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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16 views

Installing Wndows 8.1 libivrt

I am trying to install Windows 8.1 trial using libvirt under CentOS 7.1. I have gotten past the part of creating the bridge, br0, and that part works fine. However, the installation hangs forever on ...
0
votes
0answers
21 views

Hyper-v virtual machine acting as two separate vm's

I have a Hyper-V virtual machine (vm1) that has two separate instances of itself. I can log into what should be the same VM (vm1) through Hyper-v and RDP (Remote Desktop Connection) with the same ip ...
-2
votes
0answers
12 views

install openstack on virtual machines

Can I install openstack on 3 different virtual machines with the configurations as listed: Controller Node: 1 processor, 4 GB memory, and 10 GB storage Network Node: 1 processor, 4 Gb memory, and 20 ...
0
votes
0answers
10 views

VirtualBox networking (inception computing) [on hold]

I am new to world of networking and now I am trying to connect 3 PC`s together. I have windows 7 host that runs Ubuntu64-bit server guest, that runs ubuntu32 server guest. Win7- Host Only network ...
0
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1answer
32 views

Linux virtual server, direct routing (LVS/DR) on VPN

Is it possible to set up Linux Virtual Server on VPN? The real servers should lie on the same LAN segment. I want the real server to be a non-LAN server connected to the Internet. Could it be ...
1
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0answers
7 views

KVM or Xen for VGA Pass-through [migrated]

I'm in the planning phase of setting up a personal virtualization server. One of the virtual machines I want to setup is a Windows box with Steam. Ideally, I want to stream higher-end games to my ...
0
votes
1answer
29 views

Finding correct IOPS to set limit with ESXi 5.5u2 and vSphere

We're running an ESXi 5.5u2 hypervisor that has a mirror of 2 15k SAS drives with a couple of VMs inside and we noticed some services become briefly unreachable if another VM is using all the IO. So ...
0
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0answers
33 views
+50

Is a single instance VM with a SLA possible in Azure with 3rd party software?

I understand that single instance VMs aren't eligible for an SLA in Azure. For the SMB customers who have important applications that weren't built well enough (Sage 50 in my case) to allow you to ...
0
votes
1answer
27 views

Bloomfield CPU without Intel VT-x

According to my research an Intel Bloomfield CPU (more specific: a i7-920) should support Intel VT-x technology ...
1
vote
1answer
22 views

Can I migrate a VM between vCenter servers in linked mode?

Right now I have two separate vCenter servers (one older, one brand new), each managing 3 clusters of hosts. I will eventually need to get 300-500 VM's from the old clusters to the new. If I put the ...
24
votes
8answers
3k views

Consumer (or prosumer) SSD's vs. fast HDD in a server environment

What are the pro's and con's of consumer SSDs vs. fast 10-15k spinning drives in a server environment? We cannot use enterprise SSDs in our case as they are prohibitively expensive. Here's some notes ...
1
vote
1answer
44 views

Migrating AWS EC2 m3.large to m4.large

New m4 instances look much better than previous m3 instances (regarding performance and pice), so I'm going to make them as default instances for our cloud services. These services ran before on m3 ...
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votes
0answers
32 views

Fault Tolerance in Virtual Servers [closed]

I have read about virtualization though I don't have real life experience. One of the ways to achieve is by installing Hypervisor in a server machine and have management software in admin's machine to ...
7
votes
1answer
591 views

Hardware requirements for 100 virtualized high performance Windows 7 desktops?

We are debating whether to add Client Hyper-V or VMWare Player Pro to new Windows 10 desktops later this year and have our developers run their developer tools in a Windows 7 VM on their local ...
1
vote
2answers
64 views

XenServer, mapping SAN LUN to VDI

I have a few XenServer 6.2/6.5 hosts, and ZFS SAN datastore, providing iSCSI exports for VM storage. It's not an optimal solution to export huge 1-2 Tb LUN as XenServer LVMoiSCSI SR, because: a) no ...
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votes
0answers
16 views

Deploying the Virtual Appliance of Nexpose

I am going to deploy a Virtual Appliance in virtual environments. The Virtual Appliance is tested and supported in the following environments: VMware Player 4.x or later VMware Workstation 8.x or ...
0
votes
1answer
14 views

Is it possible to transfer OpenVZ VPS image to XEN platform?

I'm having a memory related issue with my vps on openvz platform and I guess that my hosting provider is overselling RAM. So, I'm thinking to move on a xen platform since ram cannot be oversold but I ...
0
votes
0answers
10 views

migrate xen server to new HDD

I have a Xen Server with multiple VMs that are mirrored with DRBD to a Backup Server, and it's running out of space. I want to migrate it to a bigger Harddisk, but I'm not sure about how to go about ...
0
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0answers
14 views

libvirt: can it provision network interfaces where the network backend is running in a domU rather than dom0?

Thanks to a great blog post, only slightly out of date [1] I've managed to configure a dom0 which has no networking at all: physical network interfaces are passed through to dedicated domU guests ...
2
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0answers
27 views

Security concerns w/ physical vs virtual network gateways [closed]

I am in the process of setting up a private network that uses a gateway system for access to certain services on systems behind the network, e.g. ssh, ftp. I have some experience using virtualized ...
0
votes
0answers
47 views

Why does the assigned memory for a Hyper-V, 2008 R2, host differ from the installed memory on the Hyper-V, 2008 R2, VM child? [closed]

I've been having memory issues on one of the child, VM servers running on a Hyper-V host. While searching for an answer, I was comparing memory data about the child on the host OS (Hyper-V manager) ...
0
votes
0answers
10 views

Virtualbox: deleted snapshot, vm won't boot [migrated]

The problem I accidentally deleted the snapshot file located at <virtualbox-folder>/vms/<vm-name>/Snapshots. When I try to start the VM (which the .vdi file is intact), the following ...
0
votes
2answers
49 views

Booting hypervisor and network stacks using PXE Server

I am trying configure server using PXE boot. I successfully installed ESXi hypervisor using PXE and would like to know if there is a way by which I can specify Virtual machines at the time of PXE ...
0
votes
0answers
23 views

Enabling SSLv3 in vCloud Director 5.6.x

We have some legacy systems that use SSLv3 but vCloud Director disabled SSLv3 by default from version 5.5.3, see: ...
0
votes
1answer
34 views

How do I safely clone a Linux VM in Hyper-V?

This is a home lab, so nothing critical. I have a base Linux ISO I'm installing for all my VMs, but the install takes a long time, and even once it's done, I still have to go install a ton of updates ...
1
vote
2answers
18 views

Setting up emergency console access with xen

On Gandi (or other providers) you can activate an emergency console to your VM. It binds a SSH channel to a temporary IP and port. I have my own server running on xen. I would like to implement an ...
1
vote
2answers
114 views

Install windows 2012 R2 over KVM-virtualizaton

I'm trying to install Windows Server 2012 R2 over linux KVM-virtualization. The installation process stops and requires drivers to continue. I'm trying with virtio drivers from fedora but doesn't ...
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votes
1answer
27 views

How do i find the overcommit ratio for CPU on a KVM host or for that matter on any hypervisor?

I have a host and I have installed KVM on it.Now I need to know how much overcommiting of resources it allows, CPU, memory. Is there some command to get the ratios or it all exists in theory and no ...
1
vote
0answers
40 views

Datastores Occasionally Disappear on vSphere Client

I'm currently running several virtual servers and connecting to the vCenter using the vSphere Windows client. We're connecting with to a datastore on another server which has a separate folder for ...
0
votes
0answers
115 views

Server 2012 R2 Hyper-V Virtual Switch host mac address conflict 331FLR

I have 3 new HP DL360G9 servers all running Server 2012 R2 standard with the Hyper-V role installed. All the servers have the built in Intel 331FLR 4 port gigabit nic. I have the ports teamed into 2 ...
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votes
1answer
19 views

How to edit the XML config file of a domain with virsh? [closed]

How to easily edit the XML config file of a domain with virsh?
0
votes
1answer
33 views

What FQDN should I use for Postfix setup in Satellite Mode on Ubuntu VM on VirtualBox?

I am getting lost with trying to configure Postfix on a Ubuntu 14.04 VM running on VirtualBox. The VirtualBox has 2 NICs: 1)NAT and is Internet access through my computer running the VM and ...
1
vote
1answer
31 views

Persistent ESXi iSCSI datastore from guest VM based target? [closed]

I'm in the process of building a home lab environment for Cisco and VMware that will also double as a NAS. The system runs ESXi v6.0 bare metal. Part of my design is that I have a Lenovo TS440 with ...
0
votes
0answers
19 views

How to hot add a new disk with virsh attach-disk?

I'm trying to add a new LVM disk to my guest machine (Ubuntu 14.04.1) by doing the following on the host: lvcreate -L 14G -n vm_vm005_data3 vg00 virsh attach-disk vm005 /dev/vg00/vm_vm005_data3 ...
1
vote
1answer
47 views

how do I clone a disk that is represented by a vmdk file?

I have VirtualBox installed on Windows 8.1. I have created a CentOS 7 virtual machine that loads the contents of a detached hard drive that is connected to the PC via a SATA Wire. The virtual ...
0
votes
0answers
10 views

Can I install openstack shared services on a compute node?

I am currently evaluating Openstack as an alternative to VMWare for our company. I would like to install Openstack on a Dell FX2 chassis with three physical servers in it. I was wondering if it was ...
0
votes
0answers
25 views

Stucking qemu-kvm process

What i have: CentOS 7.1 as KVM host - Xeon E3-1200 v2, 32GB RAM, with and without dedicated raid controller (i tried both options) 3x Ubuntu 14.04.2 as quest VM (3 CPU, 512MB RAM on each VM) host ...
1
vote
0answers
22 views

Autostart VM on Witsbits (ClearVM) Server

I am setting up few VMs on my Witsbits (ClearVM) server. They are easy to setup and manage but... I would like to start VM together with the server. The management interface allows for manual ...
0
votes
0answers
30 views

Is it possible to migrate a Parallels Desktop Windows VM to Mac OS X BootCamp?

I have a Parallels Desktop virtual environment that includes software that cannot be reinstalled elsewhere. It's native to that VM. I'm running the environment on my Mac Mini and am seeing huge ...
0
votes
0answers
22 views

vboxmanage: Start Aborted VM

A quick question. How do you start a VM that is in aborted state from vboxmanage? It reports that it's succesful, but then does not run (as confirmed by vboxmanage list runningvms) In the ...
0
votes
1answer
19 views

Postfix not receiving mail for virtual domain from outside (only locally)

I have postfix mail server running at mail.123.com (ip eg 1.1.1.1), then I have site books.com (ip eg 2.2.2.2) and it's DNS records like this: MX record as mail.123.com A record mail.books.com same ...
1
vote
1answer
50 views

SSH fails often when contacting VM from remote machine

I have a Windows 8.1 Host in which I installed ubuntu server 15.05 in a virtual machine. I set an SSH server in the guest (ubuntu) and then I create a forwarding rule from the host port 2222 to the ...
0
votes
0answers
10 views

Application Virtualization Risk Through WAN / Internet

I was weighing pros and cons about the new mission critical system that through application virtualization, will allow my colleagues from 3 different countries to access it. Here are some background ...
1
vote
2answers
50 views

Virtualization: vCPU pinning with Hyperthreading Host CPU?

I'm using KVM/libvirt on a Linux server with Core i7-2600 CPU, which has the following CPU topology (1 Socket, 4 Cores, 8 Threads): Physical | Logical ---------+-------- Core 0 | 0, 4 Core 1 | 1, ...
0
votes
2answers
28 views

How to check the number of CPUs and cores from host with virsh?

How to check the number of CPUs and cores available in the host machine using virsh?
13
votes
3answers
1k views

Virtual machines and I/O heavy workload, is it ever sane?

I have seen on numerous virtualization services (Azure) and products (vmware,kvm,hyperv) I/O and system stalls under heavy I/O workload. My questions are: Is it ever sane to use a Virtualized ...
0
votes
0answers
34 views

Proxmox Virtualized Client (Network Configuration)

first some information about me. I ordered a server from ovh and purchased one failover ip to test proxmox and do some training. The main Server is hosting proxmox(Example IP: 123.45.67.89 to figure ...
1
vote
1answer
81 views

Installing Server 2012R2 on VM with GPT harddrive issues

So... long story short I'm working on automated installations of Windows Server 2012 R2 on systems with GPT drives both physical and virtual. I haven't brought the disk back down stairs to the ...
0
votes
2answers
65 views

Should I backup from within each guest, or from the host?

I'm searching for advice on whether backups are better taken from within a guest (e.g. ShadowProtect), or from within the host (e.g. copying virtual disk files, or other software). We have 12 VM's (a ...
0
votes
1answer
78 views

Switching back to libxl from xend without rebooting

I did something dumb: I enabled xend over libxl and started an instance with xend. Now, libxl won't start any instances, even though I got rid of all the xend instances and stopped xend: root@xen1 ...