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 |
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 | |
| 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 |
| 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 |
| level interface between a computer and intelligent devices including hard disks, |
| tape, floppy disks, |
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 |
iv Appendix