HP StorageWorks Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide (AA-RPHZF-TE, March 2004)

Glossary
246 Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide
participating mode
A mode within an L_port that allows the port to participate in loop activities. A port must have a valid AL_PA
or ALPA to be in participating mode.
PCM
An acronym for Polycenter Console Manager.
PCMCIA
An acronym for Personal Computer Memory Card Industry Association. An international association formed to
promote a common standard for PC card-based peripherals to be plugged into notebook computers. A PCMCIA
card, sometimes called a PC Card, is about the size of a credit card. It is used in the HSJ80 to load the controller
software.
See also program card, ACS.
PCR
An acronym for peak cell rate, the maximum transmission speed of a virtual connection. PCR is a required
parameter for the CBR service category.
peer-to-peer remote copy
See remote copy sets.
peripheral device
Any unit, distinct from the CPU and physical memory, that can provide the system with input or accept any
output from it. Terminals, printers, tape drives, and disks are peripheral devices.
planned failover
As applied to the Data Replication Manager, an orderly shutdown of the initiator site applications and
controllers for installation of new hardware, updating the software, and so on. The host applications are quiesced
and all write operations are permitted to complete before the shutdown. The controllers must be in synchronous
operation mode before starting a planned failover.
See also synchronous mode, unplanned failover.
PL_DA
or
PLDA
An acronym for Private Loop Direct Attach. PLDA is a Fibre Channel profile, a proper subset of arbitrated loop.
The PLDA profile (part of the Fibre Channel Standard), defines a specific way to implement arbitrated loop
topology. Not supported by DRM.
See arbitrated loop.
point-to-point connection
A network configuration in which a connection is established between two, and only two, terminal installations.
The connection may include switching facilities.
See N_port.
port
■ In general terms, a port is:
— A logical channel in a communications system.
— The hardware and software used to connect a host controller to a communications bus, such as a SCSI
bus or serial bus.
■ Regarding the controller, the port is:
— The logical route for data in and out of a controller that can contain one or more channels, all of which
contain the same type of data.
— The hardware and software that connect a controller to a SCSI device.