This article describes the hotfixes and updates that we recommend that you install on each node of a Windows Server 2008 R2-based failover cluster. When you update your Windows Server 2008 R2-based failover cluster, you help reduce downtime. You also help decrease the number of errors, failed print jobs, and other support issues that you experience.
Note We recommend that you evaluate these hotfixes and updates to determine whether they might resolve problems in your environment. If you determine that cluster nodes that are in your environment may be affected by the problems that an update or hotfix addresses, install the hotfix or update on each cluster node that is in your environment.
Use the information in the "More information" section to help you determine whether a particular hotfix or update applies to the server cluster. Before you install a particular hotfix or update, we recommend that you review the original Microsoft Knowledge Base (KB) article that describes that hotfix or update.
We recommend that you install Windows Server 2008 R2 Service Pack 1 (SP1), as it has many fixes for problems with Windows Clustering and for the hotfixes that are referenced in 2545685. If for any reason you cannot immediately apply SP1, we recommend that you install the following Windows Server 2008 R2 hotfixes, depending on your environment.
We recommend that you install the following hotfixes if you plan to install the failover clustering feature on Windows Server 2008 R2 Core:
Stability update for Windows Server 2008 R2 Failover Print Clusters
Fixes print cluster stability. Apply only if print cluster resources are configured. Available for individual download.
To avoid problems that affect the cluster operation when the network is unreliable, install the following hotfix:
2552040 A Windows Server 2008 R2 failover cluster loses quorum when an asymmetric communication failure occurs
To avoid performance issues on the cluster and possible system crashes, install the following hotfix:
2520235 "0x0000009E" Stop error when you add an extra storage disk to a failover cluster in Windows Server 2008 R2
We recommend that you install the following hotfixes, depending on the resources that are running on the server cluster. You do not have to install these hotfixes if you are not running these resources on the server cluster.
976571 Stability update for Windows Server 2008 R2 Failover Print Clusters