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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629 views

VT enabled in BIOS but KVM failed to detect

I Have Dell OPTIPLEX 755 machine with VT enabled in BIOS but when i trying to check using KVM i am getting following error I am missing something? root@nova-controller:~# kvm-ok INFO: /dev/kvm does ...
0
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1answer
61 views

Consequences of exposing VM storage on same subnet as VM's and hypervisor

I recently purchased a RAID array to store my VM's and segregate the storage from the host machine. Since my needs are pretty simple I've configured the VM's to bridge with the host network (I think ...
0
votes
2answers
58 views

Manage virtual machines of different virtualization engines uniformly [closed]

I have several VMs hosted by VMware and several VMs hosted by HyperV. I'm wondering if there is any application/library/API that allows to treat these VMs in a uniform way not depending on ...
0
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1answer
26 views

Ubuntu Subdomains on the Fly

We're a trying to accomplish the following on a Ubuntu Server 13.04 installation. We host SaaS apps for customers are are currently moving off shared hosting environments due to limitations with ...
2
votes
1answer
35 views

Saving the State of an Application using App-V or some other type of Virtualization Technology

I have an application that I would like to be able to create "snapshots" of (sort of like you might do with a virtual machine). Basically I would like to be able to allow the user to do a bunch of ...
5
votes
4answers
736 views

What are the performance implications of running VMs on a ZFS host?

I'm considering migrating from ext3 to ZFS for data storage on my Debian Linux host, using ZFS on Linux. One killer feature of ZFS that I really want is its data integrity guarantees. The ability to ...
0
votes
1answer
25 views

Is there a way to make an image of a single volume at a point in time?

I have a Windows Server 2008 R2 box that I need to be able to re-image at any given point. With VMWare, is it possibly to create a snapshot or image of only a specific drive at a point in time? Also, ...
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3answers
48 views

VM Connected to a Domain

I'm working with an automated tool that deploys VMs to center. It is setup within the customspec to be connected to a domain [windows]. After the VM is clone, we get a success state from VMWare that ...
2
votes
1answer
485 views

How to (properly) back up a live QEMU/KVM VM?

I'm currently engineering a backup solution for KVM VM's as an additional measure to traditional backups. Unfortunately, all currently (August 2013) existing solutions I came across so far either: ...
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0answers
135 views

Hyper-V: Ubuntu guests running out of memory

We appear to have a problem with Ubuntu guests running out of memory. We have several on 12.04 (LTS) and one on 13.04 and seem to have the same problem. It takes around 30 days from restart to ...
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votes
1answer
274 views

We have Solaris 10 VM in KVM (ProxmoxVE) how to check if Solaris is using all cores?

I'm trying to figure out is VM Solaris 10 (which is virtualized with KVM on ProxmoxVE) using all allocated CPUs? Host HW is Dell poweredge r720. And find a way how to check that for example gzip on ...
1
vote
1answer
280 views

How AWS does GPU virtualization? [closed]

What kind of technology is Amazon using for GPU virtualization ? Can multiple VMs on an AWS GPU instance concurrently share GPU and have acceleration for their CUDA/ openCL programs ? I know following ...
6
votes
1answer
144 views

Installing vmware/xenserver on a linux operating system?

We're currently in the process of setting up a server here in a research environment. It would be ideal to use VMware ESXi, but (and I apologise if I get this completely wrong, I'm somewhat new to ...
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0answers
78 views

Citrix XenServer maximum guest vMemory / vCPU

I am trying to find out what is maximum virtual memory available to VM with Xen Hypervisor. Virtualization Matrix and Xen User Guide tells that 128 GB is maximum vmemory for guest but is it true? Has ...
0
votes
1answer
308 views

Proposed Network Design for DMZ with Server Virtualization?

I have the following proposed network design that I will be implementing. All connection for server and PCs are connected through an All in One cisco firewall Only one high end server will be used. ...
0
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2answers
325 views

Network design vm virtualization in small office [closed]

I just recently bought a 16gb ram, Intel i7 quad core Mac mini to be used as the central point of entry to my network and am looking for advice on how to design a network suitable for a small office. ...
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0answers
15 views

VMware VDI location-based login

is there a way to restrict login to a specific VDI pool/machine from a specific zero-client? (i have a lab with zero-clients and i want just the teacher's machine to be able to login to a specific ...
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votes
1answer
49 views

Can SCOM be used to monitor physical servers as well as virtual? [closed]

Doing some research for a proposal and need to know if the Microsoft SCOM product is capable of monitoring physical servers. I have already seen it used in a VM environment with AWS, but need to know ...
37
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2answers
1k views

vSphere education - What are the downsides of configuring VMs with *too* much RAM?

VMware memory management seems to be a tricky balancing act. With cluster RAM, Resource Pools, VMware's management techniques (TPS, ballooning, host swapping), in-guest RAM utilization, swapping, ...
0
votes
1answer
693 views

XenCenter cannot connect to XenServer

I am trying to establish a connection using XenCenter 6.0 to a server where XenServer 6.0 is installed, but it gives me the following error message: Unable to connect to server '192.xxx.xxx.xxx'. ...
0
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0answers
82 views

OpenVZ container not reachable after host reboot

I started having a rather strange problem lately. After rebooting the OpenVZ host system all Containers seem to be up and running, but some of them (not all) are unreachable from both the host system ...
2
votes
1answer
88 views

xm re-create configuration file from existing vm

I have Xen set up and working quite nicely. When I reboot and use: xm list I get this output: Name ID Mem VCPUs State Time(s) Domain-0 ...
1
vote
1answer
188 views

Private networks with SCVMM 2012 SP1 and Hyper-V

In my lab I have two hyper-v host running Windows 2012 server. For lab and test purposes I want to have private networks that are available on both hosts, and where the VMs on those networks are able ...
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0answers
432 views

How to config libvirt network setting about disabling dnsmasq “except-interface=lo”?

Here is the thing. My VMs run with libvirt and use default network libvirt-provide, and I've mad each VM registers its hostname to dnsmasq set by libvirt. so I want to look up its hostname for ...
2
votes
1answer
174 views

SAN: is it better to have separate LUNs for operating system and data of virtual machines? [closed]

We have an iSCSI SAN that will be used as backing store for virtual machines. We use Xen and will directly present the LUNs as block devices of VMs (so there is no file system with files on it for ...
1
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1answer
934 views

Can I use Vagrant for Production Environments [closed]

This week I start playing with Vagrant and Docker. And I'm really excited with all the concept. There is anyone using Vagrant in Production Environments or is just used to maintain images of ...
5
votes
2answers
3k views

Why does increasing logical processors in Hyper-V for virtual machine increase performance.

To my understanding, virtual machines (assuming relative weight is even) get an equal share of the processor. When the VM is given some processing time, it shouldn't matter if the VM is seeing a ...
-1
votes
1answer
71 views

How to interpret Task Manager in a virtualized environment?

I'm wondering about how Task Manager calculates CPU utilization in a virtualized environment. I can think of two ways: Count the number of cycles used and divide by the number of cycles available, ...
-3
votes
1answer
84 views

Virtual router for virtualisation [closed]

I'm currently setting up a virtual lab at home for general server / network testing using Hyper-V. At present I have a virtual network adapter that is linked to my Physical network adapter so that the ...
0
votes
1answer
392 views

How to change disk controller of a VM running on XenServer 6.2?

I'm running a installation of XenServer 6.2 where I've imported a .ova. The .ova is an image of a linux-system from a previous vmware esxi environment. The problem is that since the linux-image ...
0
votes
1answer
2k views

Unable to ping between host machines and guest vms running on Vmware

In order to learn a bit about system administration, I've installed a Centos vm using Vmware on my local machine running Windows 7. Everything seems to be working fine since I can access the internet ...
0
votes
1answer
173 views

deleting an inactive datastore under vSphere - dataloss?

So I had an inactive datastore listed on a blade server (I see the other disks on the internal SAS controller which is in an external diskshelf) besides my regular one. I deleted it, got the error ...
1
vote
2answers
467 views

Install an Oracle DB in a linux VM

I am trying to set up an Oracle database server (at the moment just for testing purposes) in a virtual machine. The setup I'm using: VirtualBox Network adapter in NAT mode (redirecting ports ...
1
vote
2answers
87 views

Access virtual box on remote server

I have a remote server (ubuntu) with 1 public IP. I've installed headless VirtualBox and deployed machine. For now I can access it by VirtualBox's VRDE Server running on server, but what i need is ...
1
vote
1answer
317 views

Do I need to / should I enable “Virtualization Technology” for Hyper-V in Server 2012?

I'm setting up some new servers to be Hyper-V hosts in Server 2012. I noticed on first boot that the task manager shows the following in the CPU section: If I enable "Virtualization Technology" in ...
0
votes
1answer
273 views

Signaling KVM/QEMU VM to quiesce, preparing for live backup

Assume a KVM/QEMU VM, which uses qcow/qcow2 as the image format for virtual disks. Backup is (to be) done on the VM host. As far as my current understanding goes is that while we can create backups ...
1
vote
2answers
1k views

How do I configure Xen's virtualization of interfaces (eth0 to peth0)?

I installed Xen a while ago but had not yet booted up with the hypervisor. Well I did yesterday and all hell broke loose. I completely lost internet connectivity on my server because of Xen. When I ...
2
votes
1answer
203 views

Can I install a Windows Server 2012 virtual server using Hyper-V on Windows Server 2012 with the same exact product key?

I've read everything I can find online, but I cannot find a simple answer to this question. I have Windows Server 2012 Standard installed using a volume license product key. The official product ...
2
votes
1answer
119 views

Is it possible to limit/throttle page faults with LXC container virtualization?

It's possible to limit a container to 512MB of RAM and 4GB of swap. However, if that container uses memory frequently that has been swapped out wouldn't it dominate the the IO resources of the storage ...
2
votes
5answers
139 views

Provide iSCSI storage for Virtual Environments through host or directly to guests?

We are planning to place a HP MSA P2000 with two FC/iSCSI controllers in our network. We have two options to provide more storage to Virtual Machines (We are running Hyper-V): A) Add iSCSI targets ...
3
votes
2answers
765 views

How to edit/add file in VMDK

I have a VMDK (with several partitions) file which I need to modify. It is not attached to any particular virtual machine. I've tried using vmware-mount (from the VDDK toolset) in on Ubuntu server ...
-1
votes
1answer
84 views

setting IP address from different subnet to virtual machines

I have only 1 NIC on my server and the IP address of it is 62.X.X.107. And the gateway I've received from the datacenter is 62.X.X.1. I have bought 2 more IP addresses from the datacenter to use them ...
1
vote
1answer
261 views

Upgrading VMware templates monthly. Automating this process

I am a programmer on my school's internship. At my company, at the end of each month, we have this VMware product which lets you make virtual machines. You can deploy these virtual machines using ...
0
votes
2answers
124 views

Very fast virtual machine rollback [closed]

Summary: Is there a VM that's optimized for fast in-memory rollback to a previous state? I've tried in vain on StackOverflow and SuperUser — maybe this is the right place to ask this question. :) ...
0
votes
1answer
63 views

EC2-like virtualisation platform with non-RDP access

I'm looking into setting up a few small VMs. The trouble is the software I intend to install on them (Cisco VPN Client) blocks out networking (other than to the target VPN destination...) with no ...
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votes
1answer
72 views

Seeking advice: To virtualize or not? [closed]

I am a newbie system admin and I'm going to be administering a server for our intranet. I come from a PHP/Ruby/Python developer background. This server will serve as the host for several "technology ...
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votes
2answers
253 views

Windows Server Configuration with Exchange, SQL Express and IIS [closed]

In our small office we are currently running a standalone tower server with WS 2008 R2, SQL Express and IIS. This server is going to be decommissioned and scrapped as its old and very noisy. We are ...
3
votes
2answers
1k views

“vagrant up” fails with “NS_ERROR_CALL_FAILED” error [closed]

I am following the basic "Getting Started" guide: http://docs.vagrantup.com/v2/getting-started/index.html I ran vagrant init <etc> followed by vagrant up, but it fails with ...
1
vote
1answer
85 views

How much memory should I allocate for host OS when virtualizing [duplicate]

I would like to buy a dedicated server and virtualize it. Details: Host OS Ubuntu 12.04 server OS Setting up 3 VMs. 2 serving web applicaitons with php/Mysql + nginx and 1 running bugzilla. With ...
2
votes
2answers
135 views

Latency between IIS and SQL on same physical, two VMs

I have a single server (2x4 core CPUs, 32GB ram), that is a Windows Server 2012 Hyper V host, and it hosts two guest VMs (also Windows Server 2012 instances). One of them is a web server, the other is ...