Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.

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We have a Dell server running ESXi 6.5 connected to an iSCSI SAN using four paths on Round Robin, the SAN has dual controllers for failover but the iSCSI sessions are connecting to the failover path rather than the preferred primary path although there are no issues with the networking equipment via the preferred path.

I have attempted to make configuration changes via vCenter to get the iSCSI sessions back on to the preferred primary paths but it keeps reverting to the failover path causing an error light on our SAN (caused by error "Virtual Disk(s) Not On Preferred Path").  So in an attempt to correct this error light on our SAN, I've removed the static targets and the discovery targets on the ESXi server, removed the iSCSI sessions via SSH, then did a rescan.  The failover paths are still being reconnected after a rescan of the HBA's although those failover paths do not seem to be saved anywhere.  Why are failover paths being rediscovered

Dell PowerEdge R710 using Broadcom NetXtreme II BCM5709 for iSCSI initiators
Dell MD3220i SAN
ESXi 6.5 connected to vCenter Server 6.5
Gigabit Ethernet connections between host and SAN
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VMs in environment showing a very high vMotion precopystun time. Recommendation for healthy environment should be below 500ms or less but precopystun time over 900ms in environment. What can be implemented to reduce this time, can anyone confirm?
I have a simple (old) Punch Time Clock device on the network and having issue to poll the clock - experiencing all kinds of network disconnects etc. while connecting from Virtual Machine.

I suspect that it has to do with the fact that the network adapter used by this VM is part of a TEAM (NIC teaming enabled - TEAM is made of 3x 1GB NICs).

My Host OS is Windows Server 2012 R2.

I wonder if there is anything that can be tweaked on the advanced features of the network adapder assigned to VM that could make it more reliable (network speed is not a concern for this particular VM)
We have a physical server HP server, running Windows Server Essentials 2012 R2. We ran the Disk2VHD tool to create the .vhdx image of the server.

When we try booting the VM of the 2012 server on a loan (Dell) server, we receive the attached error.

The VM is a Gen2 and we have tried turning secure boot off/on and changing it to UEFI bios rather than legacy on the VM to no avail.

Also recreated it as a Gen1 VM and we receive a flashing blank cursor.
SecureBoot ErrorVM Error

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When create backup / replication job on File and Exchange sever, should I click "Enable applicaiton-aware processing"  on Veeam Backup & Replication 9.0 ?


Hi all,

while installing openfiler (iso file) i am getting error as

you may reboot your system safely

please help

Veeam B&R 9.5
Windows 2012 R2 Veeam Server
Windows 2012 R2 Veeam Proxy Servers have 4

When Backup runs from Veeam B&R I get this event id 157

Log Name:      System
Source:        disk
Date:          10/18/2017 8:07:12 PM
Event ID:      157
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Disk 1 has been surprise removed.

This happens on all servers I listed above.  

Would like to know if I can suppress this event

I applied KB2955164  no change

I ran diskpart automount disable    and diskpart automount scrub     no change

Has anyone figured this one out?


like a full clone in VMWARE , is there a way to do this?

Could you help me understand this , I came up with circumstance where one of the VM has “HD Audio “  in the VM level but when I try to vmotion to another ESX host  it throws error

“VM is configured to use a device that prevents the operation: Device 'HD Audio' has a backing type that is not supported. this is a general limitation of the virtual machine's compatibility with the ESXi version of the selected host”

Help me understand this concept , how is the Audio device tagged to ESX host when there is no affinity rule set ?  what make the ESXi host think its not compatible to be vmotioned from the existing ESXi host where the Audio is enabled on the VM level .

Also the interesting part is there is Secondary VM which has this same  Audio configured in other ESXI host even if I try to select that ESXI host iam not able to vmotion it  .

Any one has any resolution ?
Hi All,
We have a single Hyper V 2012 R2 host with 17 VM guests (Various OS's all Windows don't think it mattes but thought I would mention it)  I have been playing with DPM server and I think I have either misunderstood or missing something.

I have installed the DPM agent on the Hyper V host and backing up using Express Backups once a day the Hyper V guests.

The question/misunderstanding is I thought once an initial replica is taken only changes are transferred over on the next express backup?

On some of my guests that seems to be happening only the odd GB is transferred but on the majority its many GB's 100's where it is not possible that much has changed and this is every day (been nearly two wks now)

Am I missing something here or simply misunderstood every thing I have read states only changes between express backups are transferred.

I understand incremental backups are only possible inside the VM's but that's not what we want to do.

So what exactly does get transferred at each express backup the whole VM again or just changes because at the moment I'm seeing both and unfortunately this is not the backup solution for us as it stands its taking too long to back things up.  


John H
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I have a virtual machine running Server 2012. The host machine machine is running Hyper-V. I need the virtual machine to be on a separate VLAN with only internet access and possibly some limited access from other machines on the local network. The host machine connects to a Cisco 3560X managed switch. The switch is connected to a port on our Sonicwall firewall.

I am not sure what the best approach is nor would I know exactly how to configure it.

I think the main concern I have right now is how to configure the port on the Cisco switch. Will adding the VLAN during work hours cause any distrubtion?...Do I need to make any changes on the firewall?
Hi All,

My (new) company is looking at redoing our infrastructure.  
Our current setup consists of
1 SQL Server (2008 R2) / File Server
1 Terminal Server - Used for external sales people (figure 10 max concurrent, 31 external people total)
1 Watchguard appliance - url scanning and what not (also old).

We have no active directory server, no VPN.  The terminal server is mapped to an exposed port which is then forwarded to 3389.

I know the setup is less than ideal but I'm dealing with what's here.

The idea was to buy a new server to replace our failing TS Server but I've been pitching a VMfarm as we're dealing with multiple single point of failures.  

I'm currently thinking 2 Physical servers, that would need to be attached to a SAN to replace all of the above.  Our company in total is maybe 50-60 people with low CPU utilization currently.  Ideally I'm thinking for 4 or 5 VMs:

1)  Windows Gateway for Routing / VPN (or is it better to run a hardware appliance for this?)
2)  Active Directory Server
3)  Terminal Server
4)  File Server
5)  Sql Server

I would ideally like to split the VMs utilizing both machines, and enable vMotion(?) to allow the VMs to failover in case of a physical hardware failure.  

So Questions:

1)  What kind of licensing is needed for the physical servers?  (Vmware? If so what edition to enable failover)
2)  What kind of licensing do we need for the servers besides the OS (Always get confused about user CALs and what not)
I need to convert a physical Ubuntu server to a HyperV VM. What tool can I obtain to accomplish this task
I'm trying to find a clean step by step guide on how to migrate VMware VM's to Azure. I've been looking at a few sites but they each seem to differ a little. From what I gather I need to:

1. Use the Virtual Machine converter to convert the vmdk to a hyper V disk
2. Use hyper V manager to boot the machine and install the drivers
3. Upload a management certificate to my azure subscription

I have not done any of the above steps yet as i wanted to verify or see if their is an easier way.
Need to build a brand new from scratch 2 host failover cluster with Server 2016. Only a DC and F&P server are needed. There is no domain in existence currently. Therefore what would be the best order of steps to do this?
The VMs are on shared storage.

e.g. this did not work.
Build host 1 with Hyper-V
Add a VM as a DC and create new domain.
Add host 1 into the new domain.
Build host 2 with Hyper V
Add host 2 into the domain.
Add the Fail over clustering to each host and configure the cluster (including building the F&P VM) using the domain.

I have done the above as a test with the DC being added as a highly available server into the cluster.
Host 1 'owns' it. As soon as host one is forcefully switched off, the domain shuts down with the DC on host 1 and the cluster disappears from the Failover Cluster Management console of host 2.

Should i have 2 independent DCs (one per host) instead so that when one dies the other keeps the cluster alive?

Is there a best practice?

I'm trying to find a simple, free or low cost solution to allow us to monitor the status of certain windows services, disk space remaining and Memory Remaining.

Is there a tried and tested agent that we can run on the virtual server to get this info?

I have a NetApp FAS 2520 running OnTAP 7 Mode and use it for my Hyper-V environment (storage for clustered Hyper-V hosts). I currently have a LUN mapped as a Cluster Shared Volume from the NetApp via iSCSI for my VHD and VM files. I have numerous separate LUNs mapped as volumes for my network shares (user files), SQL DBs and logs, SCCM repositories, etc. as I was guided by NetApp that this is the best way to set this up, likely because the initial thought was to use their backup and replication solution which we’re not using now.

I have recently switched my backup software to VEEAM. In using VEEAM, any of these VMs I’m backing up that have a LUN mapped to them for storage (file server, SQL server, etc.) need to use an add-on Windows Agent because of the non-virtual disk storage used.

So I’m wondering if there’s any negative impact in creating virtual disks in place of those mapped LUNs, moving the data to those, and then mapping those virtual disks as volumes so my VMs have all virtual storage and no longer need the VEEAM Windows Agent installed. Any thoughts on pros or cons of setting it up this way?

i have 2 ESX servers.

1st server is running ESX6.0 and is in the network 192.168.1.x
2nd server is running ESX6.0 and is in the network 192.168.0.x

both networks are on a different location. We have created a VPN tunnel between the 2 locations.

i have installed vcenter in the 1st host running in the 192.168.1.x network.

when i add the 2nd host in the vcenter than this works fine, i see the host and and can create vm's.

but when i Launch the Virtual Machine Console from a VM on the 192.168.0.x network then i get an error saying that it cannot connect to the MKS in server 192.168.0.x:902

When i Lauch the Virtual Machine Console from a VM on the 192.168.1.x network then all works fine.

what am i missing?

I added a large 3TB VM to the Veeam backup job and ran it over the weekend. It started out processing fairly quickly but gradually got slower.  I looked at the esxi console and there was the question about the redo log file being corrupt.  CAlled Veeam support who suggested that to stop the job and manually consolidate the disks, but I cant do that - the option is grayed out.  

I havent clicked on the OK button to the above question as I fear the VM will boot.

Any advice?

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I'm trying to test if the VM workstation and the main window is connected with each other. However when I tried to ping from VM workstation to the main window, it states that Host cannot be found even though when I tried to ping in the  reverse direction the packets could reach. How can I solve this problem? The adapter setting for the VM workstation is NAT.
Dear Experts, we are using Veeam B&R 8.0 to backup VMs to a NAS. But the storage's size was consumed very fast. Please see the attached pictures for the settings of restore points and VM retention in Veeam.

In the rest picture, you can see we have some .vib (incremental) and .vbk (full) backup files. Questions are:

1. If we setup the restore points to 15, why did not Veeam delete backup files before October 1st automatically? Is there any setting which we can config to achieve that?

2. Can we delete some backup files manually?

Many thanks in advance!
Good morning everyone,

I would just like some clarity on hyper V VM Licensing please.

Can i move VM guests to different servers with different Server2012 licenses?

If say one VM guest was built on a particular server, with Server 2012 License A, if i want to move it to another server with Server 2012 License B?

Once moved, do i update the VM guest with the License of the new physical host it now resides on?

Thanks all
I have a VM that me and my developer both access using the same Windows 2003 server VM.

I would like to get an email every time the machine gets logged into.

How can I do this?
Good morning companions,

I have the following problem with my SRM service since when I try to start it, it appears me next message:

the vmware vcenter site recovery manager server service on local computer started and stopped. some services stop automatically if they are not use by other services or programs

I can not even restart them either, I tried rebooting the server but the problem persists.

Please support them.

Best regards.
Server OS: Server 2008 R2 Enterprise
Running Software: Microsoft SQL 2005 & Adobe Cold Fusion 9

I have a server that is having "memory issues".  What's happening is when I look in Task Manager, I see that the memory usage is running at 95%.  Since it's a virtual machine (VMWare), I increased the RAM by 4GB (so now it's at 24GB total).  After booting up, I notice that it's running at 97% again.  When I look at the Processes tab, I see that JRun.exe (Cold Fusion) is taking up 4.3GB and sqlserv.exe (SQL) is taking up 2.4GB.  The other processes, when added up, don't come anywhere near 24GB.  So what is using up all of the memory and why isn't displayed in Task Manager?
I checked my pagefile and noticed that the C: drive is set to "System Managed" and the page file on root of the C drive is a 24GB in size.  Does that have anything to do with it?
*See Attached Screen Shot*






Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.