offsite backup for this terminal server

We have one terminal server running on window server 2008 R2 in our office,we are planning to setup offsite backup for this terminal server .In normal circumstance ,this offsite backup TS server is power off and just power on during the disaster . Below is the question i have:

1.Do i need purchase additional window server 2008 R2 license ?
2.Do i need purchase additional RDS license ?
YaYangTeahAsked:
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Kini pradeepDevelopment ManagerCommented:
do you have an active software assurance ?
if yes then you dont need a windows server License to run a cold Backup.

refer to the Licensing Guide
download.microsoft.com/download/e/6/.../windowsserver2016-licensing-guide.pdf

if no SA then you might require additional License for the server (or contact a MS representative in your Geo)

For RDS cals , as Long as both the RD servers are in the same Domain and of the same Windows 2008 R2 the the existing CALs are Valid (per device or Per User)

https://support.microsoft.com/en-in/help/2473823/best-practices-for-setting-up-remote-desktop-licensing-terminal-server

I hope this helps. There is also temp CALS available for TS in case your TS/ RDS licensing server goes down and I believe they are valid from 52- 89 days

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YaYangTeahAuthor Commented:
I just ask our vendor ,they said this server is installed using OLP license .What is this mean ?
Kini pradeepDevelopment ManagerCommented:
OLP is open License program , that means you might have Software assurance covered

https://www.microsoft.com/en-us/licensing/licensing-programs/open-license?activetab=open-license-tab%3aprimaryr2

So you might not require a windows License if SA is covered
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YaYangTeahAuthor Commented:
for the terminal server ,we still in workgroup due to application can not support AD.

we can use the user cal license to put in the offsite terminal backup server and shut in down if DR happen ?
Kini pradeepDevelopment ManagerCommented:
Are they in the same workgroup if yes then there should be no problem at all. If they are not in the same workgroup then also you can install and activate the RDS license server it will issue temp cals
Lee W, MVPTechnology and Business Process AdvisorCommented:
You might be better off replicating to the remote site.  Though you may need another Windows license for this, it should prevent issues with CALs.  If you use Hyper-V to host your RDS VM, it's free and in my opinion easy.  VMWare (I Think) has a paid option to replicate.
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