Continue the installation as you would normally in SQL Server. The rest of the installation is exactly like the. Reboot both servers. SQL Server. You will. As you can. Log in or register to rate. Join the discussion and add your comment.
This first article in the series of article on clustering SQL Server will explain the general architecture of clustering.
This article by new columnist Chad Miller shows you some of the more integral parts of troubleshooting running Windows Authentication security in a SQL Server environmnet. Your software has passed all testing phase s and it is time to install your database into production. Andy Jones will outline below how he accomplished this task. This article is concerned with an evolving system and how to migrate it to production. These two software components are the minimum requirement in a environment to cluster SQL Server If you have not read my article on Clustering SQL Server from Feet , I would recommend that you do so before moving forward since this guide will use terms that I assume you know from the last article.
Note: As with any type of configuration and installation, there are multiple ways of doing this. I will show you towards the end of this article how I configure clustering for optimal performance. This may not be the best method of optimizing things in your environment. Tip: Before attempting clustering, I would recommend that you install service pack 2 for Windows There are a number of bug fixes between the two service packs related to clustering.
Although it is possible to cluster SQL Server after it is installed, it makes it much easier if you have already have this piece complete. If you already have this part done, SQL Server will automatically detect that it is in a clustered environment when you try to install it.
Before you begin, make sure all of your drives you plan to share are formatted. You will also want to ensure that your network is fully configured. This account will need to be a domain account and be an administrator. Make sure you make the password non-expiring.
Stop the second node that will be in the cluster. This is only a precaution and is generally not required. Click on Cluster Service as shown below. Note: When you install Windows , you can also check this box when choosing your components to install. The Configure Clustering option will be highlighted. Click Next to continue in the wizard.
This will take you to the Hardware Configuration screen. You will now need to provide a name for your cluster. If one machine fails in your cluster, this name will move to the surviving node. Do not use an Auto-select setting for speed. Click Properties. Click the radio-button for Use the node address Type in a subnet mask of Click OK to return to the previous menu.
Microsoft strongly recommends setting static IP addresses for all network adapters in the cluster, both private and public. If you must use DHCP for your public network adapter, use long lease periods to assure that the dynamically assigned lease address remains valid even if the DHCP service is temporarily lost.
In all cases, set static IP addresses for the private network connector. Rename the Local Area Network Icons 1. Click Rename. Type Private Cluster Connection into the textbox and press Enter. Repeat steps and rename the public network adapter as Public Cluster Connection.
Click Start, click Run and type cmd in the text box. Click OK. IP information should display for all network adapters in the machine. Type ping ipaddress where ipaddress is the IP address for the corresponding network adapter in the other node.
Right-click My Computer, and click Properties. Click Network Identification. The System Properties dialog box displays the full computer name and domain. If you are using member servers and need to join a domain, you can do so at this time. Click Properties and follow the onscreen instructions for joining a domain. Close the System Properties and My Computer windows.
Click Users. Right-click Users, point to New, and click User. Type in the cluster name and click Next. Click Next and then click Finish to create this user. Select Properties from the context menu. Click Add Members to a Group. Click Administrators and click OK. This gives the new user account administrative privileges on this computer. Close the Active Directory Users and Computers snap-in. Setting Up Shared Disks The Quorum Disk The quorum disk is used to store cluster configuration database checkpoints and log files that help manage the cluster.
We make the following quorum disk recommendations: Create a small partition [A minimum of 50 megabytes MB to be used as a quorum disk. Dedicate a separate disk for a quorum resource.
As the failure of the quorum disk would cause the entire cluster to fail, we strongly recommend you use a volume on a RAID disk array.
Provide the drive letter for the quorum disk.. Right click My Computer, click Manage, and click Storage. Double-click Disk Management. Right-click unallocated disk space. Click Next twice. Enter the desired partition size in MB and click Next. Accept the default drive letter assignment by clicking Next. Click Next to format and create partition. Right-click the desired partition and select Change Drive Letter and Path. Select a new drive letter. Repeat steps 1 and 2 for each shared disk.
When finished, the Computer Management window should look like this. The more typical environment is shown in the below graphic. You would normally have a shared SCSI disk that both servers can have access to. You would have a public network that clients would connect to your server with, while a private network would be used to check the health of the network through a heartbeat.
This "heartbeat connection" can share the public network connection as well. There is also a cluster name, which can also float based on who owns the main server resources. When you deal with clusters, you will wish you had a healthy relationship with whoever deals out the IP addresses in your company. In SQL Server , this has been corrected and you must only license your active node. In SQL Server , the first node is considered the default instance.
The second node must use a named instance to install SQL Server. Notice that the virtual server name for the second SQL Server is not the same as the first node. So, you will have two choices, either upgrade all your web servers or applications to MDAC 2. Each node has drives that it primarily owns. I always give my drives a volume name where I can recognize who is the primary owner of the drive.
There is also a drive that is shared called the quorum drive. This drive is used to write logs to. If one node fails, the other node will take control of the quorum drive and read the logs to see where the node left off. CLB is not available as a component separate from Application Center Application Center The final option for load balancing and clustering under Windows is Microsoft Application Center , which is designed primarily for creating and managing Web farms. A Web farm is a collection of Web servers functioning as a cluster to present a common Web presence such as one or more Web sites, e-commerce sites, etc.
Application Center supports clusters of up to 16 nodes and does not require that server applications be written to support it. Application Center takes a different approach. You create an initial cluster controller that manages the cluster configuration information and contains all of the content for the Web services.
When you add other servers to the cluster, Application Center essentially clones the cluster controller's configuration and content to the other servers. The result is a cluster of Web server clones all functioning as a logical unit, providing load balancing and failover.
One of the primary benefits of using Application Center is the ease with which you can add nodes to the cluster, manage existing nodes, deploy new content, and manage the cluster overall. Another benefit is that Application Center handles all of the configuration for NLB for you, which saves a considerable amount of work. Before you jump on the Application Center bandwagon and start planning your deployment, however, you need to think about the potential costs.
Multiply that times the number of servers in your Web farm, and you can begin to see that Application Center requires a considerable financial commitment. Given its flexibility and power, however, it can be a bargain if server availability is critical to your operation. Conclusion A network isn't very useful if users can't access the data that you're storing on your servers. Although you can provide redundancy built into the server with things like RAID, sometimes that's not enough.
Sometimes it's useful to have completely redundant servers. Fortunately, you can provide such redundancy by using the clustering services that are available for your Windows servers.
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