Friday, July 16, 2010

Our TFS 2010 Topology

Grant Holiday (a blog I highly recommend) posted DevDiv’s 2010 hardware topology. Oddly enough, our proposed solution looks much the same.

With TFS 2008, we’re currently making use of F5’s Big/Ip for controlling access to our primary and standby server. We switch between the two during failover situations. With 2010 we’ll be enabling Round Robin and opening up load balancing between 4 VMs running the TFS 2010 App Tier on 2008 Server R2.

Moreover, like DevDiv, we’re taking the opportunity to break out our Warehouse and Analysis Services to a separate server. Our plan is to run an Active/Active cluster. Active Node 1 will run things like TFS_Configuration while Active Node 2 will run the Tfs_Warehouse and Reporting Services databases. If we have hardware failure, we’ll have a single Node running both while the failed node is repaired. We were thinking of doing a 3-node Active/Active/Passive cluster, but the data center didn’t feel comfortable with that because they don’t currently support that configuration.

Let me know what you think of our solution.


姿柯瑩柯dgdd憶曾g智曾 said...
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Maciej said...

You have this solution in one datacenter or in two?

Mac Noland said...

The secondary site where we mirror the cluster to is a separate data center.

Maciej said...

Very nice concept! Hymmm... You use a p2p SQL replication? And what is your concept about WSS replication?

Mac Noland said...

The DBA group calls it mirroring.

I'm not a SQL guy so I'm not 100% sure if the concept of "mirroring" is a generic term for many different replication technologies or is specifically a replication technology.

In any sense, we're mirroring the data over to the over site.

As for our WSS replication, keep in mind that Site 2 is only used during an outage of Site 1. So like TFS and Reporting Services, we mirror the WSS databases over to Site 2, but only use Site 2 if we have a site outage on Site 1.

Think of Site 1 as a passive SQL cluster that is not being hit by users.

Michael said...

How has this failover topology worked for you? Any problems or issues? I'm also designing a failover strategy for TFS 2010 and would be very much interested in on your design and outcome.

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