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office 2010 licensing for terminal services

I am upgrading a terminal server in a real estate agency. There are 70+ users but only around 30 workstations. Most of the office is shared where agents just come in and sit down at an empty desk where there are thin clients for logging into the server.

Have 35 CALs but on average there are about 10 active sessions.

The new server will be running RDS on 2008 R2 and I have found that i need to use a volume license for Office 2010.

My question is: what do i base the amount of licenses on?
The total amount of users, client machines or max concurrent sessions?

remmett70

I would say you want Device Cals. You would need 1 call for each device that connects to the RDS server. In your case 30. If you went with User Cals, you would need 70+ one for each user who connects even if not at the same time.

http://www.microsoft.com/licensing/about-licensing/client-access-license.aspx

bts86

ASKER

sorry i realize i wasnt very clear.

My question is about Office 2010 licensing for terminal services.

The RDS CALs I have already.

Hypercat (Deb)

You would need as many CALs for Office as you have for TS. Regardless of concurrent access, you need to have a license for each device for the Office software (i.e., just as if they were separate physical devices).

remmett70

You need to buy Device CALS for Office 2010, and they work the same as RDS Cals.

ASKER CERTIFIED SOLUTION

Mark Mahacek

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Lee W, MVP

Every user who is going to access the RDS server needs a license if you license by User. If you license by Device then every device licensed to connect to the RDS server needs a license (whether it's installed on the device or not).

If you can mix licenses, then you would need the appropriate counts based on the license mix.

Microsoft doesn't care about concurrency - if you only have 10 connecting at once out of 70, you may still need 70 licenses if you license only by User.