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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94 views

How to diagnose sporadic performance issues?

I have a web application with very varying response times and can't find out what causes that. That's the (quite complicated) setup: Powerful (i7, 32GB RAM) dedicated server in a German data center, ...
9
votes
3answers
658 views

What does ZeroVM virtualize?

I'm having a bit of trouble wrapping my head aroung ZeroVM. Let's say I want to run Wordpress. One option is to lease a hosted virtual server running VMWare, Virtualbox, Xen, CoreOS, or something ...
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1answer
30 views

vCenter VUM version for my application

I have ESXI 5.1 u1 loaded on the three 520's in our VRTX. This is the latest version currently support by the Dell VRTX system. I am managing with version 5.5 of the vCenter appliance. My ...
2
votes
3answers
437 views

Docker: How to partition a large server?

So I have a Dell XS23 Rack with 8 CPUs and 40G Ram with vmware esxi in my production environment. The way I'd partitioned it before was 2 API servers (quad core, 8gig ram) 2 DB servers same specs, ...
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2answers
79 views

Microservers VS Virtual Servers

I am reading this articles in regard to microservers : 10 things you should know about microserver Microservers : What you need to know It seems to conclude that micoservers are best tailored ...
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0answers
278 views

XenServer open vSwitch performance downgrade

I'm trying to capture part of an inter hypervisor traffic between 2 virtual machines running over XenServer 6.2. I want to mirror some TCP sessions to a 3rd virtual machine with minimum affect to the ...
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2answers
93 views

KVM Disk Formats: Portability

I have recently begun experimenting with the KVM virtualization infrastructure. After deployment, I used virt-manager running on a management computer to build my first guest. I notice that, by ...
1
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0answers
25 views

Would using containers be appropriate for a virtual lab?

So far i have been running a VM lab using virtual box, however functionally i cant see a difference between using virtualbox and a container based virtualization application, such as lxc. This is ...
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3answers
382 views

How can I automate and run post installation commands in Azure Virtual Machines?

I need to deploy Azure hosts and configure them according to a pre-defined script once they are loaded. Is there any example, guidance,or tutorial on how to modify an Azure VM once the instance is ...
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1answer
1k views

KVM-Host OS recommendation [closed]

I am about to migrate a server installation (one OS) to a newer hardware and wish to enable/use KVM. So the hardware is fixed (https://www.hetzner.de/hosting/produkte_rootserver/ex40) , now I got the ...
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0answers
47 views

How to benchmark a whole storage infrastructure

I'm a 100% sure that I'm not the first one to consider benchmarking a whole infrastructure, but yet I haven't found any relevant information on how to face this challenge. As I guess we all know what ...
0
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1answer
65 views

Combining 3 physical servers into 1 [closed]

We have 3 physical servers (1 mail server, 1 file server and 1 "other"). I want to combine these into a single server running a virtual environment and then make images and backups so that if a ...
0
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1answer
61 views

Routing single v6 /64 range to virtual machines

I am building a virtualisation host, and I want my virtual machines to be available via both v4 and v6 IP address. The host I have (Xen 4.1.3 with Debian Wheezy in dom0) has one physical eth0 ...
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0answers
219 views

Azure VPN shows connecting but I can ping/rdp from local network

I set up a virtual network on Azure and connected it with Site to Site VPN to my local network. I am able to ping and RDP to the VM's in Azure from my local network. The problem is that the VPN ...
0
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1answer
214 views

Creating VLANs between network namespaces [closed]

I want to implement the topology shown in the figure below using network namespaces (ns1 to ns4). ...
0
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0answers
464 views

Dell 12G R720 Hyper-V host virtual/physical NIC stops working

On the host 1 physical adapter is plugged into our network, on host itself I have Hyper-V role. I have created a external switch and binded it to the physical Broadcom NetXtreme Gigabit Ethernet, box ...
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1answer
39 views

Virtual machine and VPN clients on same subnet

I have a Linux server running OpenVPN-AS and vmware player which runs a windows 2003 server. I need the remote VPN clients to connect and access windows shares from the VM. I can't figure out how to ...
0
votes
1answer
38 views

Virtual Routing for root virtual machines on 1 IP

I wan't to install several (around 10) virtual machines on our server. We have 1 public IP-address assigned to it. I wan't to use virtualbox (and phpvirtualbox for administration). I have no control ...
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votes
1answer
90 views

Windows server 2003 R2 supported guest operating system [closed]

In this link it is mentioned like window server 2012 can be used as guest OS in window server 2008 R2 Can I run windows 8 or window 7 as guest OS in window server 2003 R2 as virtual machine? Even ...
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0answers
94 views

VDA Disk Fail / Virtual machine corrupt

I am hoping I can get some help here. I have a server that is hosted with a very large server hosting company and today the server became unavailable. On contacting the company they said that the ...
3
votes
1answer
250 views

Private network between two KVM VMs

I'm trying to connect two KVM hosts together with a transparent ethernet link. I'm using Proxmox VE as the host and have configured 2 KVM VEs with ethernet interfaces and joined them to a single ...
1
vote
1answer
320 views

How to clone vm esxi without shutdown vm?

How do we cloning the VM from VMWare ESXi without shutdown it? The VM is now on production so it will be impossible to shut it because it will create network impact.
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votes
1answer
204 views

What would happen if I were to install VMware tools/VirtualBox Additions on a real (non-virtualized) computer? [closed]

I've wanted to know about this for a while, but I haven't had a computer that I would risk trying it out on. What might happen if I were to install virtualization 'assist' software, meant to be run on ...
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1answer
56 views

Which is the most recent version of Virtualbox guest additions work with WindowsPE (possibly needing a signed driver?)

I'm making a windows (2012) deployment server with a capture boot image. I'm building a win7 client image to sysprep on virtualbox. I syspreped it changed the network to boot first and then I get a ...
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0answers
91 views

Red Hat Virtualization, slow DB writes or network from virtual machine

I am running JBoss on both a physical machine, and a VM that runs within that same physical machine. The JBoss instance on physical machine is operating fast, but the JBoss on VM is slow (several ...
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0answers
105 views

macvlan on host, macvtap guest, routing via host gives error

I have a setup on CentOS 6.5 Host configuration: macvlan0-> 10.0.0.2/24 ppp0 -> connected to the internet Guest configuration macvtap0-> 10.0.0.4/24 gateway -> 10.0.0.2 Other host ...
0
votes
1answer
104 views

Which is better - adding an IIS site or adding a new virtual server?

We have a 16-core server which acts as a Virtual Machine host. One of the VM guests is a Windows Server 2012 box which hosts a .NET Web Service that feeds live information to users of a mobile ...
1
vote
1answer
70 views

imaging an SBS 2003 drive for use on virtualbox

I've got an aging SBS 2003 server with raid 1 IDE drives and I want to take an image of the drive that I can use in a virtualbox VM. Is this possible - and what software is recommended for taking ...
0
votes
1answer
660 views

how to connect multiple kvm/qemu VM guests in to a subnet [closed]

I want to setup a simple subnetwork of KVM/QEMU guest VMs living on a single host (Fedora 19) for testing purposes. The subnet would contain 3 servers: 1 Debian 6.x eth0 ip: 10.0.0.7 eth1 ...
1
vote
1answer
201 views

Access web server on VM from a machine in a different subnet

I cannot access to a web application running on a virtual machine hosted by KVM from a machine in a different subnet. So, I would like to access from the machine 192.168.1.2 (top right in green ...
6
votes
1answer
1k views

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 ...
0
votes
0answers
11 views

Vsphere Error OS X Console, Already modified wrapper.conf

I was able to view the console on the vSphere appliance in all three OS X browsers. Can't seem to do it any more, just get a can not connect error. Has anything changed in the last few days? I have ...
0
votes
3answers
112 views

Backups through distributed filesystems

I hope I can articulate my question as precise as possible. I am seeking for a way to make backups for my vm-servers as soon and frequent as possible as the data they are handling/producing are ...
1
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0answers
61 views

How to use kexec to do a live upgrade of hotswap ram on a CentOS vm image?

Just as the question states, is there a way and what's the best method todo a live ram upgrade with kexec?
2
votes
2answers
694 views

Error running xe sr-create

I'm trying to add a new SATA drive (SSD) as a local SR. XenServer may have seen the drive before, but I don't recall every doing anything with it. I'm attempting to run this command: xe sr-create ...
1
vote
1answer
314 views

ovirt vdsm vlan - cant create virtual lan only wan port

I installed ovirt 3.3 on fedora 19 on my server. The Server has one ethernet connection, and it is a WAN so I don't have a LAN ip, or DHCP. I set a bridged interface (ovirtmgmt) on this interface ...
2
votes
1answer
594 views

Experience using Disk2Vhd to P2V migrate Exchange Server?

I'm interested to know your thoughts and/or experience with using Disk2vhd to migrate a physical Exchange 2007 server to a virtual machine. I assume (from reading articles on P2V exchange) that using ...
1
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0answers
519 views

CentOS 6.5 Xen Virtual Machine Issue 'this function is not supported by the connection driver'

I am trying to segment my system into a number of virtual machines but just cant seem to get this to work. I think I am close but not quite there. I have install xen, virsh, xl etc and I am using ...
1
vote
1answer
177 views

vmware Converter issue with 'System Reserved'

Working on converting a Windows Server 2008 R2 machine from physical to virtual. Each time I run the converter it fails at 98%. I'm pretty sure the issue is occurring because vmware doesn't know what ...
0
votes
2answers
49 views

Managing several vcenter hosts from one vsphere window

I have a couple of VMware hosts, 4.x and 5.x, on different networks etc. Is it possible to manage them from one instance of vCenter (virtual appliance) 5.5.0? If so, where is the option to add them?
0
votes
1answer
31 views

Virtualizing On a Domain Controller Server

Im Installing a new physical Domain Controller Server 2012, But I want to know if its recommended to virtulize other servers on this Domain Controller Server. Thank you
2
votes
1answer
46 views

Delays when contacting vSphere virtual machines

We using vSphere 5 to host over a dozen virtual servers and all are Windows 2008 R2 or newer. I'm experiencing a bad delay of a few seconds after a VM has been idle for a little while (may only be a ...
0
votes
2answers
188 views

Qemu switches to “stopped” state during bootup

I recently tried to boot up my image of Debian and noticed that during bootup, Qemu - according to the window title - switches it state to QEMU [stopped] and doesn't respond. I checked qemu-kvm and ...
0
votes
1answer
264 views

Redirect Apache virtual host to virtual machine

I have a dedicated server running apache2 and I want to have several virtual machine (for different development environment). I already succeeded creating virtual machines using virtualbox. My server ...
0
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1answer
147 views

how to monitor bandwidth consumption of a virtual machine

I have a windows server and four virtual machines running on it. Different applications are running on each of those virtual machines. So without logging into each of the virtual machines separately ...
-1
votes
3answers
231 views

How Reliable is Virtualization when compared to dedicated Hardware?

In my organisation we have plenty of mission critical servers and currently there is a debate whether for critical servers we should use VMWare vSphere 5 or have a dedicated hardware? The perception ...
-4
votes
2answers
57 views

Enable Virtualization In Hyper-V [closed]

I need to run OpenStack on Hyper-V for test environments. Where to enable running hypervisor applications on Hyper-V. Help me please.
0
votes
1answer
1k views

ESXi 5.5 missing VMware Tools ISOs

The VMware Tools ISO's in my new ESXi 5.5 installation are missing. Where can I download them from?
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0answers
70 views

How can I export a XenServer virtual machine with all its snapshots?

Is there a way to export a virtual machine running on XenServer with all its past snapshots? I have tried to export a VM through XenCenter (right click on the machine and "Export..."). After importing ...
4
votes
2answers
883 views

Proper Hyper-V Network Configuration for Windows Server 2012?

We just put our first Hyper-V based web solution online about a month ago (Diagram below). We're having intermittent communication issues between Virtual Machines during periods of elevated traffic, ...