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• How to hot-add a vCPU to a virtual SQL Server

  One of the benefits of running SQL on virtual environment is the capability to present additional vCPUs to the virtual server online and real-time without interruption to running processes. Our VM administrator normally presents only 1 vCPU on the virtual server and extends as required. This article describes how SQL Server is able to detect hot-added vCPUs in my virtual server. New! SQL Prompt 6 – now with tab historyWriting, exploring, and editing SQL just became even more effortless with SQL Prompt 6. Download a free trial.

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• Growing your VirtualBox Virtual Disk

  - by Fat Bloke

  Don't you just hate it when this happens: Fortunately, if you're running inside VirtualBox, you can resize your virtual disk and magically make your guest have a bigger disk very easily. There are 2 steps to doing this... 1. Resize the virtual disk Use the VBoxManage command line tool to extend the size of the Virtual Disk, specifying the path to the disk and the size in MB: VBoxManage modifyhd <uuid>|<filename> [--type normal|writethrough|immutable|shareable| readonly|multiattach] [--autoreset on|off] [--compact] [--resize <megabytes>|--resizebyte <bytes>]   If you booted up your guest at this point, the extra space is seen as an unformatted area on the disk, like this: So we now need to tell the guest about the extra space available. 2. Extend the guest's partition to use the extra space How you do this step depends on you guest OS type and the tools you have available. Linux guests often include the excellent gparted partition editor, whereas Windows 7 and 8 provide the Computer Management tool which can resize partitions. Unfortunately, my Windows XP vm has no such tool. But I do have a couple of other options: Most Linux installable .isos include the aforementioned gparted tool, so I could simply attach, say, an Ubuntu.iso as a Virtual CD/DVD in my Windows XP vm and boot off that. Then use gparted to extend the Windows XP partition, before finally rebooting. But I took another route and attached my resized virtual disk to a Windows Server 2012 vm I had lying around. Then I used the Computer Management tool in Windows Server 2012 to extend the partition of the Windows XP disk, before shutting down, unplugging the disk and reattaching to my Windows XP vm. (Note that if your vm's use different disk controllers, Windows will check the disks on booting). When I finally boot up my Windows XP guest I see the available disk space and all is well. At least until the next time - FB 

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• Virtual Earth Shape Rendering Performance

  - by Mike

  I am overlaying a transparent image on my VEMap control by rendering it as a single VEShape. The shape changes sizes dynamically depeding on the zoom level of my map and can be as large as 4000*4000px. In older browsers such as IE6 and early versions of Firefox 2.x, map control performance degrades rapidly when my shape gets larger than 1500*1500px. The mouse pointer moves slowly and the map responds very slowly to events. I don't see this issue at all in newer browsers (IE7+). Are there any workarounds to boost performance of rendering a large shape for IE6 users?

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• cannot get ip address on a virtual machine

  - by user175084

  so i have a code which gets me the ip address of a machine i am wroking on. so if my gui is published on the server and i access it from my local machine it gives me tha address of my local machine and when i access the gui from the server itself it gives me the server address.. which is fine. But when i put the gui on a VM server and run it from a VM server itself i dont get the ip address. this works fine if i access it from another machine but does not work only when accesing gui on VM server.. please help me out as i get this value ":::1" here is my code: string ipaddress; //string ipaddress = Request.ServerVariables["LOCAL_ADDR"]; string ipaddress = Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (ipaddress == "" || ipaddress == null) string ipaddress = Request.ServerVariables["REMOTE_ADDR"]; Label5.Text = ipaddress; thank you

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• Virtual-machine running from DVD ?

  - by umanga

  Greetings all, I have this application which uses Tomcat and PostgreSQL (only involve database reads, no writes). I need to make this application runnable from a DVD.(target platform is Windows). So I was thinking to do these: 1) In a VirtualMachine (i prefer virtualbox) install lightweight linux distro. 2) Install Tomcat and Postgre, 3) Write virtualmachine into DVD which loads above virtualmachine image automatically when executed. But I am not quite sure whether I can do step 3.Or is it possible ? Any tips?

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• Real server, Multiple IP Addresses, HyperV Virtual Server, How to partition IPs across real and Virtual NICs

  - by Steven_W

  This is a slightly difficult problem to explain without same basic background information - I'll try and refine the question later as necessary Originally, I have a single hosted server (Win 2008R2) with the following range of 8 IP addresses. - Single NIC - IP: x.x.128.72 -> x.x.128.79 - Subnet: x.x.255.192 - GW: x.x.128.65 After installing Hyper-V and setting up a single virtual server on the same box, I then wanted to assign one of the IP addresses to the virtual server, leaving everything else running normally. -- Firstly, I tried using the "External" network, but (even after setting IPs on the "Virtual Adapter" similar to Here but struggled to get networking running at all. I needed to keep the server running (otherwise I would have spent more time pursuing this approach) Q1 ... Was this a sensible thing to do ? Should I have carried on down this route ? -- I then decided to try different approach - Set the HyperV network to "Internal" (visible to Management OS) - Physical NIC - IP: x.x.128.72 -> x.x.128.75 - Subnet: x.x.255.192 - GW: x.x.128.65 - Virtual NIC - IP: x.x.128.78 - Subnet: x.x.255.252 - GW: x.x.128.72 ... { The same as the IP of the physical NIC ) - Virtual OS-NIC - IP: x.x.128.77 - Subnet: x.x.255.252 - GW: x.x.128.78 ... { The same as the IP of the host virtual-NIC ) -- Surprisingly enough, this approach actually worked, and I was able to connect from all the following: - Internet to/from physical NIC (x.x.128.72) - physical NIC (x.x.128.72) to virtual-OS-NIC (x.x.128.77) e.g. testing via ping + FTP - Internet to/from virtual-OS-NIC (x.x.128.72) -- The problem I have is that this approach seems to only last for a short while (a few hours). After this time, it seems that I lose the ability to connect from Virtual-OS-NIC to/from the internet (but I can still connect from the host-OS to the virtual-OS and from the host-OS to the internet) I have re-tested this a couple of times with the same results ... I leave the server on for a few hours (e.g. overnight), and when I come back in the morning, the Virtual-OS loses the ability to route to the internet -- I'm not quite sure what to look at next (or whether I'm going about this completely the wrong way ) One "possible relevant item" is that the host-OS is also running RRAS (Routing and Remote Access), but this is only to run a simple VPN -- Q2 - Wheat should I be looking at next ? (Any good references / recommendations of what to try) Would appreciate any thoughts or comments (even if you tell me I'm going about this the wrong way)

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• Is it possible to limit how much CPU a virtual machine can use with VMWare Player?

  - by Raz

  Is it possible to limit how much CPU a virtual machine can use with VMWare Player? I use VMWare to run a Windows XP virtual machine. I want to keep it on in the background all the time. The real computer runs Windows 7 and is sometimes a little bit short of memory. That's why I want to check if I can throttle the VM down to the bare minimum to keep it running in the background constantly without interfering too much.

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• How to stream sound from an esx virtual machine ?

  - by Adrien

  Hi, I try to play sound from my monitoring application, which is an xp virtual machine on VMware ESX 3, on a physical machine with a real sound card, but I can not add from the ESX console sound card. Currently, I transmit sound with opening an RDP session and play it in this session. I would like to play sound without openning RDP session, do you have a solution to add a virtual sound card and then stream it with vlc?

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• How to activate the Virtual Desktop feature on Fortigate 100A ?

  - by Deniz

  We did recently update the firmware on our Fortigate 100A box and after the upgrade we tried to use the "Virtual Desktop" feature. (This isn't a new firmware feature) We can't find a way to activate or use it. Does anyone have any experience on "Virtual Desktop" of Fortigate devices ?

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• How do I add a second hard drive (within Virtual PC) without formatting it?

  - by Clay Nichols

  I'm trying to add a second hard drive within Virtual PC without formatting it. I followed the instructions for adding a second hard drive but when I add go the the Computer ManagementDisk Management console it wants to format it. The reason I want to add this second hard drive is that it has data on it that I want available to this instance of Virtual PC

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• Can I install a Windows 8 Pro upgrade in a virtual machine?

  - by Dean Schulze

  I bought a Lenovo 430K with Windows 7 Home Premium and upgraded it to Windows 8 Pro. I created a DVD from which I installed the Windows 8 Pro upgrade. I'm underwhelmed with Windows 8, however. I want to install Linux as the host OS and run Windows 8 Pro as a guest OS. Will the Windows 8 Pro DVD that I created install Windows 8 Pro in a virtual machine, or would that virtual machine have to have Windows 7 installed first in order to install the upgrade?

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• Is it possible to run several virtual machines each with independent mouse+keyboard on a single PC?

  - by chiurox

  My goal is to instead of buying 4 separate basic PCs (plus the obvious peripherals), buy just one fast PC and the peripherals. I'm wondering if I can use a more powerful computer, say, one with core i7 and plenty of RAM, with 2 video cards (total of 4 monitor outputs) to run 4 or more virtual machines (WinXPs) so instead of having 4 individual machines, I'll be having just one. However, the catch is, is it possible to have a pair of mouse and keyboard + input/output audio for each of these virtual machines?

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• Top - what does Virtual memory size mean? ...linux/ubuntu

  - by user42159

  I am running Top to monitor my server performance and 2 of my java processes show virtual memory of upto 800MB-1GB. Is that a bad thing? What does virtual memory mean? And oh btw, I have swap of 1GB and it shoes 0% used. So I am confused. Java process = 1 Tomcat server + my own java deamon Server = Ubuntu 9.10 (karmic)

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• How can I copy an XP Mode virtual machine from one computer to another?

  - by Investor5555

  Is it possible to copy an XP Mode Virtual PC image from one computer to a completely different computer (not on the network, not related in any way whatsoever)? I tried this, but it only would seem to work on the same computer: http://www.sevenforums.com/tutorials/21904-virtual-xp-machine-copy.html When I copy it to another computer and modify the settings as described above, the cursor just jumps around all over the screen and never starts.

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• Can I read a smartcard in a virtual machine?

  - by endian

  My employer requires a smartcard to login to their web-based remote working platform. I want to access this platform by using a Remote Desktop Connection on to my Windows 7 Virtual Machine, with the smartcard plugged into my home PC. However, whilst I can see the smartcard on my home PC, it doesn't appear in the virtual machine, despite me having "Smart Cards" enabled in the Local Resources page of Remote Desktop Connection. Is it possible to get this working?

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• Virtualnetwork with virtualbox

  - by vpereira

  I would like to test a firewall solution. For that i would like to create a virtual network, without contact with my network and configure two virtual ethernet cards in my firewall. is that possible? say that my virtual machine has two ethernets? If with virtualbox is not possible, is it possible with any VM solution? To create virtual network and virtual devices in my virtual operational system

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• Hyper-V virtual machine can't be migrated to a specific host in the cluster

  - by Massimo

  I have a three-node Hyper-V cluster running on Windows Server 2008 R2 which is working quite flawlessly: there are no errors, live migration works, all hosts can and will happily run all virtual machines, and so on. But one specific virtual machinee is trying to make me go mad: it works on two nodes of the cluster, but not on the third one. Whenever I try to move the VM to that node, be it in a live migration or with the VM powered off, it always fails. In the event log of the host these events are logged: Source: Hyper-V-VMMS Event ID: 16300 Cannot load a virtual machine configuration: General access denied error (0x80070005) (Virtual machine ID <GUID>) Source: Hyper-V-VMMS Evend ID: 20100 The Virtual Machine Management Service failed to register the configuration for the virtual machine '<GUID>' at 'C:\ClusterStorage\<PATH>\<VM>': General access denied error (0x80070005) Source: Hyper-V-High-Availability Event ID: 21102 'Virtual Machine Configuration <VM>' failed to register the virtual machine with the virtual machine management service. All other VMs can be moved to/from the offending host, and the offending VM can be moved between the other two hosts. Also, this is not a storage problem, because there are other VMs in the same cluster volume, and the host has no troubles running them. What's going on here?

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• Augmented reality problem with multiple webs ervice.

  - by sujitjitu

  Hi, i am working on an Augmented Reality application.I am using android platform. i am retrieving data by using Handler concept from web service to show it above the camera preview. But my problem is that when i am making one web service call it is working fine but with multiple web service call the camera is getting crashed.It is working fine in the emulator but not working in the real device. I don't know what is the problem. I have tried everything not got the solution yet. Please help me its urgent. Thanks in advance..........

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• One bigger Virtual Machine distributed across many Nodes [on hold]

  - by flyer

  I just setup virtual machines on one hardware with Vagrant (this is just a test environment, not production!). I want to use a Puppet to configure them and next try to setup OpenStack. I am not sure If I am understanding how this should look at the end. Is it possible to have below architecture with OpenStack after all where I will run one Virtual Machine with Linux? ------------------------------- | VM | ------------------------------- | NOVA | NOVA | NOVA | ------------------------------- | OpenStack | ------------------------------- | Node | Node | Node | ------------------------------- (In my environment Nodes are just virtual machines, but my question concerns separate Hardware nodes) After some comments... Is it a language barrier, or? This is only my 'virtual environment'. If we imagine this virtual machines are a separate Nodes (e.g. every has 4 cores) the OpenStack is still the same, right? Can I run one Virtual Machine across many Nodes with OpenStack? Is it possible to aggregate the computation power of separate machines in one virtual distributed operating system?

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• Converted VmWare Image does not boot in Virtual Box

  - by vBox Question

  I have a .vddx virtual image which boots in VmWare, but I'm having trouble getting it to work with Sun Virtual Box. In Sun Virtual Box, I created a new Virtual Machine and pointed it at the vddx file from VmWare. When I try to boot the virtual machine, Sun Virtual Box says that the volume is not bootable. VmWare is able to boot from this virtual machine. Does anyone have any suggestions about what might be causing the problem? Is there a conversion utility that I need to run? Any debugging options that I could turn on?

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• Ubuntu apt-get install linux-image

  - by Karl Kloppenborg

  I'd like someone to enlighten me as to what exactly goes on with aptitude when I want a kernel. As we all know, there's pretty much the following kernel option: linux-image-generic linux-image-server linux-image-virtual This morning I did an install and it had linux-image-generic on it, so I ran the following: apt-get -y remove linux-image-* This removed all my kernels as expected, I followed suit with running: apt-get install linux-image-virtual Says I've installed linux-image-server!? Am I missing something here, because I checked twice and it did it twice, however if I manually select a kernel (in my instance I used: linux-image-2.6.35-30-virtual) it will install linux-image-virtual. This seems rather strange to me? Details: Running Ubuntu 9.10 Am I missing something? :)

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• Rendering only a part of the screen in high detail

  - by Bart van Heukelom

  If graphics are rendered for a large viewing angle (e.g. a very large TV or a VR headset), the viewer can't actually focus on the entire image, just a part of it. (Actually, this is the case for regular sized screens as well.) Combined with a way to track the viewer's eyes, you could theoretically exploit this and render the graphics away from the viewer's focus with progressively less details and resolution, gaining performance, without losing perceived quality. Are there any techniques for this available or under development today?

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• Where to set catch-all address in Postfix (virtual mailboxes in affect)

  - by Cem

  I successfully configured Postfix to deliver messages to virtual mailboxes. I can set aliases and pipes inside /etc/postfix/virtual and mailboxes inside /etc/postfix/virtual_mailbox files. However, whenever I set a catch-all domain and point to a remote email address, it overrides all other virtual mailboxes and virtual aliases set in postfix. How can I set a catch-all forwarding to the remote email address when virtual mailbox is enabled? I set catch-all like this: @mydomain.com [email protected] Thanks for your help!

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• More than one XP Mode virtual machines okay under Win 7?

  - by kousen

  I really like the Windows XP Mode virtual machine that comes with Windows 7 (once you download the integration components). I teach technical training classes, and having a machine configured for the classroom is very helpful. My question is, can I configure more than one? The documentation suggests you can make multiple virtual machines, but I can't tell if I can have multiple "Windows XP Mode" VMs. It can't be as simple as configuring one, then just making a copy of the primary disk file, could it? I only plan to run one at a time, but I'd like to configure multiple different VMs for different classes, all running XP if possible. Thanks for any help!

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• how do i upload virtual pc into a wesite using virtual server.

  - by ragu88

  dear friends, my school has given me a project on virtual pc and server. i am supposed to create a website with multiple virtual pcs in it.. students are supposed to go to the website and than to the virtual pc and do their lab experiments there... can i no how m i to do that and how do i upload a virtual pc into the website.. i m using ms virtual server 2005 r2.. Ragu

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