Overland Storage SnapServer Administrator's Manual page 252

SnapServer 7.0 Administrator's Guide
Ethernet Port
The port on a network card to provide Ethernet access to the computer.
Event
Any significant occurrence or error in the system that may require notifying a system
administrator or adding an entry to a log.
Expansion Slot
Area in a computer that accepts additional input/output boards to increase the capability of
the computer.
F_port
A Fabric port within a Fibre Channel switch that provides a point-to-point link attachment
to a single N_Port. F_Ports are intermediate ports in virtual point-to-point links between
end ports, for example N_Port to F_Port to F_Port to N_Port using a single Fibre Channel
fabric switch.
Failback
Failback occurs when a path with a higher priority than the currently active path is
restored. In this case, I/O will "fail back" to the higher priority path once it is available
again.
Failover
A strategy that enables one Ethernet port to assume the role of another port if the first port
fails. If a port fails on a SnapServer, the second port assumes its network identity (if the
two Ethernet cards have been configured for failover). When the port comes back online, the
original identities are restored. Failover is possible only in a multi-Ethernet configuration.
Failover/Failback
A combination of Failover and Failback. When a preferred path becomes unavailable,
another path is used to route I/O until the preferred path is restored. In this case I/O will
"fail back" to the preferred path once it is available again.
FC-AL
Short for Fibre Channel Arbitrated Loop. An FC-AL is a Fibre Channel network in which up
to 126 systems and devices are connected in a loop topology, with each transmitter
connecting to the receiver of the device on its logical right. The Fibre Channel Arbitrated
Loop protocol used for transmission is different from Fibre Channel switched and point-to-
point protocols. Multiple FC-AL loops can be connected via a fabric switch to extend the
network.
Fibre Channel
Fibre Channel (FC) is a gigabit-speed network technology which transports SCSI
commands over Fibre Channel networks. Fibre Channel was primarily concerned with
simplifying the connections and increasing distances, but later designers added the goals of
connecting SCSI disk storage, providing higher speeds and far greater numbers of
connected devices.
Filesystem
See NFS.
10400317-001 10/2011
©2010-11 Overland Storage, Inc.
GL-6