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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Hosting a ZFS server as a virtual guest

I'm still new to ZFS. I've been using Nexenta but I'm thinking of switching to OpenIndiana or Solaris 11 Express. Right now, I'm at a point of considering virtualizing the ZFS server as a guest within ...
32
votes
5answers
10k views

Are VMware ESXi 5 patches cumulative?

This seems basic, but I'm confused about the patching strategy involved with manually updating standalone VMware ESXi hosts. The VMware vSphere blog attempts to explain this, but the actual process is ...
20
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3answers
84k views

How to run VMWare ESX or ESXi in a virtual machine?

Can VMWare ESX or ESXi be installed and used inside a virtual machine? It can be installed inside VMWare Workstation or Server, but then it doesn't work; the main symptoms are: It runs REALLY ...
30
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12answers
57k views

VMware Linux Server — how can you tell if you are a vm or real hardware?

An interesting question. I have logged into a Linux (most likely SuSE) host. Is there some way that I can tell programmatically that I am a VM host or not? Also assume that the vmtools are not ...
49
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2answers
4k 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, ...
21
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6answers
6k views

Can windows domain controller be virtualized?

Just the question on the title. There is any problem? Any experience on this?
13
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2answers
2k views

Enabling hardware virtualisation BIOS; anything to beware?

A lot of recent virtualisation tools can either make use of, or demand, BIOS support (Intel-VT, AMD-V, etc). But in most of the BIOS screens I've seen, it has been disabled by default - sometimes even ...
26
votes
12answers
90k views

How do I know if I'm working on a Virtual Machine or not?

Is there a way to know if the Windows machine I'm working on is virtual or physical? (I'm connecting with RDP to the machine. If it's a virtual machine it is working and handled by VMWare).
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12answers
32k views

Is it possible to setup a virtual machine inside another virtual machine

I have been playing with virtual machines latley, and wondered if I could run a virtual machine inside a virtual machine? Is it possible? Is it practical?
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6answers
3k views

Combine several physical servers into 1 virtual server

The current virtualisation splits one big physical server into smaller virtual servers. But is it possible to combine several physical servers into 1 virtual server ? UPDATE: We have several ...
9
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2answers
4k views

Is it possible to have a 100% secure virtual private server?

I am curious if it is possible to have a VPS that has data on it that is not readable by the hosting provider, but is still usable on the VPS. Obviously there are some things that you could do to ...
3
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2answers
4k 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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3answers
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Do I need to run a NTP server in every VM?

Couldn't the guests somehow inherit the system time of the host ? It seems kind of pointless to run the same daemon to get the same results on the same machine multiple times but I didn't find ...
1
vote
1answer
307 views

Assessment & Planning Toolkit

Is there any free tool assessment & planning for Server Consolidation, Performance counters in open source or free to use.
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8answers
2k views

Virtualization: Guest in guest?

Does it make any sense to run a virtual machine with a "master" guest, and in that master guest run many other guests? Has anyone tested this? Is it even possible? Are there better ways to accomplish ...
5
votes
4answers
9k views

Is it possible to span one huge VM across several physical commodity servers?

Is it possible to span one huge Virtual Machine across several physical commodity servers? Here is our use case: We need to implement a 32-processor db server with 64 GB of RAM We don't have a ...
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2answers
2k views

Set startup order for KVM virtual machines via libvirt?

I have some server applications failing because their virtual machine starts up before the database virtual machines. Anyway to configure libvirt to start them up in a certain order and possible ...
54
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9answers
130k views

Creating a virtual machine in VirtualBox from a physical one

Is there any way to create a virtual machine that you can use in VirtualBox from a physical installation that you have? For instance, if I have Windows XP installed on a physical computer and want to ...
23
votes
5answers
27k views

How to zero fill a virtual disk's free space on windows for better compression?

How to zero fill a virtual disk's free space on windows for better compression? I would like a simple open source tool (or at least free) for that. It should probably write an as big as possible file ...
26
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8answers
5k 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 ...
3
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2answers
12k views

KVM and virtual to physical CPU mapping

I'm a relative late comer to the virtualistion party, so you'll have to forgive me if this seems like an obvious question. If I have a server with 12 cores available, does each KVM guest have access ...
12
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4answers
7k views

What are the limits of running NTP servers in virtual machines?

I want to set up several Stratum 2 time servers on my local network. Virtual machines would certainly be a cheaper way to do this than buying three 1U servers. What limitations would doing so impose? ...
10
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2answers
9k views

How to monitor CPU usage and performance on a Hyper-V server with several VM's

I have a server that is running Windows 2008 64 bit Hyper-V, with 8 gigs of RAM and Intel Xeon X3440 @ 2.53 Ghz, which gives me 8 logical cores in the performance monitor on the host system. I have ...
4
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2answers
669 views

HP DL360p with Intel E5-2630 NUMA Capable?

I couldn't find any information via search to determine this via the Intel or HP website. Can you enable NUMA nodes on this? How can you tell the side of each node if so? Is it always best practice to ...
4
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4answers
7k views

Optimising MSSQL 2008 server inside VMWare ESXi

I normally run my MSSQL servers on dedicated servers, but we've taken on a client who is running their SQL Server inside a VMWare ESXi 4 host, and quite frankly it's running like crap. We have ...
3
votes
2answers
4k views

Can a single Virtual Core on a VM use more then 1 physical core?

I have a server running dual quad core cpu's with hyper threading. We have a Windows 2003 VM and it has a single core. when using prime95 I notice that it tops out at about 2.3Ghz (each Core is 3ghz ...
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6answers
42k views

What range of MAC addresses can I safely use for my virtual machines?

I want to assign my virtual machines MAC addresses so that I can configure DHCP reservations for them so that they always get the same IP address regardless of which host hypervisor they are running ...
12
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3answers
14k views

Snapshot/rollback for libvirt+KVM?

I've recently begun using KVM for my development/test environment on a Linux host system with 8G memory. Prior, I was using VMware Fusion for my virtual environment, but my Macbook only has 2G memory. ...
16
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4answers
15k views

Booting a native Windows install in Virtualbox: is it possible? [closed]

I am looking for something similiar to Bootcamp. Currently, I run Ubuntu Maveric as my primary operating system and run Windows 7 in Virtualbox. For some tasks, however, running Windows virtualized ...
16
votes
2answers
1k views

Can a virtualized machine have the CPU and RAM resources of multiple underlying physical machines?

We are studying implementing some virtualized servers here, but we don't know what will be better suitable for us. Some folks are saying better have two huge servers, and others are saying have like a ...
18
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3answers
3k views

Virtual vs Physical Servers

I'm after a second opinion; and apologies if this has already been answered (point me in the right direction). Different factions within a project I'm on are engaged in a holy war between virtual vs ...
15
votes
7answers
6k views

Is virtualbox good for live server virtualization

I used virtual box before to test OS installation on my own personal computer. I'm not sure if it's suitable for actual virtualization on live servers. I mostly hear about Xen for that. Is virtualbox ...
10
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11answers
2k views

Home Virtualization Server [closed]

I am planning to use a computer to run virtual machines.I have some confusion as to which would be the best choice. VMware server (running ontop some optimized linux) : I tried this, but with an old ...
8
votes
2answers
13k views

Disk shrink does not work on ESXi guests

EHLO everyone! My first post on the StackOverflow network :) We're running some ESXi 5.0/vCenter infrastructure to host mainly Debian 6/amd64 guest systems with ext3 partitions and open-vm-tools ...
4
votes
1answer
674 views

Is it possible to obtain a copy of Amazon Linux for use outside AWS

How difficult (if at all possible) would it be run a copy of Amazon Linux on a private physical server or hypervisor (Virtualbox/KVM) ? (I am thinking something based in a office/home) I realise it ...
8
votes
3answers
2k views

Can Hyper-V run in a virtual machine?

Ok, we all know (or should know) that Microsoft's answer is a plain "NO!". But we also know that recent hypervisors can support nested/recursive virtualization, provided the underlying CPU offers ...
4
votes
5answers
3k views

vmware server end of life, where to go now?

We have some virtual machines on vmware server 2.x running on 64 bit hardware and quite happy with it. As vmware server will no longer be offered we are thinking to migrate to ESXi, which seems is ...
4
votes
5answers
8k views

How to automatically start VM created by virt-manager?

I have created a virtual machine with virt-manager that runs on kvm/qemu. The machine works well when started through virt-manager. However, I would like to be able to start and stop the VM through ...
3
votes
3answers
2k views

Service can't connect to self using public IP, NAT problem

I have a dedicated server from serverloft.eu, but due to some network security I cannot use bridge networking on my server. So I have setup all my IPs to the main eth0, and used NAT to forward trafic ...
5
votes
1answer
1k views

How can I stop Azure from randomly replacing network cards on VMs?

Azure seems to have the habit of randomly changing the hardware configuration of virtual machines, without telling anything to the user. This is of course mentioned in the documentation, although ...
4
votes
2answers
760 views

Desktop virtualization

Is there currently a proper Type 1 "desktop" hypervisor? Either free or not? This is just for tinkering around at home on some beefy Phenom machines. Basically i want to be able to run say 2 OSs on ...
3
votes
8answers
1k views

Remote Desktopping from Windows to Linux

I have set up a Linux VirtualBox Virtual Machine server. From a Windows machine, I can remote desktop to a Windows VM running on that machine, it works great. I can also use VNC to remote to an Ubuntu ...
2
votes
1answer
11k views

Hyper-V VM doesn't boot off SCSI hard drive

I've converted a VMWare VMDK to a VHDX. The guest is a Windows 8.1 VM. When this is attached to a generation-1 Hyper-V VM as an IDE drive, it boots up fine. When the same VHDX is attached to a ...
2
votes
4answers
3k views

Creating VMs (VMware) Automatically

We receive roughly 10 emails a day for new vm creations or take downs and I am wondering if its possible to create a webapp that would allow the customer to pick and choose what they need on this VM ...
2
votes
3answers
13k views

Linux KVM on a Virtualbox

Can we install a KVM machine on a virtualbox machine??? Virtual Machine on a Virtual Machine I get the following error when I issue: $ virt-install –-name kvm_client1 –-ram 256 –-disk ...
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vote
4answers
2k 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 determine the virtualization platform that my VM is running on? (OpenVZ, Xen, KVM, etc?)
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vote
2answers
461 views

ESXi 5.1 crashing

I got a ESXi 5.1 installation which is irregularly crashing with a error output like the following: The server has got the following hardware: Supermicro X8DTN+ Mainboard 2 x Intel XEON E5606 6 x ...
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7answers
1k views

Is our planned backup strategy adequate for my new server insfrastructure?

We're in the process of setting up a new server for migrating the old ones. Basically we'll have a Windows Server (2003 or 2008) running 6+ virtual box servers (Windows and Linux development, ...
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3answers
165 views

15 to 20 developers on VM

Is it possible to run 15 to 20 developers (VS2010, and other supporting software) off of 1 VM server and is there any documentation to support this? I don't know if I'm talking about buying a 4 ...
7
votes
2answers
3k views

KVM to Xen migration

I've recently been appointed to create some VMs for production use, and went gung ho into making a KVM based VM instead of finding out what our production server uses. I've only recently found out ...