Database Reference
In-Depth Information
The maximum number of failover clustering nodes for both DataCenter
and Enterprise editions are limited by the operating system maximum. But
Standard edition can only support up to two nodes. The Windows Server
2008 and higher supports a maximum of 16 failover cluster nodes.
This completes the process for preparing new failover cluster features by creating a
Configuration.ini
file. These steps will prepare the nodes to be clustered but there will
be no operational instance of SQL Server when the setup is completed.
How it works...
The Advanced installation phase for SQL Server 2008 R2 presents two methods, integrated
installation and advanced installation:
F
Integrated Installation: The integrated installation is useful to create and configure a
fully-functional single-node SQL Server failover cluster instance. We need to run and
use the Add Node setup functionality process from SQL Server installation.
F
Advanced Installation: The advanced installation allows the users to simulate the
steps of failover cluster setup to avoid any unforeseen issues during the installation.
This method is further divided into two steps: Prepare and Complete.
The Prepare step is useful to perform the prepare failover cluster setup on
one node with a
Configuration.ini
file that consists of all of the settings
that were selected. Once the prepare-nodes step is completed for failover
clustering, run Setup on the node that owns the shared disk resource to
configure the failover cluster instance and finish the installation that will
present the operational SQL Server failover clustered instance. The prepare
step does not require any underlying Windows Server cluster (MSCS) to be
installed.
Once the nodes are prepared for clustering, run the setup on nodes, which
are referred as Complete. However, the complete step does require the
specified hardware and software services to complete the successful
installation of failover clustering.
Installing and configuring Failover Cluster
Services
SQL Server Failover Clustering is created within the Microsoft Cluster Services (MSCS), which
is capable of detecting the hardware and software failures to switch the managed resources
for the instance automatically. Clustering provides availability for the most critical applications
and flexibility in managing the workload within the cluster.
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