Compaq StorageWorks Data Replication Manager HSG80 ACS Version 8.5P Operations Guide

G–8 Compaq StorageWorks Data Replication Manager HSG80 ACS V8.5P Operations Guide
GLM An abbreviation for the Gigabit Link Modules used in Fibre Channel long
distance applications. The GLMs provide the ability to increase the fiber
optic cable transmission distances from10 KM to ???
hard address The ALPA which an NL_Port attempts to acquire during loop initialization.
heterogeneous host
support
Also called noncooperating host support. This term expresses the ability to
share storage between two similar (or dis-similar) hosts by way of storage
partitioning.
HIPPI–FC An acronym expressing the high-performance parallel interface (HIPPI) over
the Fibre Channel. HIPPI is a media-level, point-to-point, 12 channel,
full-duplex, electrical/optical interface.
initiator A term that is defined as:
1. A SCSI device that requests an I/O process to be performed by another
SCSI device, namely, the SCSI target. The controller is the initiator on the
device bus.
2. For subsystems using the disaster-tolerant Data Replication Manager
solution, initiator is the site that is the primary source of information. In
the event of a system outage, the database would be recovered from the
target system.
See also target.
IP address An abbreviation for Internet Protocol Address. The IP address is a number
that is used as the address specifying a particular computer connected to the
internet.
latency The amount of time required for a transmission to reach its destination.
L_port A node or fabric port capable of performing arbitrated loop functions and
protocols. NL_Ports and FL_Ports are loop-capable ports.
Link A connection between two adjacent Fibre Channel ports consisting of a
transmit fibre and a receive fibre. An example would be the connection
between the Fibre Channel switch port and the HSG80 controller.
See also connection.
Logical Block Number See LBN.