HP StorageWorks 2/64 HP StorageWorks Fabric OS 5.x Command Reference Guide (AA - Page 818

SPOF Single point of failure. Any component in a SAN whose malfunction could bring down the entire SAN. SSH Secure shell. Used starting in HP Fabric OS v4.1 to support encrypted telnet sessions to the switch. SSH encrypts all messages, including the client sending the password at login. Standard Translative Allows public devices to communicate with private devices that are directly connected to the Mode fabric. stealth mode A method used in some switches to simulate HP switches using QuickLoop. striping A RAID technique for writing a file to multiple disks on a block-by-block basis, with or without parity. switch A fabric device providing bandwidth and high-speed routing of data via link-level addressing. switch name The arbitrary name assigned to a switch. switch port A port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports. switch-to-switch authentication The process of authenticating both switches in a switch-to-switch connection using digital certificates. See also authentication, digital certificate. SWL Short wavelength. A type of fiber optic cabling that is based on 850 mm lasers and supports 1.0625 GB/sec. link speeds. Can also see the type of GBIC or SFP. See also LWL. syslog Syslog daemon. Used to forward error messages. T10 A standards committee chartered with creating standards for SCSI. T11 A standards committee chartered with creating standards for Fibre Channel. tachyon A chip that supports FC-0 through FC-2 on a single chip. target A storage device on a Fibre Channel network. See also initiator. TC Track changes. TCP/IP Transmission Control Protocol Internet Protocol. telnet A virtual terminal emulation used with TCP/IP. "Telnet" is sometimes used as a synonym for the HP Fabric OS CLI. tenancy The time from when a port wins arbitration in a loop until the same port returns to the monitoring state. Also referred to as "loop tenancy." throughput The rate of data flow achieved within a cable, link, or system. Usually measured in bps (bits per second or b/sec). See also BB fabric. tiering The process of grouping particular SAN devices by function and then attaching these devices to particular switches or groups of switches based on that function. Time Server A Fibre Channel service that allows for the management of all timers. topology As it applies to Fibre Channel technology, the configuration of the Fibre Channel network and the resulting communication paths allowed. There are three possible topologies: • Point to point-A direct link between two communication ports. • Switched fabric-Multiple N_Ports linked to a switch by F_Ports. • Arbitrated loop-Multiple NL_Ports connected in a loop. 818 Glossary