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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Why doesn't VMWare DRS automatically migrate VMs when a host is put in maintenance mode?

We have 4 ESXi 5.0 hosts in a VMWare cluster on shared storage (NFS) with DRS and HA on. We want to perform a memory upgrade on one of the hosts. We put that host in maintenance mode but DRS did not ...
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221 views

Can I let my users create VM's as they wish?

In my dev team now, there has risen a request to be able to create/run VM's on demand. What they are asking for is a system/method/tool that they can select the following: CPU's, RAM, OS , Hard disk ...
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Changing boot device for a QEMU-KVM virtual machine

I am trying to change the boot device for a VM. I go to the VM's XML file in /etc/libvirt/qemu and set <boot dev='cdrom' />. Still, it attempts to boot from the harddrive instead of the cdrom. ...
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Which VM Product is right for me? (GPU Virtualization?)

I'm looking for a VM Product that has the following features: - Being able to access the underlying hardware (GPU especially?) - I have Virtualization Support on my CPU, so that's not a problem. ...
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Can I access Cassini from a remote machine?

So I'm having that browser compatibility party we all have at some point in a web project and want to access my localhost Cassini instance created by VS2008 rather than having to upload to our ...
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2answers
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VirtualBox guest network lost after host disconnects

I am running VirtualBox both on a Snow Leopard OSX host machine and on a Windows Vista host machine. Whenever my host machines lose internet connection the guest machines seem to lose internet ...
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Running Xen inside VMware?

There are a number of Xen based virtualization products on the market, and like with other new software, there is a need to try them out in a lab environment before doing production installation on ...
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2answers
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How to keep time on resumed KVM guest with libvirt?

On my host I am using libvirt and a KVM guest. When the host is shutting down, libvirt suspends the guest. When the host is starting up, libvirt resumes the guest. The problem is, if the guest is ...
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How would you build a cheap Virtual Server farm for home development? [closed]

I would like a virtual server farm at home, ideally 6 virtual servers, all for my own personal development. What is the cheapest way for me to achieve this? I'd ideally like to use VMWare as I use it ...
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1answer
4k views

How to create a Hyper-V Internal network

I have a Windows 2008 server running multiple Hyper-V guests. I want to create a Hyper-V "Internal" network. So far, I cannot get anything to communicate. I created the Internal network adapter in ...
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2answers
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Tuning Open-iSCSI initiator settings for VM LUNs

I have a bunch of VM servers running Xen VMs from iSCSI LUNs mounted in the Dom0 host via Open-iSCSI. It's just a simple single-path setup (redundancy is on the target side via clustered storage and a ...
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2answers
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How to get Linux udev to play nice with Hyper-V IC synthetic network driver

I managed to get the Debian 6.0.1 to work with the Microsoft Hyper-V synthetic drivers, thanks to this question. However, if I don't remove the entry for the synthetic ethernet card from ...
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Moving Vmware Workstation VM to another host causes reactivation

I need to find a solution for developers using virtual environments with VMWare Workstation 7. We develop in different and incompatible environments. Presently almost a week is lost when modifying a ...
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1answer
953 views

TCP/IP performance tuning under KVM/Qemu

With more and more companies switching to public cloud services, I'm curious what you guys' thoughts are on TCP/IP tuning in the cloud. Is it worth bothering with? Given that you don't have access to ...
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0answers
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Why do I need to assign static ip address to the bridge and not to the physical interface? [duplicate]

I have bond0 with two physical interfaces in it. Normally I used to assign static IP address to this bond0 to set up internet connectivity on the server. Now, because of LXC virtual guests, I had to ...
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6answers
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Are Rackspace's Cloud Servers really cloud hosting?

I may be confused about what cloud hosting really is... I asked Rackspace how its Cloud Server (CS) 256MB/10GB compares to Slicehost's 256slice VPS, and they said it's exactly the same (only ...
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8answers
27k views

VMware is so slow that is useless, this is normal?

On my desktop computer I have VirtualBox, and i can run a lot of concurrent VMs, up to near native speed. On my server, that is twice as powerful than my desktop computer, I have debian+VMware server ...
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3answers
869 views

Why use a type 2 hypervisor?

I have a question about type 1 and type 2 hypervisors. Type 1 runs on the bare metal, and then the end operating systems are installed on top. This seems to me like the most logical way to build a ...
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5answers
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Is it realistic to run Windows Server 2008 with 1GB of RAM?

I am just about to "invest" in a cheap Windows 2008 VPS ($30 per month!) which comes with 1GB. Before I do that I thought I would ask if its realistic to expect a usable server with only 1GB of RAM? ...
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4answers
817 views

vCPU performance between 1 or 2 vCPU's

Within virtualisation (Predominantly VMware) is there a performance advantage using either 1 CPU with 4 cores or 2 CPU's with 2 cores? Let's assume the application running on a VM can use two CPU's.
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6answers
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What is the perfect setup for a small Linux virtual server?

I have my own email server, and it serves a couple of dozen users. I need to replace it right now, and I want the replacement to be a virtual server image running under a hypervisor. My plans for ...
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7answers
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Best virtualization server core [closed]

What is the best Virtualization server core and Why. Most people will say VMWare, but they are also Hyper-V and Xen server. Whos the best at the lower cost ? It's for production environnement, so ...
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7answers
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How do I move my production servers into a devlopment VM?

I have about 3 servers that are probably almost 10 years old, all using code what one might consider worst-practices for programming's sake. I'm terrified of making changes to the thing (production ...
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9answers
293 views

Why is Virtual PC being bundled with Windows 7 significant? [closed]

As I see it: Microsoft has always provided backward compatibility for legacy applications; As far as the end user is concerned, things won't be behaving any different from what they normally expect. ...
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4answers
283 views

Virtualization for hardware resiliency?

Can anyone tell me if it is possible to pool several physical servers to run a resilient virtualization environment. Our servers are getting more and more critical to our clients and we want to do ...
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4answers
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Best practice for assigning private IP ranges?

Is it common practice to use certain private IP address ranges for certain purposes? I'm starting to look into setting up virtualization systems and storage servers. Each system has two NICs, one ...
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5answers
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What's the point of running a virtual instance?

I sometimes hear things like "we have 5 servers, with 20 virtual xen instances". Why would you do this? What advantages does this have? Is it so you get the redundancy of multiple servers from only ...
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1answer
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CentOS 7 Minimal Install doesn't comes with networks scripts? Which version to use then? [closed]

I'm installing CentOS 7 as virtual machine but I'm having some problems related to network. As image shows I select Minimal Install for later add trough YUM any packages I want as for example: PHP, ...
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4answers
623 views

Different ways to shut down a system

I was asked this question in an interview for QA position: Tell me all the possible ways you can shutdown your system. The system could be in a network. I know this question is little vague. ...
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7answers
991 views

Virtualizing Solaris 10?

What is the best way to virtualize Solaris 10 (not OpenSolaris) under Linux or OpenSolaris? I have software that is only supported under Solaris so OpenSolaris is not an option. I'd like to have ...
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3answers
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What is the difference between RHEV and oVirt?

When I read the wikipedia articles about RHEV and oVirt, I can't really figure out why Red Hat have both projects, as they seam to solve the same problem? http://en.wikipedia.org/wiki/RHEV ...
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5answers
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How to extend a Linux PV partition online after virtual disk growth

VMware allows to extend the size of a virtual disk online - when the VM is running. The next expected steps for Linux system are: extend the partition: delete and create a larger one with fdisk ...
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2answers
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Migrating virtual (VMWare) workstations from AMD to Intel hardware

We're a small dev team that runs instances VMWare Ubuntu hosted on AMD x64 machines. Our hardware will be upgraded to Intel i7, but we want to continue to use the virtual images we've built. But ...
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4answers
1k views

FreeBSD Hypervisor?

is there any possibility to have FreeBSD running virtual guests (Linux and Windows) apart from VirtualBox? Didn't find any recent information yet.
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7answers
517 views

Any guidelines to think about when considering virtualizing an exchange server?

A friend of mine's shop is considering virtualizing several of their servers, including their Exchange servers (2007) and their BlackBerry-Exchange gateway systems. The systems support roughly 150 ...
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5answers
662 views

Use or don't use virtualization for Linux Webserver?

I maintain the servers for a big webproject (java + postgres + some tools around) which is currently hosted on three machines: Machine: Mailserver (postfix), Ad-Server (lighttpd + php + openx) ...
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1answer
619 views

Virtual vs. Named SQL Instances

What are the benefits to using virtual as opposed to running multiple instances of SQL on a box?
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2answers
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How do I change the size of a VHD?

I have a fixed size virtual hard drive that is running out of space. What's a good way to go about increasing the size? This VHD is created from Microsoft Virtual PC and/or Microsoft Virtual Server.
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5answers
220 views

What should be considered when purchasing a virtual machine set up?

I've been asked for an opinion about a purchase of a blade server that should be used for running virtual machines. I have very little experience in this, so what things should be considered in terms ...
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3answers
830 views

Recommendations: configuring a 10GbE NAS stack for virtualisation storage

I'll try as hard as I can to word this so it is not considered a shopping list. We have been successfully running a dev/test ESXi environment for some time, with a couple of Dell PE2950III servers ...
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2answers
3k views

Can I safely increase the number of processors on a VM?

I have several Windows 7, CentOS, and Ubuntu virtual machines running within a VMWare ESXi server. To get better performance while building on them via Jenkins, I would like to increase their number ...
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votes
4answers
3k views

Virtualization platform for older hardware (non Intel-VT/AMD-V)

I am trying to build a small virtualized testbed using some older Xeon-based servers that do not support Intel VT-x. In their previous use, the servers were running VMware ESX 3.5. Is there a more ...
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3answers
196 views

What options do I have to clone a physical server as easily as a virtual machine?

We use virtual machines a great deal at my company, Hyper-V mainly but we have also dabbled with ESXi plus vCenter. Besides the traditional advantage of being able to consolidate many physical ...
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2answers
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Difference between “Windows Virtual PC” and “Microsoft Virtual PC”

What is the difference between "Windows Virtual PC" (RTM released today) and "Microsoft Virtual PC"?
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3answers
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Where to install ESXi so that all local drives are available to VSAN

I am currently setting up a new 3-host VSAN cluster that will be placed into production soon. (Note this is the newer "Virtual SAN" (VSAN) technology, not the older vSphere Storage Appliance (VSA) ...
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3answers
29k views

VMWare ESXi: how to add network drivers to installation?

Background / Problem I have two new servers (Dell R720 & Dell R520) that I plan to install ESXi onto. During the VMWare Hypervisor installation, I'm told that no network adapters exist. Upon ...
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379 views

Can A Virtual Machine Be Converted to a Virtual Server e.g VMWare?

The Simple Question Can I convert an existing VM to a Virtual Server (e.g. VMWare)? I'm using Oracle's one and only awesome product, VirtualBox, and I'm trying to setup a SharePoint Farm to ...
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3answers
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Windows Virtual PC and VirtualBox on the same PC

I am running Windows 7 Professional x64. Presently I am using Windows Virtual PC. I'd like to try VirtualBox. Can both virtualization platforms be installed and run on the same instance of Windows? ...
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3answers
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vSphere machine wont start: Insufficient disk space on datastore

I am trying to add a virtual disk using a VMFS datastore with 1.98 TB of capacity and 85 GB used. I then power on the virtual machine, and it gives me the Insufficient disk space on datastore error. ...
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2answers
654 views

PostgreSQL database server virtualization, yay or nay?

Our former CTO (now "consultant") at some point warned his replacement about not virtualizing database servers, specifically our PgSQL database servers, but rather run them as actual, physical ...