By Hemantgiri S. Goswami
ISBN-10: 1849681228
ISBN-13: 9781849681223
With transparent step by step directions, quite a few actual international examples, and many screenshots, this booklet offers the entire aid and counsel you will want as you start to put in numerous SQL Server HA recommendations. while you are an SQL Server developer, or a approach administrator, or perhaps a beginner DBA, then this publication is for you. It purely calls for you to have a easy realizing of ways SQL Server works to get you thru the install of SQL Server HA.
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Extra info for Microsoft SQL Server 2008 High Availability
Sample text
Open the Failover Cluster Manager from Start | Administrative tools and add the Fully Qualified DNS name of the system of both the nodes—in our case, SQLNode1 and SQLNode2. 9. Select Run all tests (recommended) from the Testing Options. This will thoroughly test all the components we made available to build our cluster. If we select the Run only tests I select option, it will test selected components, which is not recommended. This is because the component that we have omitted may be the component that's blocking the path and preventing us from being able to install the cluster.
Components of clustering There are some components that we need to carefully consider before we go about designing cluster architecture and installing. Here are the components: [ 23 ] Understanding Windows Domains, Domain Users, and SQL Server Security Shared disk array As the name implies, the disks are shared. The reason behind using shared disk arrays is the fact that they are accessible from remote locations or clients and this is exactly what is required by cluster services. The cluster architecture forces us to use shared disk resources, as the disk to be used with the cluster environment should be accessible by any of the nodes.
This means if there is a four-node cluster with a disk witness, the total number of disks adds up to five as there are four disks on the system plus one witness disk; so, in this case, the cluster will continue to work if three or more votes come. [ 27 ] Understanding Windows Domains, Domain Users, and SQL Server Security This configuration is recommended where there is a two-node failover cluster or there is an even-node cluster configured. Please note that while configuring an even number of nodes, if the wizard automatically selects Node and Disk Majority, it will also select a witness disk.
Microsoft SQL Server 2008 High Availability by Hemantgiri S. Goswami
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