HP StorageWorks XPath OS 7.4.X Administrator Guide (AA-RVHDD-TE, February 2006)

XPath OS 7.4.x administrator guide 115
SAN port count
The number of ports available for connection by nodes in the entire SAN.
scalability
One of the properties of a SAN; the size to which a SAN topology can grow port and switch counts with
ease.
SCN
State change notification. Used for internal state change notifications, not external changes. This is the
switch logging that the port is online or is an Fx_Port, not what is sent from the switch to the Nx_Ports.
SCR
State change registration. Extended Link Service (ELS) requests the fabric controller to add the N_Port or
NL_Port to the list of N_Ports and NL_Ports registered to receive the Registered State Change Notification
(RSCN) Extended Link Service.
SCSI
Small Computer Systems Interface. A parallel bus architecture and a protocol for transmitting large data
blocks to a distance of 15 to 25 meters.
sequence
A group of related frames transmitted in the same direction between two N_Ports.
sequence initiator
The N_Port that begins a new sequence and transmits frames to another N_Port.
sequence recipient
Serializing/deserializing circuitry. A circuit that converts a serial bit stream into parallel characters and vice
versa.
serial
The transmission of data bits in sequential order over a single line.
SFP
Small-form-factor pluggable. A transceiver used on 2–GB/sec switches that replaces the GBIC.
soft zone
A zone consisting of zone members that are made visible to each other through client service requests.
Typically, soft zones contain zone members that are visible to devices using Name Server exposure of zone
members. The fabric does not enforce a soft zone. Note that well-known addresses are implicitly included
in every zone.
SSH
Secure shell. Used starting in HP StorageWorks Fabric OS 4.1 to support encrypted telnet sessions to the
switch. SSH encrypts all messages, including the client sending the password at login.
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.