Virtualization is a group of software technologies that allow abstraction between layers of a system. This allows separation between the logical layers of the system, providing isolation, flexibility, and/or the ability to run more than one at a time. This differs from most traditional systems where ...

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Is it possible to run a “Windows Server 2008 R2 SP1 Hyper-V Virtual Machine” on Windows 7x64 Pro machine?

Specifically, I want to run this: http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=27417 This download contains a three Windows Server 2008 R2 SP1 Hyper-V Virtual Machine ...
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Can not boot CentOS VM using VirtIO in KVM

I converted qcow2 image to raw and changed I/O bus to VirtIO for a VM. now I can't boot that VM. I Installed VirtIO driver with following command: mkinitrd --with virtio_pci --with virtio_blk -f ...
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456 views

How do I measure and compare disk performance of my Hyper-V Windows VM?

I'm not sure whether this sounds stupid or lazy, but I'm really not sure. I have a problem with the performance of a VM setup (2008R2-64bit Hyper-V running a 2003R2-32bit Windows server) and I'd like ...
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542 views

virt-manager doesn't show list of local KVMs but virsh does

When I open virt-manager GUI it doesn't show list of KVMs but virsh does. how can fix it?
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1answer
517 views

Difference between Intel-VT and AMD-V

What is the difference in hardware between Intel-VT and AMD-V? I am currently reading Virtual Machines: Versatile Platforms for Systems and Processes chapter eight and Intel-VT is mentioned there but ...
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572 views

OpenVPN routing for OpenVZ containers

I am trying to make OpenVPN tunnel accessible for all OVZ CT's running on the host. I have initialized the tunnel devise on the host server to remote VPN server. Although I have PING response from the ...
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3answers
3k views

Convert directory to QEMU/KVM virtual disk image

I have a directory filled with data at /var/backups/disk1 that I want to convert into a virtual disk image which I'll then be able to boot using QEMU or KVM (the directory contains the file system for ...
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130 views

Running 2 virtual hosts side by side interactively - no guests, just hosts

Are there any virtualisation products out there that let me run Windows XP and Linux side by side and interact with both of them at the same time without logging into them from another computer. i.e. ...
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238 views

Is the # of CPUs on a virtual machine always meaningful?

On a virtual machine, if cat /proc/cpuinfo tells me that there are 4 CPUs, is this just as meaningful as if it were bare metal? Should I configure my server (for example, # of Nginx or Apache workers) ...
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487 views

OpenVZ Host is the source IP address rather than actual web surfers?

I have a problem with my VPS. Simple example: <?php $ip = $_SERVER['REMOTE_ADDR']; Echo "User IP : " . $ip; ?> That code should display the user IP address, but it's showing the HN IP ...
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How do I know if my Xeon Processor supports hardware virtualisation?

I've been scouring the net (mainly the wikipaedia lists and intel's site. I even pulled out the datasheet for my processor) but I can't seem to answer this question. Does my Xeon support hardware ...
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178 views

What would be the best virtualization solution for this particular use-case?

I do software (mostly web) development, and I work alone, so I have to cope with a lot of sysadmin-type work, in order to setup different stacks of web/application/database/source-control servers, let ...
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622 views

Configure Windows Routes for VPN

I have a Virtual PC/VMWare machine that runs Windows Server 2003. This virtual machine uses an IPSec VPN client program to connect to a remote network. I configured the virtual machine to have 2 NICs: ...
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ZFS virtualized on an LVM volume

We've got some large SATA disks kicking around, and I've been toying with the idea of throwing them in a KVM host and installing a FreeNAS VM to manage them. I'd be adding these via LVM to the host, ...
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3answers
341 views

How to find out the virtualization type of an linux VPS?

Having access to an VPS, i need to know which type of virtualization it is running from the terminal. How can i know if it is OpenVZ, Xen, KVM, etc?
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opensm reports - Invalid requested MGID. What does it mean?

I've been working on a virtualized SR-IOV infiniband interface under Xen. If I run the OpenSM daemon under Dom0 IPoIB appears to work in the passed through VF. However, opensm starts using a lot of ...
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1answer
405 views

How can I connect two virtual machines in vSphere ESXi 4.1?

There is documentation available for version 5 (I am running 4.1 per the title), but following the directions raises the error: Incompatible device backing specified for device '0'. upon ...
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407 views

Which hardware to VM ratio for Build-Server virtualization?

After a few comments and answers and thinking, I hope I can now add a TL;DR : If I want full performance(a) and (simple) HW failure redundancy, does it make any sense to go for a virtualization ...
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1answer
380 views

Can I set noatime for my XEN guest OS partition? Will it work?

I have a VPS in cloud environment based on XEN Virtualization platform. /etc/fstab looks like that: LABEL=PRGMRDISK1 / ext3 errors=remount-ro 0 0 As far as I know IO can pretty ...
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3answers
163 views

I have some questions regarding VPS and what I should order?

I have a classifieds website, with around 50thousand ads put in every month. I don't have any more statistics than this. I use PHP and MySql currently, and I am about to install Sphinx or SOLR on ...
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2answers
229 views

Why does my Fedora HD come up as 124GB when it was created to be 700GB in Hyper-V?

Any ideas? How can I tell fedora to use 700GB, and do I have reformat to do this? Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_computer-lv_root 124G ...
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Converting a live server to XEN domU

What are the steps of converting a live server as a XEN guest? Here's my understanding of the process, please comment if you see any flaws with such thinking. Install a xen guest kernel that would ...
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2answers
3k views

Cannot communicate between two VM on the same physical machine using NAT IP Addressing

I have one physical machine, on it there are 2 virtual machines. One of the VM is the application machine, another is the db machine. All are running Windows XP. I am using Sun Virtual Box for ...
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KVM Server error

I have installed KVM server in Centos 6.4 and i have created gluster storage pool in that gluster storage pool i have installed some linux and window VM's i have assigned 1GB RAM and 20 GD virtual ...
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Where can I learn fundamentals about hypervisors in context of other hardware virtualization solutions? [closed]

I am interested in learning more about hardware virtualization, with a specific focus on hypervisors. I am competent to manage a server and would be able to configure an environment to work using ...