yep, the recommendation is for a sizeable farm to purchase / processor license http://support.citrix.com/article/CTX106176 <http://support.citrix.com/article/CTX106176&parentCategoryID=274> &parentCategoryID=274 there was always MSDE to consider. guides say up to 100 servers for MSDE, I've never had cause to want to push that. Not sure how it all stands with express edition: think at pubforum it was said that all the sql2005's had been tested ... really should have held off of the beer :( _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Cláudio Rodrigues Sent: 15 May 2006 20:14 To: thin@xxxxxxxxxxxxx Subject: [THIN] SQL Licensing on Citrix environments... Quick question for you guys. How are you licensing Microsoft SQL on your Citrix environment? Per processor? I ask because after reading the SQL 2005 licensing paper, it clearly states this: ?Sometimes organizations develop network scenarios that use various forms of hardware and/or software that reduce the number of devices or users that directly access or use the software on a particular server, often called "multiplexing" or "pooling" hardware or software. Use of such multiplexing or pooling hardware and/or software does not reduce the number of client access licenses (CALs) required to access or use SQL Server software. A CAL is required for each distinct device or user to the multiplexing or pooling software or hardware front end. This remains true no matter how many tiers of hardware or software exist between the server running SQL Server and the client devices that ultimately use its data, services, or functionality.? http://www.microsoft.com/sql/howtobuy/multiplexing.mspx I am sure it is the same for SQL 2000. From what I understand Citrix would then work in a ?multiplexing? way as everytime pretty much someone logs on Citrix, data is read/written to the SQL database (like counters for RMS, load, where the user is, etc,etc). If that is the case if you have a 1,000 users farm you need 1,000 SQL User CALs (or device, depending if you have more users or devices). Is that correct??? If that is correct, I assume everyone is using processor license with SQL, right? I am looking for the official answer for this. Any ideas? Cláudio Rodrigues Microsoft MVP Windows Server - Terminal Services