Sun Microsystems StorEdge 6920 System, Getting Started Manual

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Glossary 113
extent A set of contiguous blocks with consecutive logical addresses on a physical or
virtual disk.
failover and recovery The process of changing the data path automatically to an alternate path.
fault coverage The percentage of faults detected against all possible faults or against all faults
of a given type.
FC See Fibre Channel (FC) .
Fibre Channel (FC) A gigabit serial data-transfer protocol, deployed across a wide range of storage
hardware and commonly used for storage area network (SAN) configurations.
Fibre Channel switch A networking device that can send packets directly to a port associated with a
given network address in a Fibre Channel SAN. The Fibre Channel switches
are used to expand the number of servers that can connect to a particular
storage port. Each switch is managed by its own management software.
field-replaceable unit
(FRU) An assembly component that is designed to be replaced on site, without the
system having to be returned to the manufacturer for repair.
flash card or disk See USB flash card or disk .
FRU See field-replaceable unit (FRU) .
GUI Graphical user interface. In this product, users get access to the GUI through a
web browser.
HBA See host bus adapter (HBA) .
host bus adapter
(HBA) A controller board on the server that allows the server to attach to external
storage. See also
initiator .
host port A port on that connects to the service panel. See also storage port .
hot spare The drive used by a controller to replace a failed disk. See also dedicated hot
spare and array hot spare .
in-band traffic System management traffic that uses the data path between a host and a
storage device. See also
out-of-band traffic .
initiator On a Fibre Channel network, a host that requests transactions with storage
elements. Each connection represents a separate initiator, so if a host is
connected to the system through two HBAs, the system identifies two different
initiators. However, when using MPxIO in round-robin mode, multiple HBAs
are grouped together and the system identifies the group of HBAs as one
initiator.
I/O panel See service panel .