Specifications

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ATTO Technology Inc. iPBridge Installation and Operation Manual
Appendix C Glossary
More information is available through the Storage Networking Industry Association
( www.snia.org/education/dictionary ) and the IETF ( www.ietf.org ).
Term Definition
Access Control List
(ACL)
Access Control List: characteristic of an iSCSI target node on ATTO iPBridges
whereby iSCSI initiators allowed access to that target node are included on a list of
permitted initiators.
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
iSCSI node representation of a single iSCSI initiator or iSCSI target.
Each iSCSI target node
accessed through the Ethernet port on an iPBridge is identified by a unique world-wide
iSCSI-qualified name.
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