The tag has no wiki summary.

learn more… | top users | synonyms

10
votes
10answers
4k views

Run virtual machines without a host

I know that I can have virtualization software (Virtual Box, Virtual PC) running on Ubuntu or Windows and run guest operating systems in it. Is it possible to run virtual machines without a host OS? ...
1
vote
5answers
1k views

Adding RAM to a virtual machine without restart

Could anyone suggest me a hypervisor that permits adding RAM to a running virtual machine without restarting the guest OS. Is this even possible? Can this be done on xen? I have never found any ...
0
votes
0answers
35 views

Xen blktap qcow/qcow2 not connecting

I have a similar issue as posted here, but with qcow/qcow2 images: Xen 4.1 host (dom0) with blktap disks ("tap:aio:") not connecting I tried Xen 4.1 on Ubuntu 12.04.04 precise, with both ...
-3
votes
1answer
49 views

Is it possible to use planet scale load-balanced virtulisation? [closed]

there are more and more implementations of distributed-virtualisation. A common one is Microsoft SCVMM. Currently, such things are kept inside LANs, and a san or fiber-channel system is used for ...
0
votes
1answer
90 views

How does migrating a running Virtual-Machine from one Hypervisor to another actually work?

How does migrating a running Virtual-Machine from one Hypervisor to another in a cloud environment actually work? I know that it is possible and that this feature exists. But what does actually ...
1
vote
1answer
86 views

kvm hypervisor kernel panic

My kvm hypervisor had been running with 20+ vps guests for a few months. But a few days ago it went to kernel panic. There were no abnormal operation that I found would cause the problem, except that ...
2
votes
3answers
2k views

VMware or Xen support for AIX on pSeries architecture

I tried to find an explicit confirmation on VMware website if there is any chance we could virtualize AIX running on pSeriese architecture (P5, P6 and P7), but in vain. so far we have only one ...
2
votes
4answers
731 views

Why is it possible to deploy a hypervisor within a hypervisor?

Why is that a hypervisor, which alledgedly needs to be on physical hardware, can be deployed within a VM? For example, XenServer (the actual hypervisor) can be deployed in an ESX VM? Why is this ...
1
vote
1answer
91 views

backup files to a remote server with multiple versions using rsync hardlink option

To use rsync hard link option to backup files remotely so that remote backup server could keep multiple versions of the backups, both the link-dest directory and the target directory have to be on the ...
1
vote
3answers
57 views

Is it possible to Migrate Live VMs from a Windows 2012 Hyper-V Cluster to a different 2012 R2 Cluster?

At the moment I'm in a bit of dilemma because I know that Windows 2012 supports "Shared Nothing Live Migration" but recently I got to know that this feature is available for stand alone Hyper-V ...
1
vote
2answers
286 views

vSphere - Allocate 100% CPU to 1 VM / 88% efficiency [closed]

EDIT 2: My application benefits from hyper-threading A. Yes I know what the technology is and what it does B. Yes I know the difference between a physical core and a logical one C. Yes turning HT ...
1
vote
1answer
276 views

Vagrant support for Type 1 Hypervisor

I need to be able to spin up VMs every now and again so that I can have a space to build the latest iteration from my project's 'dev' branch (using chef), run the configuration scripts, and make sure ...
0
votes
0answers
73 views

Xen dom0 rebooting

I am using Xen version 3.0.3 and running 4 domU's on this.(guest OS is windows) suddenly my dom0 reboots for no reason.This is happening frequently for last 2 days. I checked xend and system logs but ...
9
votes
4answers
1k views

Can a virtual machine (VM) “hack” another VM running on the same physical machine?

Questions: if a VM is corrupted (hacked), what do I risk on others VMs running on the same physical machine? What kind of security issues is there between VMs running on the same physical host? Is ...
0
votes
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 ...
-4
votes
5answers
4k views

Newbie to ESXi, Can I run my VM on a laptop with ESXi and get to VM desktops?

Looking for a solution to use a hypervisor that allows access to the VMs that are running on itself. Basically, I would like to setup a laptop that can run 10 to 15 VMs that are already built, but to ...
0
votes
0answers
93 views

how to install 32 bit PVM on 64 bit XEN Hypervisor

I have a 64 Bit Xen on Ubuntu 10.04, I have tried installing a 32 bit PVM as follows: virt-install -p --arch=i386 --name vm --vcpus 1 --ram 2048 --disk /dev/MYLVMREPO/LVM - location ...
0
votes
1answer
686 views

Windows Server 2008 R2 Hyper-V VM BSOD after 1min 30seconds even before logging in?

I have a Hyper-V VM running Windows Server 2008 R2 (Host is also WinSrv 2008 R2) that was working perfectly. It has now started BSOD before I even login. On testing if I boot normally and login the vm ...
0
votes
0answers
57 views

Xen Debian VM and NFS

I have 2 servers in a pool running a single VM on each server. I just got xencenter running so I am managing through that. I want to have a shared storage (NFS) between the two of them, so that if one ...
0
votes
1answer
308 views

Hyper-V vs KVM for running Ubuntu + Windows

I am currently planning to set up a server for virtualisation. It will be running about half Windows 2012 servers and half Ubuntu. Would it be better to use hyper-v or KVM as the hypervisor as I am ...
5
votes
2answers
370 views

What are the tradeoffs between using hypervisor- vs. storage-array-based snapshots as backup sources?

Suppose you have some virtual machines (running in eg. ESXi) that are stored on an iSCSI storage array (eg. EqualLogic PS4110). Now suppose you want to set up a backup and restore regime that looks ...
2
votes
3answers
179 views

Moving system from ESXi to Hyper-V

I have a problem with moving a system from ESXi to Hyper-V. The system on ESXi has got 100GB allocated space on HDD. The system is made from an image file(size about 6GB). The machine hosting ...
0
votes
1answer
99 views

first time building Hyper V hardware requirements

I intend to build a white-box that will be running a host server 2008 with hyper V and have the guest VMs on a separate SSD drive. Is it better (in terms of to run the the 2008 server host on an ...
2
votes
1answer
691 views

Distributing entropy to virtual machines

I'm interested in generating secret keys for SSL on virtual machines using true randomness. By true randomness I mean the same level of entropy that can be generated by UNIX's dev/random and entropy ...
1
vote
1answer
93 views

Xen DomU (Guest) OS on different hard disk to Dom0?

I have followed the guide provided on the Ubuntu Community Documentation for Xen and I have successfully installed eight guest OS's on a different machine. In the guide, I use the command: sudo ...
1
vote
1answer
604 views

Huge packet loss Hyper-V when guest is running with R410 and Broadcom BCM5716C NetXtreme II

I am running a domain controller, that also has a Hyper-V role installed. Within the Hyper-V, I have a legacy Windows 2008 SBS that we will eventually retire. When the guest OS is shutdown network ...
4
votes
3answers
22k 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 ...
-1
votes
1answer
105 views

Where can I learn fundamentals about hypervisors in context of other hardware virtualization solutions? [closed]

I am interested in learning more about hardware virtualization, with a specific focus on hypervisors. I am competent to manage a server and would be able to configure an environment to work using ...
1
vote
1answer
91 views

What are the contraindications for using Hyper-V with Windows 2012 Server?

Background: I am researching several Virtual Machine Manager solutions. They are being considered for use in separating configuration for multiple development and testing environments. The decision ...
1
vote
0answers
121 views

How to make all of my IPs works in HyperVM XEN?

I've installed HyperVM on CentOS 5.8 final to make XEN VPS. I have 5 IPs, and added them to an IPPool. They are from *.123 to *.126. But when I add Virtual machines, just the first one (which indicate ...
2
votes
3answers
759 views

Hypervisors that support AIX as a guest OS?

I am trying to find out what hypervisors are out there that can support running AIX guests. I know that IBM PowerVM can do it, but I would like to explore other options. There is also AIX WPARs ...
3
votes
4answers
615 views

What is the Difference between T1 and T2 Hypervisors?

What is the difference between t1 and t2 hypervisors? The Wikipedia article explains it, but I am not quite getting it. Apparently both require some sort of host system to run in. Does anybody know ...
0
votes
1answer
223 views

Security risk of XEN Server Free with public ip? [closed]

I am having a dedicated machine,from some hosting company and i have KVM access to it i wish to virtualize it using XEN's bare metal hyperviosr,(XEN server Free). Will it be possible to manage VM's ...
2
votes
4answers
122 views

Hypervisor for mixed client and server OSes [closed]

I need to replace three old boxes I use for development, running Linux, Win Server and Win XP. Instead of purchasing three new boxes I am thinking of purchasing a single box and virtualizing the OSes. ...
1
vote
2answers
135 views

Build parallel processing grid from 32-bit desktops

I am running simulation on my laptop(Core 2 Duo 1.8Ghz with 4GB RAM running windows 7) which is taking very long time. I have a couple of unused 32-bit (Core 2 Duo 1.8Ghz with 4GB RAM) desktops. I ...
4
votes
1answer
2k views

Should we use irqbalance in a VMware guest?

Should we use irqbalance in a VMware guest? I'm very sure this benefits bare-metal installations on multi-processor systems. I'm rather unsure if this benefits VMware guests, even VMware ...
0
votes
1answer
170 views

Hyper-V Core Server 2008 R2 Powershell-Script

I have a problem executing PowerShell-Scripts under a Server-Core System. The command show-hypervmenu which gives me a powershell-menu for configuring VM's. Every time I try to delete or create or ...
5
votes
3answers
590 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 ...
1
vote
2answers
3k views

Web client in vSphere hypervisor (free ESXi) 5.0.0 missing

Just installed the hypervisor and it is up and running fine (in Test mode). Using the corresponding version of vSphere Client works fine too. Now sites like this show a Web Client that I just cannot ...
1
vote
0answers
563 views

64 bit HVM guest freezes while booting on Debian Lenny 64 bit Xen hypervisor

I'm trying to create an x86 64 bit guest machine on an old Debian Lenny x86 64 bit hypervisor using HVM. The physical CPU is a first generation Intel i7 with VT-x support. Xen recognizes the VT-x ...
6
votes
4answers
879 views

Is Hyper-V a real hypervisor

According to Wikipedia, there are Hyper-V and Hyper-V server. Ok... Hyper-V server doesn't need an OS to run, so it is true Hypervisor. But what about Hyper-V inside windows2008, is it a "type 2" ?
0
votes
1answer
240 views

Building Own Hypervisor Hardware, And Looking For A Parts List [closed]

We are thinking of building our own hypervisor hardware (in high volumes) for our virtualized hosting platform, instead of buying from Dell. Our model is small virtual machines 256MB of memory, and ...
1
vote
1answer
102 views

How to run a hypervisor-type-app in non-headless mode? [closed]

I'd like to figure out how to do the following: Run, as a root system\OS, something like Proxmox where a light-weight OS (Linux) is booted and a VM server resides within. (Proxmox claims that the ...
2
votes
2answers
621 views

Hyper-V processors

I'm running a HP ProLiant DL380G6 with 2x Intel® Xeon® E5520 Quad Core Processor 2.26 GHz and 12GB of ram. I got Hyper-V installed and 3 VMs for now. If I open up task manager I can see 16 cores (I'm ...
4
votes
4answers
1k views

Which RAID Level Should We Run For Virtual Machine Storage

We just ordered a server which we are going to use as storage for our virtual machine environment. Basically it will work as a block level storage device running iSCSI to each hypervisor. The server ...
2
votes
3answers
149 views

Checklist for relocating Linux server

I've been preparing a new Linux server in the office to be used as a VM host using Proxmox. Now that the basics are done we're moving it to our ISPs server room. I'd like to make sure I haven't ...
0
votes
1answer
515 views

How to investigate frequent but dissimilar data-loss events

I have a Xen domU provided by a third party, running Ubuntu (10.04, server edition, stock -server kernel). This server runs Dovecot and Exim4, with mail stored in Maildirs, and runs a fairly typical ...
0
votes
3answers
594 views

VMware vSphere Hypervisor IP question

I have a VMware vSphere Hypervisor server with two virtual machines running ubuntu, they are just test machines while I learn more about virtualisation and servers in general. I would like the ...
3
votes
1answer
211 views

Can i install Xen Hypervisor on a dedicated server that is already in use

I have a dedicated server, currently i sell shared hosting on this server... Now i want to sell VPS also on my server. Is there a way i can sell VPS? Can i use Xen Hypervisor,will it disturb my shared ...
1
vote
2answers
4k views

What's the best way to make a copy of a VM and then rename it to save into your inventory from vSphere client?

I've had trouble exporting VMs, renaming them and importing them back into my inventory. What is the best way to do this inside vSphere Client? I am using vSphere Hypervisor version 4.1. Thanks.