Здравствуйте. Созрел такой вопрос. Если есть 2-х процессорный сервер, на котором стоит Windows 2012 Standard c Hyper-V и на нём запущена виртуальная машина Windows 2012 Standard с 4-я процессорами. Сколько понадобится серверных
лицензий? Майкрософт говорит, что купив 1 лицензию Windows 2012 Standard можно запустить бесплатно 2 виртуалки, но про количество виртуальных процессоров умалчивается. так сколько понадобится лицензий? Спасибо.
Вопрос по лицеензированию
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Hyper-v Disk ID/signature issues
Hallo,
We have a windows 2008 R2 64b Hyper-V host running, everything runs fine but in the eventlog i see 2 disk id/signature conflicts. All the VM were running /installed on physical drives ( don't ask me why) . My predecessor used disk2vhd to clone a drive and changed the VM. although all is running and all the VM's are booting without any issues, unfortunately my backup fails everytime because now i hjave a disk on the host and a VHD with the same Disk ID/Signature.
i search the web and found articles how to change the Disk signature manually, but but can even create more issues. is there a "safer" way to fix this Disk ID issue ?..
Hope you guy's can help me..
Thanks
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server 2012 SCVMM and Hyper-V can not configure Migration Settings
I have been trying to trouble shoot why I see cluster migration vs live migration on certian host nodes in my cluster. I foudn that some of them have live migration enabled and others dont. When I try to click accept live migrations and acccept I get a different error depending on if I am VMM or Hyper-V.
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iscsi remote boot and Hyper-V vSwitch
I am looking for some tech background information about why its not possible to use a network (intel x520) card as virtual switch that is used for boot from iscsi in hyper-v. is this a limitation by windows, the intel driver? any background info about the why would be appreciated
thanks
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Hyper-V in Server 2012 - Strange NIC issues
I'm going to describe the issue as best as I can, but it's extremely odd to say the least...
We have 2 new servers, HP DL380 G7s. that are going to be the start of a new Hyper-V cluster. I built the first one up with minimum fuss, but the second has NIC issues as soon as I add the Hyper-V role.
From the four on-board NICs, two are in our domain VLAN 1, and the other 2 in their own VLAN 18. They will be teamed, but for the sake of simplicity I'll keep teaming out of this for now. Before adding the Hyper-V role I can ping out of every single NIC, after adding the Hyper-V role 1 of the NICs no longer respond to ping.
At this point I have not created any virtual NICs, nor changed anything in the physical NIC adapter settings
I remove the Hyper-V role and they all start to work again, I re-add the role and a different NIC stop working.
The driver and firmware versions are exactly the same as the server that currently works. Also, NICs 1+3 go to one of our DC switches, and 2+4 go to another, this is to add redundancy once they get teamed. However for testing I have now patched in the problematic server directly into the same ports the working server was using.
To add to the strangeness, if I create a virtual switch using the NIC that doesn't work I can then ping out of that.
Any ideas welcome :-)
Andrew France - http://andrewsprivatecloud.wordpress.com
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Unable to create filesystem (mkfs.ext4) on large > 2TB GPT virtual disk using Linux VM.
I am unable to create a file system on a large (> 2TB disk) virtual disk for a Linux VM. I can create the disk, attach it to the VM, partition it with "parted", but I cannot run mkfs.ext4. Details below.
Hyper-V 2012 Core (w/ all Windows/Microsoft updates as of 4/19).
CentOS 6.4 VM w/ 4 virtual processors, 4GB RAM, and 3 dynamic drives:
/dev/sda 100GB IDE dynamic vhdx
/dev/sdb 75GB IDE dynamic vhdx
/dev/sdc 10TB SCSI dynamic vhdx
Using parted, created 500GB partition on the 10TB drive (/dev/sdc1).
(parted) select /dev/sdc
Using /dev/sdc
(parted) print
Model: Msft Virtual Disk (scsi)
Disk /dev/sdc: 11.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Number Start End Size File system Name Flags
1 1049kB 500GB 500GB production_archive
then run: mkfs.ext4 /dev/sdc1
repeating error on console from mkfs.ext4:
INFO: task mkfs.ext4:2581 blocked for more than 120 seconds
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Runaway error in var/log/messages until my /var system filled up - 25G worth of it:
-rw-------. 1 root root 25085329408 Apr 19 23:15 messages
Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Sense Key : No Sense [current]
Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Add. Sense: No additional sense information
Apr 19 17:39:28 nfs2 kernel: hv_storvsc vmbus_0_13: cmd 0x93 scsi status 0x2 srb status 0x6
Same problem happens when running "mkfs.ext4 -E lazy_itable_init=1 /dev/sdc1"
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Server in Hyper-V using a snapshot file but not snapshot is shown in Hyper-V console?
hi all
We have an application server running in Hyper-V on Server 2008 R2
The server was created 1 year ago and today we realised that the server is running off a snapshot file (.avhd), but in the hyper-V console manager there is no snapshot being shown.
so the original vhd file is dated 1 year back and the snapshot file is 25Gb larger than the original vhd - so lots of new data!
how can i merge this snapshot back to the original vhd file without loss of data?
any advice much appreciated!
many thanks
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VM license
Hi all,
We are planning to migrate all the VMs that are running Windows Server 2008 R2 Standard under Windows Server 2008 R2 Enterprise Hyper-V host and using the host OS license key to Windows Server 2012 Hyper-V host. But I have some questions about VM license.
- How many VMs that are running Windows Server 2008 R2 Standard and using the host OS license key I can run under Windows Server 2008 R2 Enterprise Hyper-V host?
- How many VMs that are running Windows Server 2008 R2 Standard and using the host OS license key I can run under Windows Server 2008 R2 Data Center Hyper-V host?
- If I migrate all the VMs that are under Windows Server 2008 R2 Enterprise Hyper-V host and running Windows Server 2008 R2 Standard to Windows Server 2012 Standard/Datacenter Hyper-V host, how to deal with the license key of these VMs?
I'm really confused with the VM license.
Thanks,
高麻雀
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Microsoft Server 2012 and Hyper-V 2012 licensing
I have some questions about the licensing
Windows Server 2012 Standard license (2 physical CPU) --> allows to install two virtual machines
Question 1) I'm allowed to install two virtual machines based on Server 2012 Standard (then I have 3 servers with 1 license)? Or a maximum of two virtual machines running Windows/Linux/whatever?
If I run the Hyper-V 2012 server (free hypervisor)
Question 2) and i buy a Server 2012 Standard license. I'm allowed to install/run two virtual machines based on 2012 server?
Because you have 1 P(hysical)OSE and 2 V(irtual)OSE licenses with 2012 standard.
I found a MS article
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Can I install Hyper-V on Windows 2008 x86?
hi..need more info if this is possible? if yes, how?
i do have old DELL PE800 (previous OS Windows 2003) and would like to use it for learning purposes.
thanks
anthony
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In place upgrade from Windows 2008 R2 to Windows 2012
We running few VM’s on Windows 2008 R2 with SAN Storage, now we need upgrade the same to Windows 2012.
Can we do in place upgrade without losing anything ..? or do we have any challenges.
Please suggest
Kris
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Hyper-V RAID Options - Multiple RAID1 / RAID10 / RAID50
Hi guys. Need your professional advice for our development server. We are buying a new development server with the following specs.
Intel Xeon 8 Core CPU
192GB of RAM
8 x SAS 600GB 15K RPM
PERC H700p 1GB RAID Controller
Below are the 3 options which I still can’t decide which is better performance for 30 virtual machines running on Hyper-V.
Option 1
2 x 600GB RAID-1 for OS
2 x 600GB RAID-1 for VMs – 600GB usable (hosting 10 VMs)
2 x 600GB RAID-1 for VMs – 600GB usable (hosting 10 VMs)
2 x 600GB RAID-1 for VMs – 600GB usable (hosting 10 VMs)
Option 2
2 x 600GB RAID-1 for OS
6 x 600GB RAID-10 for VMs - 1800GB Usable (hosting 30 VMs)
Option 3
2 x 600GB RAID-1 for OS 6 x 600GB RAID-50 for VMs – 2400GB usable (hosting 30 VMs or more)
Which option you think is best for performance for all VMs? Disk IO Performance is our main concern. At first I was thinking Option 1, but RAID-1 doesn’t give better performance. Yes Option 2 RAID-10 provides higher IO but will it able to handle so many VMs in 1 array?
Thanks.
Intel Xeon 8 Core CPU
192GB of RAM
8 x SAS 600GB 15K RPM
PERC H700p 1GB RAID Controller
Below are the 3 options which I still can’t decide which is better performance for 30 virtual machines running on Hyper-V.
Option 1
2 x 600GB RAID-1 for OS
2 x 600GB RAID-1 for VMs – 600GB usable (hosting 10 VMs)
2 x 600GB RAID-1 for VMs – 600GB usable (hosting 10 VMs)
2 x 600GB RAID-1 for VMs – 600GB usable (hosting 10 VMs)
Option 2
2 x 600GB RAID-1 for OS
6 x 600GB RAID-10 for VMs - 1800GB Usable (hosting 30 VMs)
Option 3
2 x 600GB RAID-1 for OS 6 x 600GB RAID-50 for VMs – 2400GB usable (hosting 30 VMs or more)
Which option you think is best for performance for all VMs? Disk IO Performance is our main concern. At first I was thinking Option 1, but RAID-1 doesn’t give better performance. Yes Option 2 RAID-10 provides higher IO but will it able to handle so many VMs in 1 array?
Thanks.
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cannot access VM's from the host OS
I have a number of VM's running win server 2012 on a host running Windows 8 (its a lab environment).
One of the VM's is a domain controller, and the rest of the vm's are on the domain run from that domain controller.
The host is not on a domain.
I cannot access any of the VM's from remote desktop on the host. I thought you could always access VM's from a host via remote desktop.
Any ideas on how i might resolve this?
Thanks!
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Running 2012 DC on a 2008 R2 Hyper-V server
Is it a safe solution to run a virtualized 2012 server who’s only role is a Domain Controller on a 2008 R2 server running Hyper-V and two other logical partitions also running 2008 R2 ( one is File / Print, the other is a distribution point for SCCM )
I will also have two dedicated DCs running 2012 at my data center ( as well as multiple DC at my corporate parent site ) and these remote DCs will be supporting less the 40 users each and are in place to support the remote sites during WAN outage.
The other option with the licenses I have is to upgrade the Hyper-V Manager with 2012, building the new DC partition as 2012, and run the other two partitions as 2008 R2. Can 2012 upgrade over the existing 2008 R2 server without clearing the logical partitions?
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Shut down all Hosts without HA moving the VMs
Hello
We are going to perform maintenance on our entire Server-Blade system witch contains 5 Hyper-V hosts (win 2008R2 core) and 4 physical DB-servers. We are upgrading the Blade's NIC's to 10Gb.
To do this I will need to shut down all physical servers including the Hyper-V hosts but I do not want the vm's to perform the automatical HA move of wm's during this Maintenace.
So my questions are:
What is the best way to shut down all hosts without moving the vm's?
Can I put the HA in "Maintenace mode" or temporarily disable it?
Do I need to put the Hosts in Maintenace mode ?
/Anders
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server 2012 hyper-v vSwitch performance is terrible
Running an HP DL380 G5 single quad core with 8GB of ram.
OS is on RAID-1 146GB 10k rpm SAS
VM's boot from EqualLogic SAN on 24 900GB 10k rpm SAS via iSCSI at 1Gb/sec (as a test lab)
Host OS is Server 2012 with hyper-v role (all updates)
Client VM's are all server 2012
I have been running bandwidth tests between VM's on the same node and have noticed that no matter what I do I cannot get the vSwitch to push more than about 2.0Gb/sec between VM's. I am using iperf as a test to generate bandwidth.
I have tried between 2 VM's, I have tried 3 VM's pushing to 1 VM, I have tried 2 to 2, but no matter how I structure the tests the overall aggregate bandwidth between all the VM's never exceeds ~2Gb/sec over the vSwitch.
Suppoesdly the vSwitch is a virtual 10Gb/sec adapter so I'm wondering why I can only push 20% of that traffic. I'm using iperf because it doesn't require disk I/O to test bandwidth because I want to eliminate the client OS or the SAN as the bottleneck.
Can anyone provide help on getting more performance out of the vSwitch?
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Find a physical machine for zombie vm
Hey folks,
I have been given the task of finding the physical machine of a zombie VM .The problem here is we have don't have any records of this zombie machine computer account in active directory .We can ping the zombie vm but can't connect . we don't know the physical machine of that zombie . we have around 1000 servers mixture of pyhsical and virtual .we are using Hyper-v
Ask . how can we find the zombie vm's physical machine based on ip address
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Hyper-V Architectire?
I have recently installed a Genuine copy of Windows Server 2012 and Hyper-V. I am confused at the architecture of Hyper-V, please could someone help with the following:
I was under the impression that hyper-v worked like VM ESX/ESX-i in that it was a bare metal hypervisor. Now I am starting to think that it is more like VMWare player etc. I noticed that main WS2012 operating system has my Virtual machine HDD on them! Does this mean that the hierachy is as such:
VM1 VM2 VM3
Hyper-V
Operating System (WS2012)
Hardware
Which would indicate like Oracle and VMWare Players all the process of the virtual machines must go through the main operating system?!
I originally thought that the hyper-v structure was more like:
OS VM1 VM2 VM3
Hyper-V
Hardware
Please could someone give me a simple answer along with any good publications they know of which would help me explain this.
I was under the impression that hyper-v worked like VM ESX/ESX-i in that it was a bare metal hypervisor. Now I am starting to think that it is more like VMWare player etc. I noticed that main WS2012 operating system has my Virtual machine HDD on them! Does this mean that the hierachy is as such:
VM1 VM2 VM3
Hyper-V
Operating System (WS2012)
Hardware
Which would indicate like Oracle and VMWare Players all the process of the virtual machines must go through the main operating system?!
I originally thought that the hyper-v structure was more like:
OS VM1 VM2 VM3
Hyper-V
Hardware
Please could someone give me a simple answer along with any good publications they know of which would help me explain this.
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Hyper-V Replica and Cluster Functionality
Hi,
If I have VM's in Hyper-V cluster (Cluster A) and replica VM's offsite in a Hyper-V Replica cluster (Cluster B), which of the following is true?
- Should a node in cluster A fail the VM's will migrate to other nodes within cluster A
- The Replica VM's in cluster B will become "primary"
- You can choose what happens.
The reason for this question that I am planning on building a Hyper-V cluster in a Production DC and want to use Hyper-V replica as DR. So I only want VM's in the DR site to become active in case of a complete Production site failure.
Is this possible?
Thanks in advance!
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How to diskless boot guest PC from Hyper-v on network?
I'm sorry if this has been asked before but this is my first time doing this configuration and I need to get some things straight.
I have a Hyper-V Manager installed on a server with a Windows 7 virtual machine on it. I also have another client physical machine with no OS installed on it connected to the same network.
How can I get the client machine to boot into the Hyper-V's VM? How do I tell the client machine to recognize Hyper-v? And how can I tell Hyper-v to recognize the client machine?
Do I need anything else other than Hyper-V installed? Like PXE Network Booting enabled on the client's machine?
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