Glossary-3GlossaryeventA notification or alert from the system indicating that a change hasoccurred.event logA file used to maintain information about prior controller activitiesor errors.event notificationThe means used by the system to communicate information aboutevent occurrence.Ffault toleranceThe ability of a system to keep working in the event of hardware orsoftware faults. Fault tolerance is usually achieved by duplicatingkey components of the system.fault-tolerant arraysArrays that have duplicate components (RAID 1 and RAID 10).GGlobal SpareA spare hard disk that automatically replaces a failed hard disk onany array associated with any HBA.Hhard diskA physical hard disk on a SCSI bus.host adapterElectronic circuitry that supports I/O to storage devices, but whichdoes not support RAID.HostRAIDIntelligent RAID on chip. Adaptec product that adds entry-levelRAID functionality to SCSI ASICs and host bus adapters.
