In today's competitive environment, data is the key asset of many businesses, and ensuring that data is always available and readily accessible is absolutely essential. Loss of data service could lead to lost productivity, revenue, and even customer loyalty. Organizations with a data availability strategy that relies on a single hardware device risk losing data access if that device goes offline.
NetApp Clustered Failover delivers a robust and highly available data service for business-critical environments. Installed on a pair of NetApp filers, NetApp Clustered Failover ensures data availability by transferring the data service of an unavailable filer to the other filer in the cluster. Often, the transfer of data service is transparent to end users and applications, and the data service is quickly resumed with no detectable interruption to business operation.
Delivering greater than 99.99% data availability, NetApp Clustered Failover can benefit any enterprise, workgroup, or e-commerce application that has stringent uptime requirements. Clustered Failover administration tasks are simple, intuitive, and easy to use, minimizing management overhead and reducing operator error. Collectively, they further enhance the total availability of the overall environment.
NetApp Clustered Failover constantly monitors the health of the clustered filers. If it detects a catastrophic hardware failure on a filer, it automatically initiates a failover operation to transfer the data service to its partner filer. Data integrity is ensured during the transfer. Once the failover operation completes, the takeover filer will immediately resume data service for the failed filer. The data service of the takeover filer is never impacted and is fully available during the entire failover operation. The takeover filer maintains this dual data-serving mode until an administrator initiates action to restore data service to its original state. The entire failover process is automatic, with no manual intervention required at any point.
Administrators most often take advantage of NetApp Clustered Failover to provide continuous data service during scheduled filer maintenance and upgrade by manually initiating a failover operation. Once the partner filer takes over the data service, the administrator can perform the planned tasks without any impact to end users. When a filer is ready to resume normal data operation, an administrator can select the optimal time and conditions for a giveback operation - a transfer of data service from a takeover filer back to the original filer. Alternatively, Clustered Failover can perform automatic giveback to the original filer when it detects the filer's readiness to resume operation. This allows the administrator to both further reduce manual extra intervention and increase uptime.