Bryan Krieger

Quick steps for a TFS 2010 upgrade.

Bryan Krieger — Wed, 28 Oct 2009 17:25:00 GMT

One of our QA team members wrote up this quick step by step guide for doing a migration based upgrade to TFS 2010. These steps encompass some of the pre-req steps that you should follow when restoring the TFS, SharePoint and Reporting databases to a new set of servers when performing a migration based upgrade.

1. Backup TFS2005 or TFS2008 databases

a. TfsActivityLogging, TfsBuild, TfsIntegration, TfsVersionControl, TfsWorkItemTracking, TfsWorkItemTrackingAttachments

2. Backup Reporting Services databases

a. ReportServer, ReportServerTempDB

3. Backup SharePoint content Database (Only need the one with TFS content)

a. STS_Content_TFS ( or WSS_Content_TFS, or WSS_Content or STS_Content)

4. Install SQL Server 2008, SQL Reporting Services and SQL Analysis Services

5. Install Windows SharePoint Services 3.0 SP1

6. Configure SharePoint for Server Farm mode

a. Either Use the SharePoint wizard

b. Or the cmdline: (as Administrator, Change directory to (%commonprogramfiles%\MicrosoftShared\Web Server Extensions\12\bin”)

i. stsadm -o setconfigdb -databaseserver <datatier\instance> -farmuser <wssAccount> -farmpassword <wssAccountPassword>

ii. psconfig -cmd adminvs -provision -port 17012 -windowsauthprovider onlyusentlm

iii. stsadm -o extendvs -exclusivelyusentlm -url http://<machineName>:80 -ownerlogin <wssAccount> -owneremail "admin@localhost" -sitetemplate sts -description "Default Web Site"

iv. stsadm -o siteowner -url http://localhost:80 -secondarylogin <currentUser>

v. iisreset

7. Restore TFS databases to new data tier

8. Restore RS databases to new data tier

9. Configure Reporting Services to use restored RS databases using Reporting Services Configuration Manager

a. Connect to RS instance

b. Database page -> Change Database -> Choose an existing report server database -> Next -> Next -> [Select restored RS databases] -> Next -> Next -> Next -> Finish

c. Web Service URL page -> Change and then unchange the Virtual Directory textbox ‘ReportServer’ so the Apply button gets enabled. Click Apply.

d. Report Manager URL page -> Change and then unchange the Virtual Directory textbox ‘Reports’ so the Apply button gets enabled. Click Apply.

e. Encryption Keys page -> Click ‘Delete’ button to delete encrypted content. Click Yes to the popup.

10. Restore WSS Content database

11. Attach WSS Content database to SharePoint server

a. Open cmd window (as Administrator, Change directory to (%commonprogramfiles%\MicrosoftShared\Web Server Extensions\12\bin”)

i. stsadm -o addcontentdb -url http://<machineName>/sites -databasename <WssContentDatabaseName> -databaseserver <datatier\instance>

ii. stsadm -o addpermissionpolicy -url http://<machineName> -userlogin <currentUser> -permissionlevel "full control"

iii. iisreset

12. Install TFS2010

13. Select Upgrade Wizard

a. On Reporting Services page, Point to new RS instance

b. On Sharepoint Settings page, Point to new SharePoint server

14. After upgrade you will want to change the TFS instance GUID

i. net stop tfsjob agent

ii. iisreset /stop

iii. tfsconfig changeserverid /sqlinstance:<dataTierName> /databasename:Tfs_Configuration

iv. tfsconfig registerdb /sqlinstance:<dataTierName> /databaseName:Tfs_Configuration

v. iisreset /start

vi. net start tfsjobagent

Team Foundation Server 2010 Upgrade

Bryan Krieger — Wed, 21 Oct 2009 16:52:00 GMT

Team Foundation Server 2010 is a major upgrade from the previous release and Beta2 was just released on MSDN (See Brian Harry's post for more information on the Beta2 release). Among the many new and updated features in this release is a set of Configuration Wizards. The Upgrade from Previous Release Wizard is the wizard to use when upgrading from TFS2005 and TFS2008.

There are two paths to choose from when upgrading to TFS 2010 Beta2: “In-Place” upgrade and “Migration” upgrade.

Path 1: In-Place Upgrade

An In-Place upgrade is defined as an upgrade where you use the same set of hardware that is running the current TFS version. In this scenario you will be uninstalling the current TFS version, upgrading any pre-req components such as SQL Server and SharePoint server, and then installing TFS and running the Upgrade Wizard.

Examples:

1. Single Server - you are currently running TFS on a single server with SQL Server, SharePoint and Reporting Services/Analysis Services components. You would uninstall TFS and then install/upgrade TFS to Beta2 using the existing SQL Server, SharePoint and RS/AS components.

2. Multi Server - you are using separate servers for TFS, SQL Server and SharePoint. You would uninstall TFS on the TFS Server and then install/upgrade TFS to Beta2 on that same server.

High level in-place upgrade steps (See the TFS Install guide for more details):

1. Backup existing SQL databases

2. Uninstall Team Foundation Server

3. Upgrade to SQL Server 2008 (including Reporting Services and Analysis Services if using reporting)

4. Upgrade to Windows SharePoint Services (WSS) 3.0 SP1 or later (if using portal)

5. If using a separate SharePoint farm, uninstall existing Team Foundation Server Extensions for WSS and install TFS 2010 Extensions for WSS

6. Run the TFS 2010 setup and select the Upgrade from Previous Version Wizard.

Path 2: Migration Upgrade

A Migration upgrade is defined as an upgrade where you using a separate duplicate set of hardware to perform the upgrade. In this scenario you will be installing the pre-req components, copying the existing TFS related databases over and then installing TFS and running the Upgrade Wizard.

Examples:

1. Single Server - you are currently running TFS on a single server where all components are on this same server. For a migration upgrade you would set up a new separate server with the pre-req components (SQL Server, SharePoint, AS/RS), back up the TFS, SharePoint and Reporting databases from the existing server, restore them on the new server and then run the install/upgrade of TFS to Beta2.

2. Multi Server – you are using separate servers for TFS, SQL Server and SharePoint. You would setup new servers for each separate component, backup the appropriate databases, restore them to the new servers and then run the install/upgrade of TFS to Beta2.

High level migration upgrade steps (See the TFS Install guide for more details):

1. Backup existing SQL databases (TFS, SharePoint content, Warehouse and Reporting databases)

2. On new hardware, install necessary TFS pre-reqs including OS, IIS, SQL Server 2008, SQL Reporting Services and Analysis Services and Windows SharePoint Services. (Note: The TFS Basic configuration will install SQL Express for you and doesn’t require Reporting Services or Windows SharePoint Services)

3. Copy over backups from step #1 and restore databases on new hardware

4. Configure SharePoint and SQL Reporting to connect and use these restored databases

5. If using a separate SharePoint farm, uninstall existing Team Foundation Server Extensions for WSS and install TFS 2010 Extensions for WSS

6. Run the TFS 2010 setup and select the Upgrade from Previous Version Wizard.

Which path to choose?

There are essentially three scenarios to choose from which will determine which upgrade path you follow:

Scenario 1: Testing Upgrade

In this scenario you want to test upgrade on a separate set of hardware while leaving the existing system running. For this scenario you follow the Migration Upgrade path. In addition you will also need to change the TFS database "stamp" on this new upgraded instance. All TFS instances have a GUID that identifies them (regardless of what url you use to acces them). Your clients will get confused if there are two TFS instances with the same GUID. To change the TFS GUID follow these commands:

1. Open a cmd window as admin on the AT

2. Change to the directory: “%programfiles%\Microsoft Team Foundation Server 2010\Tools” and run the following commands.

a. iisreset /stop

b. tfsconfig changeserverid /sqlinstance:<dataTierName> /databasename:Tfs_Configuration

c. tfsconfig registerdb /sqlinstance:<dataTierName> /databaseName:Tfs_Configuration

d. iisreset /start

e. net start tfsjobagent

You may also want to disable SharePoint and Reporting Services on the trial upgrade (using either the upgrade wizard to uncheck the options or from the TFS Admin Console after the fact), OR you could choose to copy the SharePoint and Reporting Services databases over to the trial instance before upgrade (See my post Quick Steps for a TFS 2010 Upgrade for more information on that.)

Scenario 2: Production Upgrade

In this scenario you are ready to upgrade your existing production system and plan to use the existing hardware. For this scenario you follow the In-Place Upgrade path. (Note that in this scenario that because you have to uninstall the existing version of TFS and the TFS 2010 upgrade is changing the existing data, “failing back” to that previous version of TFS will involve restoring the TFS databases from backup and re-installing the previous TFS version.)

Scenario 3: Production Upgrade with quick fall back plan

In this scenario you are going to move to new hardware at the same time as upgrading your production system, AND you will keeping the existing version of TFS running on the old hardware until the upgrade completes successfully. For this scenario you follow the Migration Upgrade path. (Note that the benefit of this scenario is that you can “fall back” and resume using the previous version of TFS on the old hardware if the upgrade fails.)

In my next post, I’ll have a screen by screen posting of an upgrade from TFS2008 to TFS2010 Beta2.

The New Efficiency

Bryan Krieger — Wed, 30 Sep 2009 18:33:00 GMT

The excitement for the Windows 7 launch is building on Sept 29th Microsoft kicked off "The New Efficiency" live event from San Francisco. Check out the Virtual Event at: http://www.thenewefficiency.com/ to see the Keynote, information on Window 7, Windows Server 2008 R2, Microsoft Exchange Server 2010, Microsoft Forefront, Microsoft System Center and Microsoft Desktop Optimization Pack.

TFS 2010 Beta1 - Upgrade may fail with TF50363: The following display name is not valid.

Bryan Krieger — Thu, 21 May 2009 21:31:00 GMT

If you are testing TFS 2010 Beta1 you may hit the following error during upgrade:

TF50363: The following display name is not valid.

This is due to a known bug in our upgrade scripts where in the Version Control db (TfsVersionControl) tbl_Identity table there exists one or more rows where the DisplayName field contains data that is not in the expected format of domain\username.

If you hit this error, the workaround is to update the row and prefix the existing value with a dummy domain name like 'domain\'.

You can query the tbl_Identity table to see if you have any rows where this is the case by running:

use TfsVersionControl

SELECT * FROM tbl_Identity WHERE DisplayName NOT LIKE ('%\%')

If the query returns rows, then you can run the following to prefix ‘domain\’ to the field and re-run the upgrade. Note you’ll have to do after restoring the TFS 2008 dbs and before re-running the upgrade (see below)

UPDATE tbl_Identity

SET DisplayName = 'domain\' + DisplayName

WHERE DisplayName NOT LIKE ('%\%')

To restart upgrade you will need “start over” by following these high level steps:

1. Uninstall TFS 2010 (removing the configured Application Server that is created during install/upgrade)
2. Drop the SQL databases
3. Restore the TFS 2008 databases
4. Update the row in tbl_Identity with the dummy domain name from above
5. Retry the TFS 2010 upgrade

We have identified where this is a bug in our code and will resolve this in Beta2.

Addition to TFS 2010 Installation Guide: Migrating SharePoint content in preparation for TFS2010 upgrade

Bryan Krieger — Mon, 18 May 2009 23:42:00 GMT

As with any major server based upgrade, it is recommended that you test the upgrade prior to doing the production upgrade. For TFS 2010, to do this you will need to setup a separate environment that you can upgrade. We have made this easier to accomplish than in previous releases. You only need to copy the necessary databases (TFS and WSS content) to a separate set of hardware and run the TFS Upgrade Wizard. You no longer need to “clone” the existing system.

However, there is an important set of steps to add to our TFS 2010 Installation Guide. The guide provides a checklist for performing the upgrade (see "Checklist: Upgrade from Visual Studio Team System 2008 Team Foundation Server"). Here are some additional instructions that you need to follow if you want to first copy your WSS content to another server to use in the upgrade test. I recommend you migrate/copy the WSS content to the new server prior to running the TFS 2010 upgrade test by following these additional instructions. You can insert these steps right after the step "Prepare Portal Server" in the Upgrade checklist.

Install Windows SharePoint Services 3.0. If you setup a copy of your existing WSS content for as part of a migration based upgrade you need to install Windows SharePoint Services 3.0 by following the instructions found in the Prerequisites section under "How to: Install SharePoint Products and Technologies on Windows Server"

For more information see: How to: Install SharePoint Products and Technologies on Windows Server" topic in the TFS Install guide

Restore the SharePoint content database. Backup the WSS Content database from your previous TFS instance and restore it onto the Data Tier server you will be using for TFS 2010.

Attach the restored WSS Content database to WSS.

Note:

To perform this step on Windows Server 2008, you must open an elevated command prompt. This step is required even if you log on with administrative permissions. To open an elevated command prompt, click Start, right-click Command Prompt, and then click Run as Administrator.

1. Open a Command Prompt window on the server that is running SharePoint Products and Technologies.

2. Change directories to the following location:

Drive:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\bin\

3. At the command prompt, type the following command, replacing the placeholders as specified:

stsadm.exe -o addcontentdb -url http://WSSServerName/sites -databasename contentdatabase -databaseserver SQLServerName

Where:

WSSServerName is the name of the server that is running SharePoint Products and Technologies

Contentdatabase is the name of the WSS content database

SQLServerName is the name of the data tier server that is running SQL

4. At the command prompt, type the following command, replacing the placeholders as specified:

stsadm.exe -o addpermissionpolicy -url http://WSSServerName -userlogin Domain\UserName -permissionlevel "full control"

WSSServerName is the name of the server that is running SharePoint Products and Technologies

Domain\UserName is the domain and user name of the account used during setup SharePoint Products and Technologies.

If you are installing SharePoint on the Application Tier server you can skip the section in the checklist called “Install and Configure Extensions” as this will be done for you during the Application Tier installation. If you are using a separate server to host the SharePoint site, then you will need to follow the instructions in that section.

Guiding Principles Around Major System Upgrades

Bryan Krieger — Tue, 12 May 2009 18:58:00 GMT

While upgrading from a previous version of Team Foundation Server is a fully supported scenario in TFS 2010 and the new Wizards are intended to make the upgrade as painless as possible, it is still extremely important to spend time planning this upgrade and it pays to follow a few guiding principles:

1. Plan your upgrade

Spend time putting together a plan for the upgrade. TFS is a complex system and whether you have a single server installation of TFS or a distributed complex multi server deployment. Putting together a project plan will pay dividends in the end.

2. Prepare ahead of time

In addition to building a plan, spending time preparing for the actual upgrade is just as important as the TFS upgrade itself. TFS sits on the “top of the stack” and depends upon several technologies working together to be successful. Making sure to have the “pre-reqs” prepared and ready will take some time and is extremely important for a successful upgrade. For more information on the pre-req for TFS 2010 see the TFS 2010 Installation Guide

3. Decide on fall-back plan

While we have worked very hard to ensure a smooth upgrade, it is always important to have thought through the “fall-back” plans in the unlikely event that the upgrade is not successful. In future posts I will discuss some of the fall-back plans as well as features we’ve built to help ensure upgrade success.

4. Test, test, test

Finally, any upgrade of a production system (especially a server based system like TFS) should be tested beforehand. I will also talk about several testing strategies you can employ in future posts.

The Upgrade Experience - Team Foundation Server 2010

Bryan Krieger — Mon, 11 May 2009 20:37:00 GMT

This is the first of a series of posts around the topic of Upgrading to Team Foundation server 2010 from a previous release.

Team Foundation Server 2010 is a major upgrade from the previous release. Among the many new and updated features in this release there is a significant change in the architecture that enables a more flexible and scalable deployment.

For the Team Foundation Server 2010 release, we have made a significant investment the areas of Setup, Configuration and Administration. First, we have separated the installation from the configuration process, then we created a set of Wizards to help with the most common configuration tasks and finally we created a new administrative console that provides a common user experience instead of the many command line tools from previous releases.

See Brian Harry’s blog posts on Team Foundation Server 2010 Key Concepts for details on the big changes in this release and TFS 2010 Admin, Operations & Setup Improvements for details on the changes specific to the Administration space.

This series of posts will focus on the topic of Upgrading from a Previous Release of TFS. In the next few weeks we will cover an overview of the changes in Upgrade for TFS 2010, important planning and preparation stages of upgrade, the actual TFS upgrade process and the post upgrade work necessary to take advantage of new TFS 2010 features.

In addition, I’ll have some posts that will cover different upgrade strategy options, dive into a set of sample deployment topologies and provide a set of Tips and FAQs around upgrading.

Looking for TFS databases for upgrade testing

Bryan Krieger — Sun, 05 Apr 2009 17:15:00 GMT

We are in the process of testing the upgrade feature on TFS 2010, and in the next release you will be able to upgrade directly from either TFS 2005 or TFS 2008. Right now we are collecting real world customer databases to test against.

Specifically, we are looking for customers of TFS that are willing to share (via upload to a secure FTP site) a SQL backup copy of their databases with us here at Microsoft. We will then use these databases to test the TFS upgrade feature.

If you are interested in participating and can share your TFS database, please reply to me here, or email me directly at bryan.krieger@microsoft.com.

Thanks!

Using SQL Log Shipping with TFS

Bryan Krieger — Tue, 20 Jan 2009 19:29:00 GMT

This is a refresh of an original post by Suhid Hasbe and updated for TFS 2008.

There are several options for disaster recover within TFS. In this post we will focu son SQL Log Shipping. Other options include Backup/Restore and SQL Clustering (mirroring).

Log Shipping is very close to Mirroring. The only difference is Mirroring is almost real-time synchronization of databases whereas Log shipping is time delayed synchronization. In short you can synchronize the databases every X minutes. This helps when the geographic locations of primary and secondary servers are far apart for example if you want to have Primary server in the US and Secondary backup server in Asia. You do not want to do mirroring in this case, as it may slow down the primary server.

Terminology: Primary Server – Main TFS Data Tier, Secondary Server – Backup Data tier Server Before you begin you should have installed SQL Server 2005 or SQL 2008 on the secondary server. Following are the steps to setup Log Shipping for TFS

Configure Log shipping

Connect to the primary server using SQL Server Management Studio
Repeat steps 3-8 for all the TFS Databases(list provided below)
Right Click on each database and select properties
On Properties dialog select Transaction Log Shipping option
Select "Enable this as a primary database in a log shipping configuration"
Click on "Backup Settings" button, this should startup "Transaction Log Backup Settings"
1. Enter the Network and local paths to the backup directory
2. Enter reasonable time for delete and alert settings
3. Click on "Schedule button" to open Job Schedule properties dialog. Select the schedule for transferring the transaction logs based on your environment. For example if you have primary server in US and Secondary in Asia you may want to schedule it for every hour. Once you have selected your schedule click "Ok"
4. Click "OK" to get back to Database properties dialog.
Next Click on "Add" to add a secondary server. This will open a Secondary database settings dialog
1. Click on "Connect" button and enter connection information to connect to secondary server
2. Select "Yes, generate a full backup of the primary database and restore it into the secondary database (and create the secondary database if it doesn't exist)".
3. Click "Restore options" button to select the location of data files and transaction log files on secondary server.
4. Select the "Copy Files" tab and enter the destination folder for the copied files on secondary server.
5. Click "OK" to get back to database properties dialog
Click on "OK" and the system will automatically setup the secondary database with log shipping setup.

Note: You should configure the transaction log shipping schedule (step 6.1) for all databases at same time. e.g. all of them can run after every 1 hour starting 7:00PM. This is crucial to keep the databases in sync.

Failover to the secondary Database

Important: To failover to the secondary server we have to failover all the databases at the same time.

On the Team Foundation application-tier server, prepare and stop the services.(Detailed steps)
On the new Team Foundation data-tier server

Connect to the secondary server using SQL Server Management Studio.
Run following TSQL Query for each TFS database. This will restore all the secondary databases and make them operational

Restore database <TFSDBName> with Recovery

On the Team Foundation application-tier server, configure the application tier to use the new data tier.

On the Team Foundation application-tier server, open the Command Prompt window.
At the command prompt, locate the program file directory location for TFS and change to the \Tools sub-directory.
Run the TFSAdminUtil tool with the RenameDT option to map the Application Tier to Secondary Server

TFSAdminUtil RenameDT <SecondaryServer>

On the Team Foundation application-tier server, reconfigure Report Server .(Detailed steps)
On the Team Foundation application-tier server, reconfigure SharePoint. (Detailed steps)
On the Team Foundation application-tier server, restart the services. (Detailed steps)
Update the work item cache. (Detailed steps)

TFS Databases: ReportServer, ReportServerTempDB, STS_Config_TFS, STS_Content_TFS, TfsBuild, TfsIntegration, TfsVersionControl, TfsWarehouse, TfsWorkItemTracking, TfsWorkItemTrackingAttachments, TfsActivityLogging

Announcing 10-4! Weekly Video podcasts on Visual Studio 2010

Bryan Krieger — Thu, 18 Dec 2008 05:26:16 GMT

The Visual Studio and .NET Framework evangelism team just launched a weekly channel9 show focusing on capabilities of Visual Studio 2010 and the .NET Framework 4.0 cleverly titled 10-4!

You can be the first to get these episodes by visiting http://channel9.msdn.com/shows/10-4/ and subscribing to the RSS feed of your choice.

Episode 1 covers how to download and use the Virtual PC image of Visual Studio 2010 September CTP.

Episode 1: Downloading and Using the Visual Studio 2010 September CTP

Running SQL Server 2008 on a Hyper-V environment

Bryan Krieger — Thu, 18 Dec 2008 00:02:00 GMT

If you are looking information on if you can run SQL Server 2008 on a Hyper-V the folks in the SQL Server Customer Advisory Team (www.sqlcat.com) have put together a whitepaper on best practice recommendations on just this topic:

http://sqlcat.com/whitepapers/archive/2008/10/03/running-sql-server-2008-in-a-hyper-v-environment-best-practices-and-performance-recommendations.aspx

For TFS customers wanting to run the entire stack on Hyper-V this white paper should help you evaluate and test the configuration as it relates to SQL Server.

Best regards,

Bryan

Dealing with the Team System 2010 CTP expiration

Bryan Krieger — Tue, 09 Dec 2008 17:21:00 GMT

Jeff Beehler has written a nice post about how to address the Team System 2010 CTP expiration date.

Small Basic is live.

Bryan Krieger — Thu, 06 Nov 2008 20:42:00 GMT

This is a wonderful tool that Vijaye has been working on for a long time and now has been released via DevLabs. As someone that cut their “programming” teeth on versions of GW-BASIC running on TRS-80, CoCo, and the Commodore64, the simplicity of BASIC opened a whole new world of computers for me. Introducing children to the joy of programming with VS2008 can be…well…overwhelming to both parents and children. Vijaye’s blog post introducing Small Basic helps illustrate the reasoning behind his project….

History

It all happened in August of last year when someone sent me a pointer to the article Why Johnny Can't Code and it got me thinking. After all, when I was a kid, I started programming in ZX Spectrum with a built in Sinclair BASIC interpreter and did so until I ran into Turbo BASIC. To me that transformation was groundbreaking and was the single most important reason why I chose to write software for a living, for the rest of my life.

An informal poll along the corridors in Microsoft revealed that most developers within Microsoft had started programming in some variant of BASIC. It had all the good characteristics of a good beginner programming language - simplicity, minimal ceremony, instant gratification and ubiquity. It helped them "get" programming and assisted them with understanding the need for more advanced concepts.

When I asked them how they're going to teach programming to their children, they were stumped. Almost everyone wanted to, they just didn't know how. Some said KPL, Python and Ruby. Some said Alice and Scratch. But they all felt that none of these have the charm of BASIC. Of course there were some that took the Dijkstra's stand, but they were few.

Of the numerous programming languages, BASIC, from its inception in the 1960s has undergone some major transformations. Even among Microsoft's BASIC offerings, the language and the environment (VS) has been repeatedly updated to include more powerful features with every release. On the one hand this makes the language and the environment very powerful and capable, but on the other hand, it makes it daunting for a beginner.

That got me thinking as to why isn't there a "Small" variant of BASIC that brings the simplicity of the original language to the modern day. And after a year, here we are, announcing Small Basic. Small Basic is a project that will help make programming easy and approachable for beginners. Now, that's a pretty big claim - let's see how Small Basic does it.

Check it out!

Get more detailed error message information from the TFS admin tools in TFS 2008.

Bryan Krieger — Thu, 13 Mar 2008 23:19:00 GMT

The TFS administration tools will output error information should a command fail. There is an environmental setting that you can set before running the command that will cause our tools to output more detailed information. Simply set the following variable:

Set TfsDetailedErrors=1

Now when you run tfsadminutil command you will get more details.

Deploying SQL Server Reporting Services or Analysis Services on a Remote Server in TFS2008

Bryan Krieger — Sat, 08 Mar 2008 22:38:00 GMT

In TFS 2005 the SQL Server Reporting Services (SSRS) had to be on the Application Tier and SQL Server Analysis Services (SSAS) had to be on the Data Tier. With TFS 2008 you can deploy these on remote servers. This is documented in the TFS Installation Guide in the section titled: "How to: Customize Deployment of Team Foundation." You can always download the latest version of the guide from MSDN here.