The difference between OS and application server clustering
August 12th, 2008
What is the difference between application server clustering and OS (operating system) clustering)? Generally, the OS (hardware clustering) only manages hardware and OS level failures. Backup servers are used when the primary server fails. The backup server assumes the role of the primary server in functionality. The IP address of the failed server is assigned to the backup. This process is an older, more time consuming way to perform a failover. Application server clustering, on the other hand, keeps the backup server in a standby mode. Rather than reassigning the failed server IP address, applications are designed to check for service failure on more than one destination host server.
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