Virtual Desktops theory questions

Hello!

Help me please clarify several questions on Windows Server 2012 R2 virtual remote desktop  infrastructure.

Having read the following artcile http://windowsitpro.com/virtualization/virtual-desktop-infrastructure-part-2-finally-vdi

"The Remote Desktop Connection Broker role service is really the brains of the VDI environment. It communicates with and controls the other components, working particularly closely with the Remote Desktop Session Host in redirection mode, which is why the Remote Desktop Connection Broker and Remote Desktop Session Host in redirection mode are frequently placed on the same OS instance. However, when you start having more than 250 simultaneous connections, you might need to consider breaking the roles onto separate servers.

...

Remote Desktop Session Host in Redirection Mode

The concept of using a Remote Desktop Session Host in redirection mode isnt new.

...

Remote Desktop Virtualization Host

The Remote Desktop Virtualization Host role service is installed on any Hyper-V host that will be participating in a VDI pool. This role service lets the Remote Desktop Connection Broker role service communicate with the Hyper-V hosts, start and stop VMs, and gather internal information to enable client connections."

...I've concluded that RDSH and RDVH are the two separate roles that can be (and should be - according to the Figure1 !) installed onto the two separate OS instances (RDCB + RDSH in Redirection mode on one server and the RDVH on the other).

But when it comes to deploying VDI in practice I don't see how it's possible to separate RDSH in Redirection mode and RDVH services. Moreover, if we look at the following  screenshots...

http://blogs.technet.com/b/canitpro/archive/2013/04/25/step-by-step-deploying-virtual-desktops-with-windows-server-2012.aspx

...we'll see that on step 1 Add the Roles and features wizard "wants" to deploy the RDSH service while on step 3 the RDSH service transforms to the RDHV service.

Q1) What does this service transformation means?

Q2) Is it possible to have RDSH in Redirection mode and RDVH services on separate servers in Win2012?

Q3) Is it possible when using pooled virtual desktop collection to set, for example, 2 cores per virtual desktops wich based on Template1 and 1 core per virtual desktops based on Template2?

Thank you in advance,

Michael



  • Edited by MF47 3 hours 3 minutes ago add
February 20th, 2015 7:40am

P.S. After I walked all the steps required to deploy VDI (as per http://blogs.technet.com/b/canitpro/archive/2013/04/25/step-by-step-deploying-virtual-desktops-with-windows-server-2012.aspx) I got this:

So there should be both RDVH AND RDSH but I havn't been presented with the option for installing RDSH...


  • Edited by MF47 22 hours 48 minutes ago Changing
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February 20th, 2015 8:31am

Im going to try answer your questions:

1. RDSH and RDVH are main roles of entire RD which cannot be layed down on the same server. They will always have to be deviced in different server instances. You just cannot install both of these roles on the same server.

2. As I know, core, memory and hdd settings enheritates from Master VM. So yes, if a Tamplate 1 will have 2 cores, then all VDI instances in Collection 1 will be having 2 cores each.

3. To add a RDSH into already RDVH deployment, you will need to run Add Features and Roles - wizard and point desired server to be a RDSH.

February 20th, 2015 9:59am

Hello yannara,

Thank you very much for your answers!

"RDSH and RDVH are main roles of entire RD which cannot be layed down on the same server. They will always have to be deviced in different server instances. You just cannot install both of these roles on the same server." -

- but this article http://windowsitpro.com/virtualization/virtual-desktop-infrastructure-part-2-finally-vdi says

1) RDSH and RDVH CAN be layed down on the same server

2) RDSH in redirected mode is ALWAYS REQUIRED - should I deploy remote SESSION desktops or demote VM desktops.

The option 2 contradicts my own expirience - my VDI deployment works well WITHOUT RDSH - if this is the normal behaviour for what purpose may I want to add the RDSH to the VDI deployment? What else will I get???

Rehards,

Michael


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February 21st, 2015 4:17am

I couldnt open the article page, but even if this is possible, there is no much sence of doing that.

Im not sure what do you mean By "RDSH in redirected mode", but I admit that this RDS 2012 technology is still new to me too.

You can setup VDI infra with only one server, you will need RDVH, RDWeb and RDConnector roles, thats all. You dont need RDSH role for running VDI.

With RDSH, you will get RemoteApp, the "terminal sessions". Have you been around during Windows Server 2003 Tarminal Server? Thats it, but with additional RDWeb. RDSH is pretty much the same as Citrix XenApp overall.

February 21st, 2015 4:34am

"With RDSH, you will get RemoteApp, the "terminal sessions". Have you been around during Windows Server 2003 Tarminal Server? Thats it, but with additional RDWeb. RDSH is pretty much the same as Citrix XenApp overall." - yes, I understand.

"You can setup VDI infra with only one server, you will need RDVH, RDWeb and RDConnector roles, thats all. You dont need RDSH role for running VDI.  - I'm agree... but if I have VDI up and running without RDSH why its item is present on Deployment Overview diagram???  Can't find corresponding documentation anywhere... :(

Regards,

Michael


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February 21st, 2015 5:29am

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