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Questions tagged [hypervisor]

This is one of many hardware virtualization techniques that allows multiple "guest" operating systems to run concurrently on a "host" computer. Also known as virtual machine manager (VMM).

Hypervisor, also called virtual machine manager (VMM), is one of many hardware virtualization techniques allowing multiple operating systems, termed guests, to run concurrently on a host computer. It is so named because it is conceptually one level higher than a supervisory program. The hypervisor presents to the guest operating systems a virtual operating platform and manages the execution of the guest operating systems. Multiple instances of a variety of operating systems may share the virtualized hardware resources. Hypervisors are very commonly installed on server hardware, with the function of running guest operating systems, that themselves act as servers.

Source: wikipedia

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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" ?
Stef
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Is the gang scheduling employed by VMware a serious drawback?

I was reading some technet articles as well as this one regarding the differences between the way VMware and hyper v doing CPU scheduling. I was wondering if I could get some objective info on this. It would seem that the gang scheduling used by…
red888
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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 there (can you make) a list of those (potential)…
Totor
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What happens when a physical machine fails in a virtual environment?

I'm getting started with virtualization so bear with me. In virtual environments applications run in a hypervisor's layer. So a single physical machine could have many virtual machines on it running multiple applications. So far so good? So what…
Sherif
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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? Thanks in advance. I am not very familiar with…
Webber
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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 checking, I realized that the Broadcom NetXtreme I…
SeanKilleen
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KVM Guest using Physical SATA disk

Is there a way to get my Ubuntu server (running as a guest in KVM) to use one of the hosts SATA disks? I Want it to have exclusive access and I believe there should be a "native" way. I have googled this for some time but found nothing. Sorry if…
Björn T Gustafsson
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How do I remotely manage Hyper-V 2016 standalone via Windows 10?

How do I connect to my Hyper-V 2016 standalone via my Windows 10 laptop? Background: I'm setting this up as a home lab. I've followed a few guides, but I have not yet found a guide/Youtube tutorial that seems to work for the free edition of Hyper-V…
montooner
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BUG CONFIRMED: No performance data for VMXNET3 in ESXi 6.0?

Did ESXi 6.0 completely removed the performance data for VMXNET3 or is there is a way, how can enable throughput logging/graphing for VMXNET3? In ESXi 5.5 the ESXi client showed the network performance data just fine, in the 6.0 I see Network tab in…
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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 virtualized environment. But there's type 2 where a…
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Resize partition to maximum using parted in non-interactive mode

Since using fdisk in this case is fairly complicated due to the fact that the non-interactive usage is probably not possible or at leasr very complicated (using printf), i want to use parted resizepart for resizing a partition to it's maximum…
Eugen Mayer
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VMware ESXi error upon boot "Relocating modules and starting up the kernel"

Coming back from a 4-day weekend, I noticed the A/C had been turned off for the duration of the long weekend and the heat was around 80-82 degrees. The HP ProLiant DL185G5 was running but the system fans were running at full RPMs but the system…
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DRBD as DR: syncing datastores of 2 ESXI hosts, vmdk consistency?

does anyone have experience with using DRBD (protocol C) to sync parts of the datastores of 2 esxi hosts for disaster recovery of selected guests? I have 2-3 guests that should be able to recover from hardware failure of the host in as little time…
mx82
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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 something like this: VMs are quiesced snapshots…
alx9r
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How is live migration of a VM possible/made?

From this article: Virtualization: What is KVM? and other resources, I learned that it is possible to migrate a Live VM from one host to another? Live migration KVM supports live migration, which is the ability to move a running VM between physical…
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