External raid controller, Extranet, Extremeraid – Avago Technologies AcceleRAID 170LP User Manual
Page 67: Failback, Failover

Glossary
Manual No. DB11-000024-00
G-9
the “2” and “5” refer to the coaxial cable segment length (the 185 meter
length has been rounded up to “2” for 200); the “F” represents fiber optic
cable.
External RAID Controller
A RAID controller in its own enclosure, rather than incorporated into a PC
or server. External RAID controllers are often referred to as a Bridge RAID
Controller. Mylex SANArray FL, FF, FFx, and Pro FF2 controllers are
external RAID controllers. Compare with Internal RAID Controller.
Extranet
A private network that uses Internet protocols and the public
telecommunication system to securely share part of a business's information
or operations with suppliers, vendors, partners, customers, or other
businesses. An extranet can be viewed as part of a company's Intranet that is
extended to users outside the company.
eXtremeRAID™
A family of Mylex RAID controllers which offer uncompromising fault
tolerance, data availability, superior configuration, and management
flexibility. The eXtremeRAID controllers use driver technology, which has
won tpm-C benchmarks worldwide. With this technology, eXtremeRAID
controllers provide the highest performance and most flexible RAID solution
available today.
Failback
Restoring a failed system component’s share of a load to a replacement
component.
Failover
A mode of operation for failure tolerant systems in which a component has
failed and a redundant component has assumed its functions.