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  • Is it a very bad idea to create disk image of mounted disk?

    - by Maciek Sawicki
    I would like to backup my server. For example using dd: dd if=/dev/md0 of=/some_network_share I wonder if this image will be vary inconsistent if /dev/md0 is mounted? Would it be possible to convert such dd image to vdi drive and create working virtual machine? Using this command for example: VBoxManage convertfromraw ImageFile.dd OutputFile.vdi Network traffic is disabled on firewall (there is only connection to/from one remote machine where image is copied).

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  • Ubuntu 10.04 Windows2003 adding a route for GPO assignment

    - by David Carvalho
    I want the PC's that receive IP from my Ubuntu DHCP3-server to be able to retrieve the GPOs that are on my windows 2003 server. I'm using virtualbox and 3 virtual machines: 1 windows 2003 server 192.168.0.2 with 1 NIC (internal network). 1 ubuntu server 10.04 lts 192.168.0.1 with 1 NIC (internal network) and 3 aliases 192.168.21.0, 192.168.22.0, 192.168.100.0 1 Windows XP machine with 3 NIC's (internal network).

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  • Has anyone managed to virtualise Windows 7 on a physical disk?

    - by Stavros
    I have Windows 7 installed on a partition and running fine, but I want to access them from my Ubuntu installation with VirtualBox. I have created the virtual disk file and everything, but Windows bluescreens after a bit of loading with error 0000007B (it can't find the disk or something). Has anyone managed to solve this problem?

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  • how to install Wimax Dongle over Ubuntu?

    - by Mosh
    i have Asus Wimax Dongle and it has an Independence software from the Asus company requires user name and password and its running will over windows 7 now i've tried ubuntu 10.10 but nothing happens when i plug the dongle into usb. in windows if you plugs it for the first time, an application wizard begins and you can find a virtual cd in my computer but i cant find it in Ubuntu now i would install it over ubuntu, how? toast for all

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  • How should I use my new SSD drive?

    - by jasondavis
    I just built a new PC the other day. Specs... Processor: Intel i7-930 quad core CPU CPU Cooler: COOLER MASTER Hyper 212 Motherboard: AsRock X58 Extreme 3 RAM/Memory: 6gb G-Skill tripple channel DDR3 memory (3 sticks of 2gb planning to get another kit to make it 12gb total soon) Operating System Hard drive: Intel X25-M 80GB Mainstream SATA2 Solid State Drive Video Cards: 2 XFX ATI Redeon HD 4650 cards to run 3-4 monitors Case: Lian Li PC-B10 Midtower case Power Supply: Antec TruePower New TP-750 Blue 750W Operating System Windows 7 Pro 64bit Not sure if the specs are helpful at all but I posted them just in case. So I got everything put together and running great so far but I need some advice/ideas/help/tips. I got the SSD drive in hopes of using it strictly for my windows 7 install along with all my other programs I install. I am then going to get another drive or 2 just for data (video,music,photos, etc). So my plan is to just install the new data drives and then in windows 7 I will change my "My documents" "My Music" "My Video" "MY Photos" library's to be located on the data drives instead of the OS SSD drive. I would ultimately like to install all my programs with my windows install on the SSD drive and then create an IMAGE of the drive and then 6 months down the road if things are sluggish I can just wipe the drive and restore my IMAGE with all my programs and settings in tact still. So here are some questions now. 1) How can I verify that TRIM is working on my new SSD? 2) Is there anything above that I missed that I should be doing? I think I once read that there is a page file or some sort of file that windows changes a lot and that it should be moved off f an SSD an onto my data drives. DOes anyone know what I might of heard? If you do can you explain the pros and cons of doing such a thing as well as how to possibly? 3) Any tips or advice to get the best performance from all this, I built a pretty nice system and I just want to make it stay that way as long as I can.

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  • How to get the best LINPACK result and conquer the Top500?

    - by knweiss
    Given a large Linux HPC cluster with hundreds/thousands of nodes. What are your best practices to get the best possible LINPACK benchmark (HPL) result to submit for the Top500 supercomputer list? To give you an idea what kind of answers I would appreciate here are some sub-questions (with links): How to you tune the parameters (N, NB, P, Q, memory-alignment, etc) for the HPL.dat file (without spending too much time trying each possible permutation - esp with large problem sizes N)? Are there any Top500 submission rules to be aware of? What is allowed, what isn't? Which MPI product, which version? Does it make a difference? Any special host order in your MPI machine file? Do you use CPU pinning? How to you configure your interconnect? Which interconnect? Which BLAS package do you use for which CPU model? (Intel MKL, AMD ACML, GotoBLAS2, etc.) How do you prepare for the big run (on all nodes)? Start with small runs on a subset of nodes and then scale up? Is it really necessary to run LINPACK with a big run on all of the nodes (or is extrapolation allowed)? How do you optimize for the latest Intel/AMD CPUs? Hyperthreading? NUMA? Is it worth it to recompile the software stack or do you use precompiled binaries? Which settings? Which compiler optimizations, which compiler? (What about profile-based compilation?) How to get the best result given only a limited amount of time to do the benchmark run? (You can block a huge cluster forever) How do you prepare the individual nodes (stopping system daemons, freeing memory, etc)? How do you deal with hardware faults (ruining a huge run)? Are there any must-read documents or websites about this topic? E.g. I would love to hear about some background stories of some of the current Top500 systems and how they did their LINPACK benchmark. I deliberately don't want to mention concrete hardware details or discuss hardware recommendations because I don't want to limit the answers. However, feel free to mention hints e.g. for specific CPU models.

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  • whats the difference between GPU and framegrabber?

    - by user261002
    I am working on a project to monitor if human tissue has been fused with radio frequency during the surgery or not, therefore we are using a very fast camera (1800fps) and also laser illumination on the tissue and a framegrabber (1GB memory). I notice that, instead of a framegrabber, I'm able to use GPU as well, but I am not sure on what's the difference between them? Can any body explain what is the difference between a frame grabber and a GPU?

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  • Assign a secondary IP address to a Windows machine using DHCP

    - by IndigoFire
    Is it possible to configure dhcpd (on a Linux box) to assign a Windows PC 2 separate IP configurations? Right now I've configured the two IP addresses manually and it does exactly what's needed, but I can't figure out how to achieve the same thing with DHCP. For example, is it possible to set up a virtual interface that piggy-backs onto the first interface and gets its own configuration? Alternatively, is it possible to run a script upon getting IP values from DHCP that would then be able to configure the secondary IP?

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  • Laptop will boot to some usb flash drives but not others.

    - by evolvd
    Laptop: HP Compaq 6710b I can boot from usb just fine with the following usb flash drives: Cruzer micro 4GB HP 4GB The flash drive that will not boot: Flash Voyager 8GB To knock out variables I did the following: Using Hard Disk Low Level Format Tool I performed a low level format Full erase with Flash Memory Tookit In windows 7 I formated the drive to fat32 Used USB-Boot-Tester to write to the drive Also used uNetbooting with various distros to see if that would make a difference My guesses on what could be preventing the drive from booting: The laptop does not support booting to usb flash drives larger than 4GB The drive is defective in some way

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  • Real performance gain from faster IDE or SATA hard drive?

    - by raw_noob
    How much of a real-world performance gain would you expect from: replacing a 5400rpm IDE HD with a 7200rpm IDE HD? replacing a 5400rpm IDE HD with a SATA-150? It's assumed that the drive in question is both the system drive and the only drive. A modest AMD Sempron-based home computer with adequate DDR memory running Windows XP Home SP3. Thanks for looking.

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  • Checking if my PC working correctly

    - by aiacet
    hello to everyone and thanks in advance to all the spuer-users than will aswering to my question.Can you suggest me an utility, software or program than can check if my PC is well configured?That can check if communication between all the components works correctly?that can indicate to me if the OS work properly?That can check if ram and memory paging is configured correctly? Waiting for your gentle answers, best regards Ajax

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  • Redirect Root Directory to Subdirectory using mod_rewrite

    - by manyxcxi
    I am trying to redirect /folder to / using .htaccess but all am I getting is the Apache HTTP Server Test Page. My root directory looks like this: / .htaccess -/folder -/folder2 -/folder3 My .htaccess looks like this: RewriteEngine On RewriteCond %{REQUEST_URI} !^/folder/ RewriteRule (.*) /folder/$1 What am I doing wrong? I checked my httpd.conf (I'm running Centos) and the mod_rewrite library is being loaded. As a side note, my server is not a www server, it's simply a virtual machine so it's hostname is centosvm.

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  • Windows 64bit Sandboxing software alternatives

    - by Pacifika
    As you might know sandboxing software doesn't work in 64bit Windows due to patchguard. What are the alternatives for a person looking to test untrusted / temporary software? Edit: @Nick I'd prefer an alternative to VMs as I'm not happy with the extended startup time, the extra login sequences and the memory overhead that accompanies booting a VM solution to test something out ocassionally as a home user. Also it's another system that needs to be kept secure and up to date.

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  • Is it possible to dedicate the physical screen of a vmware server machine to a guest vm graphically?

    - by matnagel
    I have a vmware server 2.x running on ubuntu server (8.04). So the graphics card and the screen of the physical box are unused (I log in remotely and the host os has only the cli console installed). I wonder if it is possible to assign this graphics card to a virtual machine directly and use it for the gui of this guest? Or maybe if I add a second graphics card to the machine?

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  • How to process requests twice in Apache

    - by Pieter
    In order to perform realistic tests for a new backend server, I'd like to process all Apache requests twice. So simply handle all the live requests with the old server, as it's done right now, but then also 'duplicate' the requests to a different virtual host, where the new backend is deployed, which will process the request and log the response. What's the best / most simple way to achieve this in Apache? (the backend is a FastCGI process)

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  • Windows Server 2003 Standard R2 CD 1 cannot boot: freeze at No Emulation

    - by TGP1994
    Hi everyone. I've been interested in the Windows Server line of OSes, so since I apply for DreamSpark, I thought I'd go download it and try it. I just so happened to have an old desktop that I was using awhile ago for Windows XP, so I imaged the drive in preparation for it to be overwritten with the new OS. (This system has an Asus A7V8X-X motherboard, an AMD Athlon XP 2800+ processor, and 1GB of RAM.) I tried burning the first disk image on my newer desktop computer, running Windows XP, although the CD burner consistently failed at a particular track area from cd to cd, so it seemed like the burner was toast there. Fortunately, I had a laptop, so I transferred the images over to that, then burned the first disc there. First time around went great, and the burning program reported no errors. I then took the CD over to the computer that I was intending to install Server onto, set the BIOS to boot from the CD drive, then I booted it up. Like normal, after the POST, it printed "Boot from ATAPI CD-Rom: No Emulation", which I was used to seeing with bootable cds. I waited for the "Press any key to continue..." message that I had become so familiar with in windows discs, although I saw none. The computer sat there for about 5 seconds with the cd spinning, then it spun down like it was done reading it. Nothing else happened. No response from the keyboard. I tried again, same result. I then downloaded IMGBurn, and I put the burned cd into the laptop that burned it originally. I also downloaded a fresh image from the dreamspark site. I ran a verify session, and everything checked out. I later tried getting various DOS startup discs, then I tried booting the winnt binary, which supposedly initiates the installation process. Either the shells reported that not enough memory was available (since they would be running in low memory mode), or FreeDOS in particular would report Illegal instructions right away. Is the image corrupt at dreamspark, or am I doing something wrong?

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  • Is there a system monitoring tool that lets me write complex queries against the data?

    - by benhsu
    I am looking for a system stat collection tool that will let me write queries against the data collected. I am planning to answer questions like: what is the average load, over the last 30 days, on this machine between 9AM and 5PM, as opposed to at night what was the average disk io on these 10 machines yesterday what was the average daytime memory usage on these 10 machines last week, as opposed to 2 weeks ago Has anyone done this with, say, collectd or graphite?

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  • Server Hardware on the Desktop

    - by jcnnghm
    When I rebuild my desktop, I'm thinking of using server hardware instead of desktop hardware. I want to do this so I can easily add a lot of ECC memory (~20GB), and possibly more than one processor. I know that video hardware could be a problem, especially because I use 4 monitors. I should be fine with this, as long as I have two pci-e channels. Are there any downsides to doing this? Anything I'm not seeing?

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  • How long will it take to create an OS backup image?

    - by user23950
    How much time will it take to backup 49GB? Here are the details: Windows 7 Dual core CPU 2.50 GHz 2GB memory I'll use the free version of Macrium Reflect. I will back it up to a Seagate portable hard-drive. I have installed: Microsoft Visual Studio 2008, NetBeans, and some CS4 Master Collection products. I only need to backup one partition.

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  • Looking for Ubuntu 10.10 driver for GeForce GT 425M GPU.

    - by Fantomas
    It came with my Sony VAIO® VPCF133FX/H 16.4" Notebook. Ubuntu does suggest an NVIDIA driver for me, but when I install it, I cannot boot back in normally. I have to boot into a failsafe mode, then reset graphics setting to default, and reboot again. Right now I am stuck in 800 x 600 mode, but I would like to do better, and take advantage of my 1GB graphics memory :(. Please let me know if you have questions.

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  • Windows Server not installing audio drivers properly

    - by user34322
    I am trying to install a dummy sound card on a Windows Server machine (in Amazon EC2 cloud) in order for one of my application to work. I'm trying to accomplish that with Virtual Audio Cable and REAUDIO3. Both tools managed to install a new device on my Windows XP machine, but on Windows Server, no new devices appear. Windows Audio and Plug and Play services are Started and Automatic. ANY ideas are greatly appreciated.

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