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Fault Tolerant Servers
Achieving near-zero downtime is for mission-critical businesses that cannot afford a single moment of failure. NEC Fault Tolerant (FT) servers provide an innovative solution to address planned and unplanned downtime for your most important applications. The FT servers deliver exceptional uptime through dual modular hardware redundancy and help maximize your business outcomes. The servers provide continuous availability through hardware redundancy in all components: Processors, memory, motherboards, I/O, hard disk drives, and cooling fans.
NEC’s fault tolerant servers are designed with innovative technology that enables continuous availability for a solution with up to 99.999% system uptime while providing data integrity and exceptional performance.
GeminiEngine™ — the Heart of Lockstep Processing
The heart of the dual-modular redundancy architecture for the FT server is its GeminiEngine™ chipset, a feature specially engineered to synchronize redundant components and prevent CPU performance degradation due to hardware redundancy control. The GeminiEngine feature enables "lockstep" processing, allowing the redundant components to process the same instructions simultaneously, and thereby eliminating potential failure points for continuous processing.
Active Upgrade™
Active Upgrade™ is a system management technology that allows the administrator to perform routine software maintenance with minimal interruption.* This technology feature addresses planned server downtime necessary to install upgrades and enhancements to operating systems, service packs, applications, and system software. The updating process has much less impact to business operations with Active Upgrade by splitting the fully redundant system into two independently running servers and enabling online upgrades+. As an innovative approach to address a top concern of IT departments on dealing with the monthly patches issued by Microsoft, Active Upgrade ensures the availability of the Windows operating system.
* Active Upgrade™ is available on the Windows models only.
+ Some non-NEC, third-party software applications may require a full-server reboot.
Rapid Disk Resync (RDR)
The Rapid Disk Resync (RDR) is a disk synchronization technology that enables the disks to be resynchronized in a short period of time when their mirror has been broken due to a system failure or system maintenance. The RDR resumes disk mirroring by performing quick copies of only data changes, rather than entire disk data, thereby minimizing the time that the system runs with non-redundant disk system.
* The RDR is available on the Windows models only.
