Microsoft Hyper-V is a hypervisor-based virtualization system for x86-64 systems. Hyper-V exists in two variants: as a stand-alone product called Microsoft Hyper-V Server 2008, and as an installable role in Windows Server 2008 R2 and Windows Server 2008 (the former containing the later release of ...

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Force disk cache even if guest uses direct i/o

Have IBM db2 on Rhel on Hyper-V on Windows Server. The *.vhdx file is on CSV. e.g. C:\ClusterStorage\volume1\hyper-v\oktest-lb1\oktest-lb1.vhdx. db2 uses O_DIRECT flag (uncached i/o) for its database ...
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98 views

Hyper-V VLAN with static IP

Trying to setup/simulate Hadoop cluster locally via multiple (hyper-v) VMs. I'm using hortonworks sandbox image for hyper-v which runs centos linux. I can hit the vm, if I use an internal switch and ...
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1answer
1k views

Veeam Hyper-V backup error: Microsoft Hyper-V VSS Writer VSS_WS_FAILED_AT_POST_SNAPSHOT

I have an error from a Veeam Hyper-V backup of a Virtual Machine in a Hyper-V host: Unable to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Veeam application-aware processing). Details: ...
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1answer
37 views

Virtualized IIS 7 Intranet page is slow when querying against SQL database

OK… I’ve been tasked to figure out why an intranet site is running slow for a small to medium sized company (less than 200 people). After three days of looking on the web. I’ve decided to post what ...
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89 views

Setup server hosting hyper-v as a router

I have a windows 2012 server hosting several windows VMs by hyper-V. As I was building this infrastructure at home all VMs got IPs assigned from my home router (DHCP). So both hyper-v manager and VMs ...
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2answers
108 views

Does a dynamic VHD automatically add space to its local drives?

OK, this might be a stupid question but I'm new to this. Dealing with Hyper-V server 2008. So let's say I got a dyamic VHD which has a 70gb max when i inspect it in Hyper-V, and then the C: drive of ...
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109 views

Shrinking and extending disks on Server while running?

So I have a server with Hyper-V and a Drive C: (OS) and D. Drive D stores all of the VHDs that I run. Drive C shows up as Disk 0, and D as Disk 1 under Disk Management respectively. Now Drive D gets ...
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1answer
286 views

2012R2 Hyper-v host CentOS7 guest slow network speed over external network

I have a Hyper-V host on win2012R2 (Version 6.3.9600) with two gigabit network adapters, one of them connecting to a gigabit router (the another one is currently out of use because lack of a gigabit ...
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41 views

Can I backup a VHD to an identical system and boot in case of hardware failure on the original?

Pretty much all in the title. I'm already using Hyperoo to backup the vhd file to a identical server and was wondering if it would be possible to add the vhd file to a Hyper-V virtual machine and ...
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1answer
29 views

Refreshing VM with limited Disk SPace

I have a Hyper-V machine that crashed. I am trying to refresh it but the disk is too small when I load the disk.ISO in. I tried to expand it but I still get the screen. Is there a way to add the added ...
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3answers
682 views

Can we build a Hyper V failover cluster without a SAN or other shared storage?

I have a question about Hyper-V Failover Cluster. I have 2 server Hyper-V and want to use a failover cluster. As far as I know, I need a SAN server for that, so do we need it in here?
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2answers
520 views

Hyper-V & SSD Best Performance

I'm building a Hyper-V host using Windows Server 2012. It will be hosting 3 Hyper-V images. I have a SSD and a larger standard HD. I cannot fit everything on the SSD. Performance wise, will I be ...
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0answers
263 views

Unresponsive Server 2012, may be because of Hyper-V

there is a setup: ProLiant, Xeon, 16Gb on the host, 3 VMs (2 servers 2012 + Win7). Not all three VMs work simultaneously all the time. The problem is that sometimes host (and mostly all guests) ...
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82 views

String domain on RDP file not working

I am about to flash 80 HP T620 Thin Clients (TC) which will only be used to launch an RDP file so users can connect to their virtual machines on our Hyper-V environment. In the end, the TCs will be ...
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62 views

Hyper-V doesn't recognize when a DVD is swapped

I'm running a Windows Server 2012 Host with five Windows Server 2012 guests. All have the latest updates installed. Whenever I add the Host's DVD drive to one of the guests, the guest will recognize ...
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1answer
54 views

Hyper-V Server Deployment - adapter configuration

I'm sure this question will have been asked somewhere before. In fact I'm sure I've read about it before too, but I can find any resources to help me along my way. What I'm trying to do is deploy a ...
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1answer
756 views

Hyper-V VHDx Compacting & SIzing Issue - No Minimum Size, Unable to Shrink

Trying to recover ~450GB unallocated space from a VHDx total filesize. Thanks for taking a look at this issue: Hyper-V Server 2012. Dynamic VHDx (we'll call it disk2.vhdx) with a file size of 1.5TB ...
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1answer
591 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 ...
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2answers
171 views

Why does a Hyper-V, Windows Server 2008 R2 server occasionally stall?

I'm running a Virtual Machine server on Hyper-V that stalls about once a week, effectively rendering certain services it is running to be useless. -The physical host machine CPU: 6-core Xeon E5-...
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2answers
282 views

How to open Hyper-V Manager in Hyper-V Server 2012?

In Windows Server 2012, to open Hyper-V Manager, in Server Manager I would just go Tools >> Hyper-V Manager. How do I open Hyper-V Manager in Hyper-V Server 2012? I want to allow replication to this ...
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1answer
59 views

Hyper V and NAT Redirect IP on different VM

I have 2 IPs public (but one physical network port) and i want redirect IP public 1 on my VM 1 and, IP public 2 on my VM 2 But when i check my NAT configuration i can just redirect port on my interne ...
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3k 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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1answer
213 views

converting physical windows 2003 server through disk to vhd tool to hyper-v server

i am trying to do P2V conversion through disk to vhd tool. conversion is successful but after conversion when i attach the disk c: drive or d: drive its shows additional drives in disk management same ...
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207 views

powershell command to get a list of all the snapshot in vmm (hyper-v)

i am using below script to get snapshot which are associated with my particular VM, but i am getting only recent snapshot information , can someone correct me in below script - $vmcheck = Get-VM -...
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1answer
174 views

Hyper-V Guest data encryption

I have a new requirement to encrypt the data inside an sql database while it is at rest. So far I've looked at Bitlocker (see below), and other commercial products (I won't name because I'm not ...
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1answer
485 views

What is the correct way to add license keys to Hyper-V servers and guests?

I have a Hyper-V server and I have three 'Windows Server 2012 R2 Standard' licenses (ROK, not VL). I am wondering with what keys must I activate what servers with? Is the following the correct method? ...
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1answer
280 views

Hyper-V disable internal firewall

How can I disable a firewall on my internal network? Problem I have a Hyper-V on a Windows Server 2012 R2 with one VM, when I disable the firewall I can get internet on my VM, but when I turn on ...
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1answer
27 views

Replicate Partition Over Network

Is there a way, in Windows Server 2012 to replicate two same-size partitions over the network in real-time, preferably at driver level (not user-land)? I am asking for two Hyper-V servers. There is ...
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2answers
4k views

The application encountered an error while attempting to change the state of 'WindowsServer2008'

I've had a Hyper-V running Windows Server 2008 for about two years. Today I did a Save on the VM in the Hyper-V Manager and then restarted my computer. When computer restarted I went to Start this VM ...
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2answers
393 views

Hyper-V guest loses network access when virtual switch port is in trunk mode

I have guest VM on a Windows Server 2012 R2 machine running Hyper-V. Currently, the guest is using the native vlan (vlan ID 1). I can communicate with the guest from the host and from the network. ...
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1answer
224 views

WDS with Domain Admin Credentials Can't Join Windows 7 to Domain

I have a WDS server configured on Windows Server 2012 R2 running as a Hyper-V guest OS ontop of a Windows Server 2012 R2 physical server. I've installed and configured WDS and Microsoft Deployment ...
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51 views

Debian 6.0.10 on Hyper-V

I have a vendor supplied appliance that was developed for V-Sphere, that I am trying to convert to run on HyperV. So far, I have converted the v-Sphere virtual Hard drive to a HyperV one, and have ...
2
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3answers
2k views

What hotfixes/updates does a new 2012 R2 Hyper-V server need?

I'm building several new 2012 r2 Hyper-V servers. One thing that I've read over and over again is that there are A LOT of hotfixes that i need to install on top of the regular OS updates Microsoft ...
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1answer
55 views

Hyper-V VMs no longer working with status Paused-Critical

We have a VM server which has been working well for years now. I was using a VM from it just 3 weeks ago. Today I look and see all VMs on it are set to status "paused-critical" In the event log ...
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1answer
805 views

Moving BIN files from C:\ drive - Hyper-v 2012

A lot of VMs have been created on a Server 2012 Hyper-V host and as a result the BIN files have started to encroach on the C:\ drive space. I am guessing during their creation they have not looked to ...
2
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1answer
2k views

Do I need to use Sysprep to clone VMs on my personal lab? [closed]

I’m a programmer and I’m trying to build up my personal Lab. I have a machine with Hyper-V Standalone Server 2012 R2 installed. I need to create VMs which will be used for testing applications, ...
2
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1answer
139 views

Hyper-V performance and the Save State BIN file

The Hypothetical Scenario. Our small business server has 2x 400GB SSDs and 6 slower 7,200rpm SAS drives. We create a RAID1 array for the SSDs (henceforth Fast Disk) and a RAID10 array for the 6x SAS ...
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1answer
198 views

MS Data protection manager restore files from linux vhdx

We are backing up our few linux VM servers (Centos 6.6 with VSS , Online backup) in Hyper-V 2012 R2 with Microsoft Data Protection Manager 2012 R2. Its backing with Online method. In Windows VMs ...
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616 views

Windows Server 2012 - Hyper-v - VMs experiences slow connectivity on some hours

I have installed hyper-v role on 2012R2. After creating our linux and windows virtual machines we realized that connectivity between VMs are very slow. We fixed it by installing HYPER-V LINUX ...
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1answer
105 views

Can VMs offload checksum calculations to the physical NIC when I disable checksum offload on the host?

Due to random issues during backup, we were advised to disable checksum offload on all physical and virtual machines involved in the backup procedure. I started by disabling the feature on all Hyper-...
2
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1answer
276 views

remote Powershell script Scheduled task

I am having trouble running a Powershell script as a scheduled task. The script remotely logs into two Hyper-V hosts, queries the replication status and emails the result back to me. The script works ...
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1answer
95 views

Task Scheduled Powershell Script Not Shutting Down machine

I have a task running on a Hyper-V server setup as such: schtasks /CREATE /TN AutoShutdown /RU "SYSTEM" /TR "Powershell \"C:\AutoShutdown.ps1\"" /SC ONSTART It runs properly (as far as I can tell) ...
2
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1answer
385 views

Link-local address on Hyper-V host

I've thrown myself into learning Hyper-V and Server 2012 over the past week or so, and I'm working on setting up a virtualized WDS/MDT server using Hyper-V. I'm having an issue managing/understanding ...
2
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1answer
643 views

Install RSAT-Hyper-V-tools fails on Windows Server 2012 R2 Server Core

When I try to install Rsat-Hyper-v-tools with powershell command: add-windowsfeature rsat-hyper-v-tools -includeAllSubFeature It fails with error saying that: The source files could not be ...
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1answer
97 views

How was DC restored in windows 2008 before windows 2012 VM generation ID?

Windows server 2012 got this new thing called "VM generation ID" which protects DC restoration from snapshots so it doesn't impair the system (getting new invocation ID and requesting new RID pool etc....
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0answers
47 views

HyperV - responsive VMs

I'm new to Hyper-V. We have provisioned some good server hardware (12 CPU cores (24 vCPUs), 128GB RAM - for future growth) and imported 6 existing Windows 2003/2008 servers all of which host websites. ...
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237 views

Hyper-V, Subnet Masks, External IP Addresses, Hetzner [closed]

I am pretty new to this so I am going to try and explain this as best as I can. All Servers I have dealt with in the past have always had an internal IP address, the external access has always been at ...
2
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0answers
146 views

Hyper-V Failing to create new VM with error 0x80070531

Running Windows 2012 R2 Datacenter, with Hyper-V role installed, domain joined, domain account is both a local admin and a hyper-v admin. If I try to create a new virtual machine (either via UI, or ...
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2answers
113 views

Cannot gain networking access in CentOS 6.2 installed on Hyper-V

Im trying to test a few pieces of software on a CentOS 6.2 VM installed in Hyper-V on Windows Server 2012 R2. I was able to successfully install CentOS 6.2 in Hyper-V but I am unable to gain access to ...
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1answer
1k views

Hyper-V VM very slow after live migrating to very similar hardware.

I live migrated Windows 2012 R2 Vose from Windows 2012 R2 server to another Windows 2012 R2 server running hyper-v. After the migrate this migrated Vose is running very poorly and uses lot of virtual ...