Application-aware image processing on disconnected networks

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Application-aware image processing on disconnected networks

Veeam Logoby aantoniani » Sun Oct 28, 2012 5:52 pm

Hi colleagues, I am looking for advice/suggestions.
Here is a quick description of my setup: Veeam server and Hyper-V hosts are on 10.0.0.0/24 (called the LAN network). A group of Windows VMs are on 10.200.0.0/16 (called the NET1 network), they run their own separate Windows domain and have no connectivity with the 10.0.0.0/24 network.
We need to have application-aware image processing (Exchange in running on those VMs), but there is no connectivity from the Hyper-V hosts (acting as backup proxy) to the NET1 network and I receive an error

Code: Select all
Unable to subscribe to guest processing components: Failed to connect to guest agent. Errors: 'Cannot connect to the host's administrative share. Host:  [10.200.1.25]. Account: [NET1\veeam]. Win32 error:The network path was not found. Code: 53'


What solutions would you implement? I can only think of creating a VM to act as backup proxy, with one NIC on the 10.0.0.0/24 network and one on the 10.200.0.0/16 network, but I would prefer to have the Hyper-V hosts do the proxy, as they are far more powerful, under light load when the backup runs and they would host the VM that acts as proxy anyway.
I can connect a NIC of the Veeam server to the NET1 network, is there a way to have the Hyper-V host act as proxy, but start guest component processing from the Veeam server?

Thanks in advance, Alessandro
Alessandro Antoniani
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Vitaliy S. » Mon Oct 29, 2012 9:40 am

Hi Alessandro,

In order to use application-aware image processing your backup server should have a network access to the backed up VMs, as Veeam backup console manages this process, not proxy servers.

Thanks!
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby aantoniani » Tue Oct 30, 2012 8:30 am 1 person likes this post

You are correct, I have added a NIC on the NET1 network to the backup server and processing has completed successfully.
Thanks for your help!
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby JSi » Tue Jun 03, 2014 1:30 pm

Hi all,

I have similar problem and configuration, but I can`t use this workaround with separate NIC to project networks (because of security and a limit 12 NIC per VM). However we`re using NAT so there is a firewalled path to that networks. Problem is that backup server takes internal IP of VM and there is of course no route to that IP.
Is there a way how to resolve this?
Is there a way how to permanently inject required veeam components to selected vms (sql, exchange)?

Thanks for any advice.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Vitaliy S. » Tue Jun 03, 2014 1:57 pm

Backup server interacts with the IP address returned by Hyper-V Integration Services. Also even if you inject the run-time process you will still have to reach these VMs via network to instruct VSS writers inside the Guest OS on what to do to have application consistent backups. If you could create routing to external IP addresses of these VMs from the backup server (either through hosts file or something else, not sure), then it would work.

Let's see what our community members can suggest on this.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby JSi » Tue Jun 03, 2014 3:34 pm

Base on this manual (http://helpcenter.veeam.com/backup/70/h ... ackup.html) I thought that it is not necessary for vss to have network interaction with backuped vm, because of hyper-v integration component.
It`s somewhat misleading then.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Vitaliy S. » Tue Jun 03, 2014 9:37 pm

Jan, I will pass this info to our tech writers team, thanks for the feedback!
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby JSi » Mon Jun 09, 2014 9:03 am

I was not successful to find some solution for this. It`s a pity because Microsoft DPM is able to do this. So in my point of view it is a drawback with using agentless approach. Or it is better to say that drawback is the inability to instruct Veeam to use alternative way to vm`s admin share or invoke a session in direction from vm to backup server (because veeam is not exactly agentless).
Vitaliy, thank you for your interest. Is it possible to find out if such feature could be in some next releases?
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Vitaliy S. » Mon Jun 09, 2014 9:44 am

Hi Jan,

I believe DPM can handle this because it installs agents inside the Guest OS to freeze all applications in consistent state before taking a snapshot.

So there is absolutely no network access to protected VMs in your VI, even when changing the routing table in the hosts file of the backup server?

Network-less access should be possible once Microsoft introduces this capability as a feature of Integration Services (VMware has this already in VMware Tools), but thanks for the feedback!

Thanks!
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby laurencebullivant » Wed Jun 25, 2014 11:08 am

Is there any progress on this as this will be a show stopper for us. (we run lots of overlapping subnets).

According to the release notes from Server 2012 R2 the ability to copy files into the virtual machine through the integration tools exists now.

http://technet.microsoft.com/en-us/libr ... ntegration

Copy-VMFile allows files to be copied into the vm.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Vitaliy S. » Wed Jun 25, 2014 11:19 am

No updates on this, thanks for the link though. We will investigate this method more closely, but it seems like you can only copy files, but not execute them.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby laurencebullivant » Wed Jun 25, 2014 11:25 am

That might be the case. Maybe you can copy files into the admin$ share using this command? Either way it is worth looking into.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Vitaliy S. » Wed Jun 25, 2014 11:41 am

Just confirmed - it's all about just copying files, no ability to execute the process.
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby Gostev » Thu Jun 26, 2014 8:06 pm

I've been pushing the Hyper-V product team at Microsoft for this feature for over 2 years now! You guys should help me and push them from your side too ;)
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Re: Application-aware image processing on disconnected netwo

Veeam Logoby JSi » Mon Jun 30, 2014 8:41 am

Whom exactly to push?
Is this feature really so uninteresting for others that there is nearly no interest to implement it?
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