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Questions tagged [hyper-v-server-2012-r2]

199 questions
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Is it possible to reclaim unused space on Server 2008r2 VM without downtime?

We have a production server that is used 24/7, running inside Hyper-v. The guest OS is Server 2008 R2. It has a dynamically expanding VHDX and is very close to reaching the maximum size. Is it possible to shrink it without any downtime? I have seen…
user410370
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Error in connecting to HyperV Server

Greetings fellow admins, History, I recently installed Windows HyperV 2012 on HPZ600 Joined the existing windows Active Directory domain, add the computer on to my Debian DNS Server. No Errors. I Installed a Windows Server 2012R2 to Manage the…
monketrip28
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Guest VM showing HIGH memory usage when nothing is using the memory

I have a guest VM setup in my Hyper-V environment that I'm trying to us dynamic memory with. The following settings are being used... Startup RAM: 8192 Minimum RAM: 2048 Maximum RAM: 8192 Memory buffer: 20% Memory weight: Medium on the slider I…
Arvo Bowen
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How does CSV cache behave under memory load?

We're looking at using Microsoft's CSV cache feature in our new Hyper-V 2012 R2 clusters: It's enabled by default, with 512MB allocated to each CSV. The maximum memory that can be assigned is 80%. The recommendation is a maximum allocation of…
john
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Any known fixes for Hyper-V host networking randomly stops responding?

We run several HP DL380 Gen8 servers as Windows 2012 R2 Hyper-V hosts. Randomly, they stop responding on the customer NIC (ie the one connected to the virtual switch). Customers are disconnected from VMs. Luckily we have found that we can get to the…
Trichromic
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Disk IO Performance Difference -- Hyper-V / CSV -- Guest vs Host

I have two different Hyper-V 2012 R2 environments that use iSCSI to connect to their virtual machine storage. While the environments are different (one is all 10 GB whereas the other is mixed 1 GB / 10 GB, one is using an SSD array in RAID 6 whereas…
Jason
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What are the best practices for NIC teaming in Server 2012 R2? Broadcom or Windows software?

I have a Windows 2012 R2 Hyper-V cluster with two Broadcom adapters for my LAN connection. Currently, we have a virtual switch set up with SCVMM, that teams together both NICs using Windows software teaming, and they are set up with Switch…
Alex McKenzie
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Hyper-V 2012 R2 - MPIO config error "Access Denied"

I am in the midst of migrating to a Hyper-V 2012 R2 cluster and am currently configuring the first host to connect to the iSCSI CSV via MPIO. I "think" I have everything working properly but when I try to create a log file to verify via the MPIO…
Steven Gedzyk
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How do I upload an ISO to the Hyper-V data store?

I've just installed Windows Hyper-V Server 2012 R2 and I'd like to put some OS ISOs on the data store. How do I do this? I've configured remote administration so I can connect to the server using Hyper-V Manager, Remote Desktop and Computer…
Greg B
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Cannot remote desktop into a non-domain joined workgroup Windows Hyper-V Server 2012R2

Installed Hyper-V Server 2012R2 on a server. Did NOT join the server to a windows domain. Via sconfig.cmd I configured the network adapter, enable icmp, verified I could ping other PCs on the same lan segment and they could ping me, and enable…
Charles Faiga
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On-prem Hyper-V VM replicate to Azure

So I have a question. I'm used to replicating my VMs to azure using site recovery. Im now facing an issue with one of our clients having a very slow upload speed and needing to send the initial copy over that slow line, it's about 900gb that needs…
Saeed
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How can I change the location of a virtual machine hard drive location?

I have created a windows server 2012 r2 server to be used as a domain controler but I left the hard drive on the C: drive, instead of saving it with all other virtual machine stuff on the D: drive. How can I change that?
Marcello Miorelli
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High Availability on DAS HPE

Anyone who can assist me? I currently have a DL360 Gen9 HPE server Directly attached to HPE MSA 2040 device (DAS). I now need to ensure HA on the server level, is it possible to have FO cluster (Hyper-V) on this platform without introducing a Fiber…
Msemane
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Hyper-V USB-Serial cable mapping to virtual machine

Windows Server 2012r2 running Hyper-V with a WinXP 32-bit VM. There is a particular application that will only run on WinXP that uses a serial connector to interface with an old diesel governor. I have researched on how to pipe COM ports between…
HelicanV
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Unable to update PowerShell with "couldn't complete the updates undoing changes" error

I have a Windows Server 2012 R2 instance running on Hyper-V that I'm attempting to update from PowerShell 4.0 to PowerShell 5.1. Once the update has been applied, I reboot the server to apply the updates and immediately afterwards, Windows…
Preston Martin
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