, virtual or cloud based datacenter environments
    • FabricServer extends the principles of DataSynapse’s market leading Grid computing platform:
      • Shared and dynamic infrastructure
      • Automated application packaging and deployment
      • Built in application resiliency and failover
    • And adds support for virtualization, utility and cloud computing for enterprise applications based on standard development platforms (e.g. JEE, Microsoft apps, etc..)
    • Benefits of using FabricServer:
      • Lowering application time to deploy for complex enterprise applications
      • Lowering infrastructure costs, through improved utilization of data center resources
      • Improving application performance against SLAs
      • Driving adoption of virtualization (e.g VMware) and external cloud models (e.g. EC2)
  3. FabricServer - Basics FabricServer Package Once FabricServer provides tools and templates required to build self-contained, runnable packages of applications and platforms Tools Self-Contained Packages Configuration Information Platforms Packaged Legacy FabricServer Run Anywhere FabricServer manages those packages and can activate on any runtime environment (physical, virtual, cloud) Clouds Virtual Physical Automated Deployment Service Repository Run-Time Broker Policy Engine Manage Runtime FabricServer allows production support teams to create policies for how applications will be managed at run time Closed Loop Policy-Based Allocation of Infrastructure
  4. Run-Time Architecture FabricServer Broker Failover Fabric Broker Shared Pool of FabricServer Hosts Daemon
    • Monitors host & spawns one or more engines
    • 1 per physical host)
    Engine
    • Manages application instances
    • Isolates applications on hosts
    • 1 or many per physical host
    Component
    • A application component instance
    • Multiple components = application
    • 1 per engine
    <> Engines are only started as needed VM VM VM Engines can be deployed to physical or virtual servers The entire stack of an enterprise app will typically be distributed across different engines
  5. Brokers and Engines
    • 100% server based Java Application
    • Runs on Windows, Solaris, HPUX, AIX and most Linux distros
    • Requires a standard J2SE
    DataSynapse Engine
    • Runs on Windows, Solaris, and most Linux distros
    • Started and managed by an agent that runs on the host called the Engine Daemon.
      • Daemon starts and stops engine instances based on Policy
      • Engine Daemon starts Engine instances, monitors them and restarts them if there are failures or reconfigurations
    • DataSynapse Engine:
      • Starts/stops/monitors applications in other processes
      • More than one engine instance can run per host
    Operations Dashboard Application Component and Library (with SDK) Policy Manager Auditing and Logging Allocation Engine Statistics Manager Real-time Systems Monitor Security Manager FabricServer Broker Host Engine Daemon Engine Instance <>
  6. FabricServer Tools
    • DataSynapse Studio:
    • An eclipse based UI for infrastructure architects to design and build application infrastructure templates
    • Key Features:
    • Graphical and command line tools simplify creating and updating FabricServer artifacts
    • Wizards and structured XML file editing ease the creation of components and configuration templates
    • Libraries can be easily compared and modified
    • Applications can be smoke tested within Studio before deploying to a full FabricServer environment
    • FabricServer UI:
    • A web application UI for production support personnel to manage and monitor a FabricServer environment
    • Key Features:
    • Create and activate policies and schedules
    • Monitor and manage all applications running on FabricServer
    • Manage utility environment and configuration
    • Diagnose, log, and configure complex systems
  7. Pre-Built Artifacts
    • Containers:
      • The controlling logic for the application server environment that configures, starts, monitors, and shuts down the processes.
      • SDK that enables you to create your own containers
    • Distributions:
      • The application component run-time “Golden Image” packaged as a single image
      • These images contain no DataSynapse code or modifications to the vendor package
    FabricServer Repository Distributions Containers Components … … SDK …
    • Components:
      • The app deployment artifacts, platform configuration, and runtime context required to run anywhere in a FabricServer environment
    • Applications:
      • Collection of components that make up an application, e.g. WAS Deployment manager, Cluster of managed servers, MQSeries
  8. Supported Containers
    • Supported Containers
      • Full production support for existing releases
      • New releases are shipped with core DataSynapse product release
      • Updates to ISV application are supported within 9 months
      • Licensed and charge as per standard price list
    • Shared Source Containers
      • “ Starting point” for developing a custom container
      • Source code shared in an online code repository
      • Updates and maintenance provided on SOW basis
      • No software license, no software license charge


Labels:

neverwinter nights 2 dedicated server

This program is used to copy the portion of the files needed to run a dedicated server to a new folder which you can upload to your server. A dedicated server is not used to play the game, but rather to host a networked game which is played by users with normal copies of the game. This folder must then be copied somehow to your server. The advantage is files that are needed by server are all moved for you, ignoring files that are only needed by a player, which results in a very small total file size. The actual files themselves are the exact same as those in your program directory, it merely copies them for you.

This process creates a very lightweight dedicated server install that is of use mostly if you have limited access to your server ( such as if it's remotely hosted). However, the actual dedicated server program itself is the same as the one we've had all along, so you can continue to use the setup that you have without any problems.

You will need to re-run the tool after each patch, to ensure that the dedicated server receives the same updates. The patcher only patches your actual install, and not rerunning can cause issues because of version differences.

VersionsEdit  href=

Original Version was Released 10 August 2007. It had issues where it did not copy all the files. Users could copy the missing files to the folder that was created after this program is run. An updated version that corrects this problem was released on 25 April 2008.

InstructionsEdit  href=


  • Run the "NWN2_DedicatedServerCreator.exe" that it contains on the machine with NWN2 installed on it.
  • It says upon startup "Would you like to be able to host games based on the NWN2 Original Campaign? Selecting no will save approximately 2.8GB from your install, but you will be unable to start new games based on the NWN2 Original Campaign."
Yes should be selected if you want to host the OC.
No if you have your own module or PW that you are going to host. ( Without OC or MOTB install size is 41.2 MB )
  • It says upon startup "Would you like to be able to host games based on the NWN2 Expansion: Mask of the Betrayer? Selecting no will save approximately 1.3GB from your install, but you will be unable to start new games based on the NWN2 Expansion: Mask of the Betrayer."
Yes should be selected if you want to host MOTB games.
Again select No if you have your own module or PW that you are going to host.


Labels:

1000 mbps port dedicated server

Okay, so I’m upgrading my dedicated server for a small game I host, a private server of course.

Right now these are my specs:

Memory 2 GB DDR2 667
Processor Single Processor Quad Core Opteron 1354 – 2.20GHz – 2 x 1MB cache
Operating System Windows Server 2003 Standard SP2 with R2 (64 bit)
VPN Management – Private Network SSL VPN Management
Uplink Port Speed 1000 Mbps Public & Private Networks

I asked my host how much of the 1000mbps power I get, and they replied I only get around 80% of that speed.

Okay so I wanna upgrade! I hate my host they’re so overpriced.

So I found this host here are the specs:

Dual Intel Xeon 3.06Ghz CPUs
4GB RAM, 160 GB SATA Drive
Unlimited Bandwidth [100MBit Port]

Okay the 100mbit port throws me off because my other host is 800mbps (80%). Which host would be better and no lag for my game? Currently I have no lag except when I reach around 440 players my server starts to lag I’m guessing it is the dedicated server or the port speed I do not know… but I need to upgrade!

So which dedicated server should I get and what is the differences between the two internet port speeds, 100mbit and 800mbps, which is faster?



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nevada search engine optimization

What is Search Engine OptimizationSearch engine optimization, or SEO for short, is the name given for a number of techniques used to improve a website’s ranking in organic search results. The crawler-generated listings that are returned in a search query can be affected through SEO, and we can help you improve your search engine ranking! USA SEO PROS will work with your business to research industry-specific key words that target your business and will drive visitors to your site.

Why is Search Engine Optimization important to our business?

What good is a website if it’s not being seen? Research has shown that as many as 90 percent of all sales on the internet originate from search engine results. Consumers are increasingly turning to sites like Google, Yahoo and MSN's Live Search to do their shopping and research. Google alone conducts 293 million searches per day! Recent studies have shown that consumers are about 12 times more likely to buy your products and services after finding your site through organic search engine results than all other methods of advertising. Why? Because when they perform a search for your business, using the key words used on your site, they are ready to buy. They are finding your site and your products at the moment of purchase - ready to buy! Search engine optimization will help place your business right in front of the consumer's eyes when they are ready to buy. Your competitors are already using SEO to improve their search engine rankings...don’t get left behind. Page one is where you want to be and USA SEO PROS can get you there!

Geo-targeted key phrases are the wave of the future

Yes, geographically targeted key words are the future of online marketing, but the future is now! You are probably already familiar with SEO and advertising programs like pay per click. The problem is that pay per click isn’t always trustworthy or effective. Consumers are getting smarter too. They know that the sponsored results that appear at the top of a search results page are paid advertising.


Labels:

arnewood class server

Top 4 Download periodically updates software information of arnewood class server full versions from the publishers, but some information may be slightly out-of-date.

STUDYWIZ


is Arnewood's Learning Platform or VLE. It is somewhere that staff can set homework and classwork activities for students, as well as making resources available to students. Students can hand in work to teachers using , as well as working in groups with other students on a piece of work. Parents can log on and see what homework has been set, as well as looking at the discussions and activities completed in class.

Here is a list of Quick Start Guides:

Using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for arnewood class server license key is illegal. Download links are directly from our mirrors or publisher's website, arnewood class server torrent files or shared files from free file sharing and free upload services, including Rapidshare, MegaUpload, YouSendIt, Letitbit, DropSend, MediaMax, LeapFile, MyOtherDrive or MediaFire, are not allowed!

Your computer will be at risk getting infected with spyware, adware, viruses, worms, trojan horses, dialers, etc while you are searching and browsing these illegal sites which distribute a so called keygen, key generator, pirate key, serial number, warez full version or crack for arnewood class server. These infections might corrupt your computer installation or breach your privacy. arnewood class server keygen or key generator might contain a trojan horse opening a backdoor on your computer.



Labels:

dedicated server hardware

Hardware requirements for servers vary, depending on the server application. Absolute CPU speed is not usually as critical to a server as it is to a desktop machine[citation needed]. Servers' duties to provide service to many users over a network lead to different requirements like fast network connections and high I/O throughput. Since servers are usually accessed over a network, they may run in headless mode without a monitor or input device. Processes that are not needed for the server's function are not used. Many servers do not have a graphical user interface (GUI) as it is unnecessary and consumes resources that could be allocated elsewhere. Similarly, audio andUSB interfaces may be omitted.

Servers often run for long periods without interruption and availability must often be very high, making hardware reliability and durability extremely important. Although servers can be built from commodity computer parts, mission-critical enterprise servers are ideally very fault tolerant and use specialized hardware with low failure rates in order to maximize uptime, for even a short-term failure can cost more than purchasing and installing the system. For example, it may take only a few minutes of down time at a national stock exchange to justify the expense of entirely replacing the system with something more reliable. Servers may incorporate faster, higher-capacity hard drives, larger computer fans or water cooling to help remove heat, anduninterruptible power supplies that ensure the servers continue to function in the event of a power failure. These components offer higher performance and reliability at a correspondingly higher price. Hardware redundancy—installing more than one instance of modules such aspower supplies and hard disks arranged so that if one fails another is automatically available—is widely used. ECC memory devices that detect and correct errors are used; non-ECC memory is more likely to cause data corruption.[citation needed]

To increase reliability, most of the servers use memory with error detection and correction, redundant disks, redundant power supplies and so on. Such components are also frequently hot swappable, allowing to replace them on the running server without shutting it down. To prevent overheating, servers often have more powerful fans. As servers are usually administered by qualified engineers, their operating systems are also more tuned for stability and performance than for user friendliness and ease of use, Linux taking noticeably larger percentage than for desktop computers.[citation needed]

As servers need stable power supply, good Internet access, increased security and are also noisy, it is usual to store them in dedicated server centers or special rooms. This requires to reduce power consumption as extra energy used generates more heat and the temperature in the room could exceed the acceptable limits. Normally server rooms are equipped with air conditioning devices. Server casings are usually flat and wide, adapted to store many devices next to each other in server rack. Unlike ordinary computers, servers usually can be configured, powered up and down or rebooted remotely, using out-of-band management.

Many servers take a long time for the hardware to start up and load the operating system. Servers often do extensive pre-boot memory testing and verification and startup of remote management services. The hard drive controllers then start up banks of drives sequentially, rather than all at once, so as not to overload the power supply with startup surges, and afterwards they initiate RAID system pre-checks for correct operation of redundancy. It is common for a machine to take several minutes to start up, but it may not need restarting for months or years.



Labels:

snap server recovery

Snap Server Recovery

We have worked with large and small businesses, government agencies, law enforcement and universities to restore Snap Server data across the nation. If you have already tried to rebuild your Snap Server, but still can't access your data, you should stop now. Failed Snap Server

Of the various types of Snap Server failures, these are the most common 'do-it-yourself' failures which most companies experience when attempting to restore a corrupted Snap Server array:

  • Forcing a rebuild.
    This will only increase the odds that your data loss is permanent. These types of Snap Server failures require specialized training, software and equipment.
  • Off the shelf recovery software.
    Even if you are using Snap Server utilities or recovery software, unless you are experienced with the nauances of a performing a Snap Server server data recovery and have sucessfully restored data or rebuilt arrays, these Snap Server repair software packages can potentially cause more damage.

To reduce the chances that your data is completely lost, you will need professional Snap Server recovery services. A Snap Server data recovery specialist should have thorough knowledge of Snap Server configurations, drive structures, MFT mount points, HEX, and offsets to avoid destroying data while attempting a recovery.

The safest thing you could do at this point is contact a Snap Server recovery specialist to have an image of the hard drive made, evaluate the damage and begin the process to recover data from the hard drive.



Labels:

telemarketing hardware

Questions About Marketing CharTec For Your Computer Business?

Friday, March 5th, 2010

Recently several of our computer consultants clients have question the benefit of HAAS with CharTec after adding up the cost of the financing. Below are my thoughts about why HAAS is critical to your marketing success as a computer business owner

How much will the average person pay for a car or home after the financing is added to the cost?

If every one cringed about the financing cost then our society’s spending would shrink and so would the economy. Like in Mexico where pretty much every one pays for homes and cars with cash and really only rich people buy anything.

Perhaps there could be an argument that that might be a better arrangement, it would also mean there would be less millionaires because there would be less cash blowing around for entrepreneurs to grab.



Labels:

crossftp server

CrossFTP Server is a secure enabled FTP Server for multiple platforms. It offers a high-performance, easy configurable, and most of all a secure enabled FTP server. Versatile GUI is provided for the novice users' start-up, and the advanced users' configuration as well.

Want the commercial support?

Here lists some of its main features:

Features

  1. Free, open-source FTP server.
  2. Multi platform support and multithreaded design.
  3. UTF-8 directory encoding for internationalization support.
  4. User virtual directory, write permission, idle time-out and upload/download bandwidth limitation support.
  5. You can monitor all the user activities.
  6. Anonymous login support.
  7. Both upload and download files are resumable.
  8. Handles both ASCII and binary data transfers.
  9. IP restriction support to allow/ban IPs.
  10. Database and LDAP can be used to store user data.
  11. All the FTP messages are customizable.
  12. Implicit/explicit SSL/TLS support.
  13. MDTM support - your users can query the date-time stamp of files.
  14. "MODE Z" support for faster data upload/download.
  15. Easy installation/update by Java Web Start technology.
  16. Bonjour discovery protocol support.


Labels:

virtual machine hardware

n computing, hardware-assisted virtualization is a platform virtualization approach that enables efficient full virtualization using help from hardware capabilities, primarily from the host processors. Full virtualization is used to simulate a complete hardware environment, or virtual machine, in which an unmodified guest operating system (using the same instruction set as the host machine) executes in complete isolation. Hardware-assisted virtualization was added to x86 processors (Intel VT-x or AMD-V) in 2006.

Hardware-assisted virtualization is also known as accelerated virtualization; Xen calls it hardware virtual machine (HVM), Virtual Ironcalls it native virtualization.

Contents

[hide]

[edit]History

Hardware-assisted virtualization was first introduced on the IBM System/370 in 1972, for use with VM/370, the first virtual machine operating system. Virtualization was eclipsed in the late 1970s, with the advent of minicomputers that allowed for efficient timesharing, and later with the commoditization of microcomputers.

The proliferation of x86 servers rekindled interest in virtualization. The primary driver was the potential for server consolidation: virtualization allowed a single server to replace multiple underutilized dedicated servers.

However, the x86 architecture did not meet the Popek and Goldberg virtualization requirements to achieve “classical virtualization″:

  • equivalence: a program running under the virtual machine monitor(VMM) should exhibit a behavior essentially identical to that demonstrated when running on an equivalent machine directly;
  • resource control (also called safety): the VMM must be in complete control of the virtualized resources;
  • efficiency: a statistically dominant fraction of machine instructions must be executed without VMM intervention.

This made it difficult to implement a virtual machine monitor for this type of processor. Specific limitations included the inability to trap on some privileged instructions.

To compensate for these architectural limitations, virtualization of the x86 architecture has been accomplished through two methods: full virtualization or paravirtualization.[1] Both create the illusion of physical hardware to achieve the goal of operating system independence from the hardware but present some trade-offs in performance and complexity.

Paravirtualization has primarily been used for university research - Denali or Xen.[dubious ][citation needed] The research projects employ this technique to run modified versions of operating systems, for which source code is readily available (such as Linux and FreeBSD). A paravirtualized virtual machine provides a special API requiring substantial OS modifications. The best known commercial implementations of paravirtualization are modified Linux kernels from XenSource and GNU/Linux distributors.

Full virtualization was implemented in first-generation x86 VMMs. It relies on binary translation to trap and virtualize the execution of certain sensitive, non-virtualizable instructions. With this approach, critical instructions are discovered (statically or dynamically at run-time) and replaced with traps into the VMM to be emulated in software. Binary translation can incur a large performance overhead in comparison to a virtual machine running on natively virtualized architectures such as the IBM System/370. VirtualBox and VMware Workstation (for 32-bit guests only), as well as Microsoft Virtual PC, are well-known commercial implementations of full virtualization.

With hardware-assisted virtualization, the VMM can efficiently virtualize the entire x86 instruction set by handling these sensitive instructions using a classic trap-and-emulate model in hardware, as opposed to software.

Intel and AMD came with distinct implementations of hardware-assisted x86 virtualization, Intel VT-x and AMD-V, respectively. On theItanium architecture, hardware-assisted virtualization is known as VT-i.

Well-known implementations of hardware-assisted x86 virtualization include VMware Workstation (for 64-bit guests only), Xen 3.x (including derivatives like Virtual Iron), Linux KVM and Microsoft Hyper-V.



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