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Server with Hyper-V configuration and SSD disks

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Hello

I am interested in building a server configuration with hyper-v for demo purposes. (6-7 vms)

In order to run faster the VMs and the core server,

1) is it recommended to add an SATA SDD hard drive for the core ?

I heard it would reduce the hard drive lifetime due to many writes and the performance is not so much greater than standards HDDs.

2) is it recommended to add an SATA SDD hard drive to host the VMs ?

3) is it recommended to add an SATA SDD hard drive to host the VMs considering I will be using Windows Server 2008 R2 on the guests ?

I heard TRIM command is not implemented for old VHD and it is only reserved for VHDx (and Windows Server 2012)

4) what is the impact of SDD lifetime in hosting VMs ?

thanks a lot

Chea-Lie


Windows 8 virtual machine dropping packets

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I have a Windows 8 VM running on Windows Server 2012 and at least 4 times an hour, the VM drops packets for about 10 seconds. This causes the remote desktop connection to freeze up and if I happen to be pinging, it shows that the packets are lost. The host server is stable, and so are all the other VMs running on that host (an assortment of Linux and Windows Server 2012 VMs). I've migrated the VM to another Server 2012 host on the network and I'm still seeing the same intermittent packet loss issues. 

I don't see any errors in the Event Viewer and all hosts/guests have been assigned static IP addresses.

Hyper V guest intermittently loses connectivity

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Dell R710
Windows 2008 R2 Enterprise Host
Windows 2008 R2 Guests
LOM1 - Management
LOM2 - Virtual Network 1 - 3x Low volume guests
LOM3 - Virtual Network 2 - Exchange 2010 guest
"Allow management operating system to share this network adapter" is off on both Virtual Networks

I will be connected to the Exchange 2010 guest via RDP and the connection will drop for 10-20 seconds. I am unable to ping the guest, but I can ping the host. I can ping other guests on the other virtual network.

When it happens, there is nothing in eventvwr.

I have turned off anything on the host and guest in the networking settings that says anything close to "offloading". Also did netsh interface tcp set global chimney=disabled on both the host and guest.

identical VM hosts

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hello everyone 

i have a small project to do 

i need to deploy VM hosts with +100 VM each 

these hosts are identical in hardware and software. 

what i want is to find out 

1. can i automate deployment 

2. can i automate updates "adding/removing VMs" to the hosts

i am planing to have WS 2012 and SCVMM 2012 SP1. is that enough ? do i need anything else because i never did something like this before 

any ideas how to achieve that ?

thank you

 


I am Supporting WP7 but please keep improving it MS.

identical VM hosts

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hello everyone 

i have a small project to do 

i need to deploy VM hosts with +100 VM each 

these hosts are identical in hardware and software. 

what i want is to find out 

1. can i automate deployment 

2. can i automate updates "adding/removing VMs" to the hosts

i am planing to have WS 2012 and SCVMM 2012 SP1. is that enough ? do i need anything else because i never did something like this before 

any ideas how to achieve that ?

thank you

 


I am Supporting WP7 but please keep improving it MS.

Starting After Save Does Not Restore Network IP

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I've been running a Hyper-V VM on Windows 8 for several months with only one issue, for the most part, that has happened several times now.  When ISave my VM and then start it up the next day, it starts up fine, but does not restore the network connection.  The Hyper-V Manager's Networking tab shows theAdapter info, but no IP Addresses are shown.  Inside the VM the network is NOT connected either.

In order to get it back, I have to close everything inside the VM and restart the OS.  I'm running Windows 7 as the guest OS.  I have no issues with Pause.  I've never had this problem with either normal shutdown/startup or pause/resume; only with Save/Start.

I appreciate any assistance and I'll provide more info if needed.  Thank you.


PRISMAY

SR-IOV and arp cache poisoning attack

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On our 2008 R2 hosts, in order to prevent an arp cache poisoning attack, we have setup filters in the virtual switch to lock each VM down to MAC/IP combo.

How is everyone protecting against arp poisoning on server 2012 with SR-IOV given the VM is talking directly to the NIC, bypassing the virtual switch?

Looking for ideas...

thanks much


BarrySDCA


Hyper V Environment - Server 2012

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Wonder if someone could help? A simple step by step would suffice.

What I am hoping to achieve is to create a hyper-v server with the following guests

Guest 1 - Domain Controller with DHCP and DNS roles

Guest 2 - SCCM2012

Guest 3 - SQL 2008 R2 or later (Compatible with SCCM)

Now, my knowledge with any VM product is limited, I have managed in the past to set up the Hyper Server with the guest os's but have had major issue with getting them all talking to each other.

Any help or quick how too's would be appreciated.

Thanks

John



Hyper-v server 2012 core, hyper-V manager problem

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Hi

I have a problem connecting hyper-v manager from a windows 8 to a workgroup Server 2012 Hyper-v core only. My setup is a windows 8 in a workgroup and the server also in workgroup, I have followed this guideline http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/thread/fe80f0aa-0697-4657-a1da-19d36b036698/

The problem is, that I get the following error in the "Virtual Machines" field when trying to connect to the server: Hyper-V encountered an error trying to access an object on computer 'name' because the object was not found. The object might have been deleted. or you might not have permission to perform the task. Verify that the Virtual Machine Management service on the computer is running. If the service is running, try to perform the task again by using Run as Administrator.

Does anybody now how to solve this ? (And the service is running)

Dennis

Hyper-V running Windows 8. spawn new vm from template/ snapshot for lab scenario of multiple users

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Hi

I'm new to windows server 2012 and have been able to use hyper-v to create VMs for different versions of windows. What I'm trying to do is create a lab for 10 people to connect to that doesn't require the pain of installing visual studio on a bunch of laptops running windows 8 etc etc. Is it possible to have hyper-v/ or some VM manager to create copies or spawn new VMs from a snapshot/ template VM so that a new user gets their own VM and at the end of the week I can purge the VMs or get the VM manager to remove them after X days without use. 

I hope I'm not too vague here in my questioning.

Shared LUN between VM's

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I am new to Hyper-V and have a question about a shared LUN between two VM's. I Have a LUN on a Dell SAN and I have granted access to it to a group of servers within the Dell Storage Manager. I can mount the volume on both VM's  but when I put data on the volume on one server the other server does not see the same data. Is this by design or am I doing something wrong? Can I not mount a shared LUN on two VM's at the same time so they both see the same data?

Thanks in advance!


Chad Guiney

Windows Hyper V

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Is windows hyper v is bare metal ? but how any reason ...............

Remote connection to VM is freezed.

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Hi All,

We are running 2 Hyper-V hosts (Win2008R2SP1) in our company, each have a total of 280GB RAM and more then enough CPU power.

Each host is running 50 guests. Lately some of our users started to complain that when they are connected to the VM's, the machine is stuck or get freeze for few minutes and than being released and once again working until it will be stuck again.

I have checked the hosts for anything in the event viewer and nothing was found.

Does any of you have an idea why such behavior occurs?

Thanks.

FC Tape Library on Hyper V 2012

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Guys,

Wanna check on the virtual fiber channel that's new with Hyper V 2012. Now that the VM are able to see fc LUN which are attached to the host, does this means that fc tape library is also supported? Anyone has some experience with this? :)

Regards,

Cyril

Guest VM failover cluster on Hyper-V 2012 Cluster does not work across hosts

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Hi all,

We are evaluating Hyper-V on Windows Server 2012, and I have bumped in to this problem:
I have a Exchange 2010SP2 DAG installed on 2 vms in our Hyper-V cluster (a DAG forms a failover cluster, but does not use any shared storage). As long as my vms are on the same host, all is good. However, if I live migrate or shutdown-->move-->start one of the guest nodes on another pysical host, it loses connectivity with the cluster. "regular" network is fine across hosts, and I can ping/browse one guest node from the other. I have tried looking for guidance for Exchange on Hyper-V clusters but have not been able to find anything.

According to the Exchange documentation this configuration is supported, so I guess I'm asking for any tips and pointers on where to troubleshoot this.

regards,

Trond


hyper v

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Hi all,

I installed Server 2012. Now I want to add hyper v role, but I can't.

error  : " hyper v can not be installed, A hypervisor is already running.

How to set the volume/directory for the Hyper-V replica folder different from the production VHD

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Hello,

We are running out of space on our server for the replication spot.    Ideally I'd keep my VHDs in our f: drive and the replication folders in the G: drive.   We have several virtual machines and would like to keep the production VHDs on the F: drive and just use the newly attached g: drive strictly for replication. 

So to be clear, I don't want to move the replica after it has replicated, I want to make the default location for all replication on another drive.     All the things I've found so far in the GUI want to move both the VHD and the replica folder.


CPU Process Distribution

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Hi All,

FYI, i am using Window Server 2008 R2 which sit on VM. However, noted that there is a process which is only utilizing 1 CPU where i have 8 CPUs eventually. My vendor suggest me to use OpManager to distribute the load to all CPU. I am not so happy with the answer where i need to have additional cost to purchase third party tools in order to utilize the CPU. May i know if there is any setting i need to set in the OS level to utilize all the CPU?

Dynamic Memory issue: DM add fails with 0x800705AA

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Hi,

I'm running WS2012 and wanted to use dynamic memory with a VM of mine. If I set the VM's memory to static, I can start the VM without issues with 2GB memory. However, the VM usually takes little memory (128-256MB) unless it has to perform a work intensive job, hence I wanted to use dynamic memory. The Hyper-V console reports the correct memory consumption values, but every time the VM exceeds the initially allocated memory, no further memory is allocated.

Since the machine's physical memory consumption is somewhere at 32% and the disk has hundreds of GBs free, I'm rather puzzled what could cause this. Once the VM's memory consumption goes to 'Warning', I get this error logged in the event viewer:

Log Name:      Microsoft-Windows-Hyper-V-VMMS-Admin
Source:        Microsoft-Windows-Hyper-V-VMMS
Event ID:      19540
Task Category: None
Level:         Error
Keywords:     
User:          SYSTEM
Description:
DM operation add for the virtual machine 'vmname' failed with error: Insufficient system resources exist to complete the requested service. (0x800705AA)  (Virtual machine ID vmid).

At least one service or driver failed, but nothing shows as failed

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I'm asking this here because this issue is a direct result of moving a guest Windows Server 2003 SP2 Standard Edition virtual machine from Virtual Server 2005 to a new maching running Windows Server 2008 R2 SP1 Enterprise Edition, using Hyper-V.  Regardless if I do the recommended method of removing the Integration Services before copying the VHD or after, something is failing at startup, but it will not reveal to me what it is.  I've done this before with no issue, but no such luck this time.

I'm getting the standard "At least one service or driver failed during system startup. Use Event Viewer to examine the event log for details.", but there is nothing showing as failed anywhere.  I'm quite familiar with these messages, but the usual accompanying message in the event log that tells you which device/service failed is not there.  There are not any other error or warning messages in the System or Application Logs.  All of the services set to Automatic have started, and are still running (except Performance Logs, which started and stopped as normal).  There are no issues showing in Device Viewer.  I have even used theset devmgr_show_nonpresent_devices=1 to show the truly hidden devices in Device Viewer, and removed the leftover devices from when it was running on Virtual Server 2005.  I still get the service/driver failed message when I reboot.

So how do I find what service/device is failing?  I've researched and tried things for days to no avail.

If there is a better forum to ask this in, please let me know, as I wasn't sure where to start, but thought someone using Hyper-V might have dealt with this before.

Thanks!

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