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Appendix
Appendix B Glossary
More information is available through the Storage Networking Industry Association
(
www.snia.org/education/dictionary
) and the IETF (
www.ietf.org
).
Term Definition
ACL Access Control List--refers to a target node.
broadcast domain PCs and servers send (broadcast) information out through an Ethernet domain.
Switches and routers may connect domains, but may not share information across
domains.
CHAP Challenge-Handshake Authentication Protocol: If
CHAP is enabled, the target
requires the initiator to negotiate CHAP authentication using the CHAP secrets
(passwords). An initiator may reject this negotiation.
DHCP As defined in RFC 2131, a protocol which assigns IP addresses to devices on a
local area network. The iPBridge is set up by default to request an IP address from
the DHCP server.
firmware Software stored in read-only memory (ROM) or programmable ROM (PROM);
firmware is often responsible for the behavior of a system when it is first switched
on
IETF Internet Engineering Task Force: The standards body responsible for Internet
standards such as SNMP and TCP/IP through a community of network designers,
operators, vendors and researchers concerned with the evolution and smooth
operation of the Internet
initiator device A component which originates a command
iSCSI Internet SCSI (Small Computer System Interface), a protocol to link data storage
facilities over the Internet or an intranet developed by the Internet Engineering Task
Force (IETF); carries SCSI commands over IP networks to facilitate data transfers
over intranets and manage storage over long distances
LUN Logical Unit Number: an identifier of a device
NAS Network Attached Storage: storage elements connected to a network to provide file
access services to computer systems; an NAS Storage Element includes an
engine to implement the file services and one or more devices to store data; NAS
elements may be attached to any type of network; an NAS host system uses a file
system device driver to access data and NAS systems interpret these commands
to execute the necessary internal file and device I/O operations
SCSI Small Computer Systems Interface: a processor-independent standard for system-
level interface between a computer and intelligent devices including hard disks,
tape, floppy disks, CD-ROM, printers, scanners, etc.
SNMP Simple Network Management Protocol: a standard for monitoring and managing
systems and devices in a network; data is defined by a MIB; functions supported
include the request and retrieval of data
SNTP Simple Network Time Protocol: uses a server to set the time and date over the
Ethernet port.
Target Node iSCSI synonym for zone
zone a group of mapped target devices which has a name, its own access control list,
and its own CHAP secrets