HP Storage EVA Capacity Upgrades - Manual (Page 51)

30-10022-01 loop switch user guide 51
Glossary
ABTS Abort Basic Link Service.
AL_PA or Arbitrated Loop
Physical Address A one-byte value used to identify a port in an Arbitrated Loop topology. The value of the
AL_PA corresponds to bits 7:0 of the 24-bit Native Address Identifier.
CLI Command Line Interface. A command-based interface for configuring, managing, and
displaying switch settings.
CLS Close Primitive Signal. Sent by a port that is currently communicating on the loop, to close
communication to another port.
CRC Cyclic Redundancy Check. Used to check the integrity of a data frame.
DHCP Dynamic Host Configuration Protocol
EOF End Of Frame. A group of ordered sets used to mark the end of a frame.
FC-AL Fibre Channel Arbitrated Loop
Fibre Channel Fibre Channel is a data transfer interface technology that maps several common transport
protocols including IP and SCSI, allowing it to merge high-speed I/O and networking
functionality in a single connectivity technology. Fibre channel is an open standard as
defined by ANSI and OSI standards and operates over copper and fiber optic cabling at
distances of up to 10 Kilometers. It is unique in its support of multiple interoperable
topologies including point-to-point, arbitrated-loop and switching and it offers several
qualities of service for network optimization. With its large packet sizes, Fibre Channel is
ideal for storage, video, graphic and mass data transfer applications.
Frame A data unit containing a start-of-frame (SOF) delimiter, header, payload, cyclic
redundancy check (CRC), and an end-of-frame (EOF) delimiter. The payload can be
0-2112 bytes, and the CRC is 4 bytes.
Gb/s Gigabits per second.
Gigabit 1,062,500,000 bits per second in Fibre Channel.
HBA Host Bus Adapter. An interface between a server or workstation bus and the Fibre
Channel network.
IP Internet Protocol. The addressing part of TCP/IP.
LED Light-Emitting Diode. A status indicator on a switch.
LIM Loop Initialization Master
LIP Loop Initialization Primitive. A means to get an AL_PA address, to indicate a loop failure,
or to reset a port.
LISA Loop Initialization for Soft-Assigned (remaining) AL_PAs
OPN Open Primitive Signal. This is sent by a device that has won the arbitration process to
open communication with one or more ports on the loop.
OS Ordered Set. A group of low-level protocols used to manage frame transport, initialization,
and media access, and to distinguish Fibre Channel control information from data.
POST Powered On Self Test. A routine that the switch performs to test its components.
RAS Reliability, Availability, and Serviceability
SBOD™ Switched Bunch of Disks enclosure. A configuration with a single drive per port for higher
reliability, accessibility, and serviceability.
SCSI Small Computer System Interface. Standard interface for storage modules.