Posts Tagged ‘linux’
How to: Install Citrix XenServer
Let’s talk about something a little more technical: Xen virtualization. when you mention virtualization, most people immediately think of the type many Linux distros utilize. Well, properly setting up these Xen versions can be tricky. There are fewer problems, however, with Citrix XenServer, mostly because it has a very accessible management interface. It’s free, too, which is nice.
There are three different versions of Citrix XenServer; the Enterprise Version, the Standard Version and the Express Version. of these XenServer versions, the Express Version can be used for free. There are some limitations though; the most important of which being that XenServer Express offers virtualization for one server only. that is you can install more than one server with XenServer Express, but there is support for only one server in the XenCenter management application. Nevertheless, it offers an excellent way to get familiar with the Xen way of doing things.
Getting it
Getting Citrix XenServer Express is easy; it’s a free download from Citrix . if you plan to install virtualized Linux machines as well, don’t forget to download the XenSource Linux support cd image. otherwise, you won’t be able to virtualize Linux.
Once the XenSource installation cd is burned, installing the product itself is easy. Boot from the cd and all the work is done automatically. the installation program asks if you want to install a XenServer host or if you want to convert a physical machine to a virtual machine (VM). the latter is pretty cool since no open source Xen version offers an easy physical to virtual (P2V) solution.
The XenServer installation cd offers you the option to install a XenServer host and an easy way of doing P2V conversion.
The installation process itself is pretty straightforward and looks a lot like the Red Hat Linux installation program. But there is one thing that you should always remember: to install Windows virtual hosts, you do need hardware support for virtualization. if you don’t, then the installation program warns you that you can install Linux virtual hosts only. of course, when Windows Server 2008 becomes available this will change since you can install it in paravirtualized mode.
Managing Virtual Machines
Once installed you can get familiar with the reason why you should have a look at Citrix XenServer: the XenCenter management application. sorry if you like to use a Linux workstation because this application is available for Windows only. you can install it with the XenCenter client install program that is available on the XenServer installation cd.
XenCenter offers the easy accessible XenServer management interface.
The first step in XenCenter is to add your server. Once you’re connected to your XenServer hosts, you’ll find that some prerequisites have to be met before you can continue. First, you need to configure storage. XenServer assumes that you’re connected to an SAN so you need to indicate what SAN access protocol to use. Local storage can be used, but it’s complicated to set up. also, the installation of your favorite operating system isn’t always easy.
When installing Linux, the installer assumes that you’re using an installation server.
You can install Windows from a local cd or dvd but if you want to install Linux, you must refer to a URL on an installation server. In future articles you will learn how to perform these tasks.
Advantage of Linux VPS Hosting Over Windows VPS Hosting
If you’re planning to host a website, VPS hosting is the best way to do it since the cost is low when compared to other servers like Windows Virtual private server servers or dedicated servers. It also provides better authorization. Linux VPS hosting is open source software and it provides the same advantage as provided in the Windows based Virtual private server hosting.
If you choose Virtual private server hosting, you can have your set up and controls at low cost. You can also run your own operating system and install any software you need in the server. It is a secured one and you need not have any worries about losing your data. If you’re not comfortable with shared hosting, you can shift to Virtual private server hosting. The Hosting server offers the best dedicated servers contrary to a main server partitioned into many.
Most people are familiar with Windows hosting since it came first to the market and administrators are familiar with the Windows process. Windows based hosting is used for huge websites or complicated applications which can be run easily and provides customized set up. The biggest advantage that Linux hosting has over Windows Virtual private server hosting is its open source software and since there is no license for software, it reduces the cost by a huge margin. If you’re going with windows VPS hosting, you have to pay fees to buy license from Microsoft. The price factor is the biggest reason why many prefer Linux Hosting.
Windows programmers prefer working with Windows hosting because few Windows programs may not work well in a Linux system. Internet hackers target websites with their viruses and malicious software and Microsoft gets caught into it. meanwhile, Linux doesn’t have virus issues because of its free and open source nature. both Windows and Linux VPS hosting are good but make sure that you have the right tools in place to install all the software and run the operating system perfectly.
In case you have problems with re-installing your operating system with Linux, there are a number of ways to rectify it. The Linux VPS hosting is also provided with limited bandwidth and space for free but you can increase the size later based on your requirement at less cost. However, it is to be noted that in shared hosting, the bandwidth and space are unlimited.
The up time will be good in Linux VPS hosting compared with Windows Virtual private server hosting because of it being an open source. You can make modification in coding which will take up less space compared to Windows Virtual private server Program. But if you desire to obtain remote desktop access it is better to opt for Windows.
You can save plenty of money in Linux VPS hosting compared to Windows VPS hosting because of the cost and because it is efficient and easy to handle.
How do i test the RAM in my computer?
My computer is periodically restarting… I have posted several other questions related to this so please see them for more info. thanks.
put memtest on a boot floppy and run it in dos
Get Memtest86 (http://www.memtest86.com/)
On their site they should have dos boot disks and boot cds for download. A lot of Linux Distributions also have it built in on boot.
Memtest:
http://hcidesign.com/memtest/
Im a computer technician and test about 12+ sticks different varients of ram each day. The program I use is this:
Windows Memory Diagnostic, available from microsoft's website: http://oca.microsoft.com/en/mtinst.exe
1. Go to the directory where you saved the Windows Memory Diagnostic executable file, mtinst.exe.
2.Double-click mtinst.exe to start Windows Memory Diagnostic Setup. Depending on your security settings, the File Download dialog box might appear when you run mtinst.exe. If it appears, click Open to start Windows Memory Diagnostic Setup. Other security dialog boxes might also appear. this can happen, for example, if you try to install Windows Memory Diagnostic from a Universal Naming Convention (UNC) shared folder. these dialog boxes are related to your security settings and not to Windows Memory Diagnostic. If you experience problems when you are trying to install Windows Memory Diagnostic, either be sure to run Mtinst.exe from your local computer, or review your security settings and the documentation included in your version of Windows.
3.Do either of the following:
Click create Startup Disk to install Windows Memory Diagnostic on a floppy disk.
Select the floppy disk drive that you want to use from the list provided.
Insert a formatted floppy disk into this drive and then click create. When the installation is complete, the Success dialog box will appear.
Or, click Save CD Image to Disk if you want to create a CD-ROM that you can use to start your computer.
Select a location where you want to save the International Organization for Standardization (ISO) 9660 image and then click Save. When the file has been saved, the Success dialog box will appear.
For more information about creating a CD-ROM that you can boot from, see the Note at the end of this section.
4. Restart your computer with the disk on which you installed Windows Memory Diagnostic (either the floppy or CD-ROM drive).
Important
In the boot sequence, the drive with the Windows Memory Diagnostic disk must precede any other devices on which there is a bootable program, such as a hard disk on which Windows is installed. you can configure the boot sequence in the BIOS settings. On most computers, the default boot sequence includes the floppy drive. For more information about configuring the boot sequence, see the documentation for your motherboard.
you better get to know whether your motherboard supports the ram that you get,if it does just get a ram from someone you know and try it.if it works then problem is that your is broken
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