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Wednesday, March 28, 2012

Firefox vs Chrome vs Internet Explorer

One of the tech industry's fiercest arguments for the last 15 years has been which Web browser rules the desktop. Now the pitch of the browser argument is getting louder — and more vendors are piping up — as the browser battle migrates from desktops to smartphones.
Browser that launched an industry turns 15 
Netscape Navigator, the first popular browser, launched the Internet industry in October 1994 by allowing average users to view text and images posted on Web sites. Less than a year later, Microsoft entered the fray by bundling the free Internet Explorer browser into its Windows operating system. Within two years, Microsoft was the leading browser manufacturer, and Netscape was on the decline, prompting anti-trust investigations in the United States and Europe.
The browser market was shaken up again in 2004, when Netscape's browser was reborn as open software called Firefox, which is distributed by the Mozilla. Firefox continues to be a favorite among tech-savvy users because of its speed, and it remains the toughest competitor that Microsoft faces in the browser arena. Firefox 4, due for release in 2010, will feature performance enhancements designed to make it even speedier.
A third contender joined the browser argument in 2008, when Google introduced its open source Chrome browser. The latest version is Chrome 5.0, which was released as beta code in May 2010. Chrome 5.0 competes against Internet Explorer in the speed department and supports emerging standards such as HTML5.
IE8, the current version of Internet Explorer, is considered to be the best browser when it comes to thwarting malware, according to a March 2010 report. But IE8's anti-malware feature also introduces some security risks that will be patched in June 2010. A preview of IE9 was released in May 2010, but the software isn't due out until 2011.
As of April 2010, Internet Explorer retained 60% of overall browser market share, followed by 25% for Firefox and 7% for Chrome, according to
Which vendor will win the browser argument? Perhaps, it will be none of these vendors because today's best-selling smartphones use alternative browsers. Symbian devices from Nokia and others typically use their own browsers or an alternative from Opera Software. The iPhone uses Apple's own Safari browser. Google's Android operating system for mobile devices has its own browser with Adobe Flash 10.1 support. And RIM's BlackBerry has a new-and-improved browser that stems from its acquisition of Torch Mobile.
With all these new entrants into the market, the browser argument is likely to remain just as fierce and just as loud in the future.

Authors networkworld

Thursday, March 22, 2012

Cloud Server vs Dedicated Server

The time for traditional dedicated server has passed. New revolutionary server virtualization and cloud computing technologies deliver Cloud Servers that perform and behave exactly like a dedicated server. However, cloud servers are more reliable, scalable, offer more management features, and simply clost less. Not all cloud service providers offer the same type of cloud servers as vServer Center's cloud servers. vServer Center is well known for its cloud servers' high performance, super reliable design, and rich features. The following chart contains 16 feature to feature comparisons of vServer Center's Enterprise Class cloud servers with majority of dedicated servers on the market today.
Cloud Servers Dedicated Servers
Operating System Dedicated Operating System;
Support dozens of operating systems
Dedicated Operating System;
New hardware may not work well with old operating systems and device drivers.
Software Applications Server owners can remotely install and manage any compatible software application Server owners can remotely install and manage any compatible software application
Administrative Access Root access for Unix Servers. Administrative access for Windows Servers Root access for Unix Servers. Administrative access for Windows Servers
Remote OS Install Yes No
Remote OS Reinstall Yes No
Remote Server Console Access Yes No
Remote Reboot a freezing Server Yes No
Server Snapshots You can take a server snapshot first, then make changes to the server. If unexpected things happen after the change, a simple click of revert snapshot will get your server back to the original state. No snapshot feature.
Server Performance Perform better than low end or average dedicated servers.
See VMware Performance Benchmarks test scores.
High end expensive dedicated servers perform better than most cloud servers.
Data redundancy Dual parity disks (RAID 6) plus two hot standby disks Lots of dedicated servers are on a single disk. Some dedicated servers are on a single parity disk (RAID 5) with no hot standby disk.
Server redundancy If a physical server fails, HA enabled cloud servers will be automatically switched to other live physical servers. If a dedicated server fails, you will need to build a new server, reinstall OS, and restore data from backups.
Power redundancy Cloud servers run on a computing resource pool which is served by redundant power PDUs, redundant power UPSes, redundant power generators, and redundant power grids (not all data centers were built this way). Most dedicated servers have a single power supply. Some dedicated servers have dual power supplies but they are on a single power PDU.
Hardware resource scaling Can add CPU power and disk space while the server is running. Have to shutdown the dedicated server and causing downtime when upgrading CPU or disk space.
Hardware upgrade When upgrade to a newer more powerful server, no need to reinstall OS or devices drivers. The same cloud server can run on different hardware. When upgrade to a newer more powerful server, need to reinstall OS and device drivers.
Disaster Recovery If your cloud server fails and is unrecoverable, you can simply power on the cloud server backup image. Your cloud server will be back and running in a few minutes. If your dedicated server fails and is unrecoverable, you will need to reinstall OS, restore files and databases from backups which can take many hours.
Costs $29/month to $199/month. $99/month to $1500/month.