Glossary–20
director product manager user guide
Glossary
StorageWorks HA-Fabric Manager (HAFM) server
Notebook computer shipped with a director to run the HAFM, Director 2/64 Product Manager
applications.
subnet mask
Used by a computer to determine whether another computer with which it needs to
communicate is located on a local or remote network. The network mask depends upon the
class of networks to which the computer is connecting. The mask indicates which digits to
look at in a longer network address and allows the router to avoid handling the entire address.
switchover
Changing a backup FRU to the active state, and the active FRU to the backup state.
switch priority
Value configured into each switch in a fabric that determines its relative likelihood of
becoming the fabric’s principal switch.
system automation for operating system 390 (SA OS/390)
IBM-licensed software that provides System/390 Parallel Sysplex management, automation
capabilities, and integrated systems and network management. SA OS/390 manages host,
remote processor, and I/O operations. SA OS/390 integrates the functions of Automated
Operations Control for MVS, ESCON Manager, and Target System Control Facility.
system services processor (SSP)
Controls the RS-232 maintenance port, the Ethernet port, and the operator panel of a Fibre
Channel director.
TCP/IP
See transmission control protocol/internet protocol.
topology
Logical and/or physical arrangement of stations on a network.
transmission control protocol/internet protocol (TCP/IP)
A suite of communication protocols used to connect host systems to the Internet. See also
network address.
trap
Unsolicited notification of an event originating from an SNMP managed device and directed to
an SNMP network management station.
