HP StorageWorks Fabric OS 5.X Master Glossary (AA-RW7NA-TE, September 2005)

port name Auser-defined alphanumeric name for a port.
port_name Theuniqueid
entifier assigned to a Fibre Channel port. Communicated during
login and port discovery.
port swapping The ability to redirect a failed port to another port. This feature is available
in Fabric OS 4.1.0 and later.
POST Power
-on self-test. A series of diagnostic tests run by a switch after it is turned on.
PPID A unique static identifier for each blade in a b laded server. It resides on a
printed label and on an electronic tag on the card.
PPP Point-to-Point Protocol. The most po pular method for transporting IP packets over
a serial link b et ween a user and an ISP.
primary FCS Relates to the Secure Fabric OS feature. The primary fabric configuration server
switch actively manages security and configurations for all switches in the fabric.
See also b ackbone fabric, FCS,andbackup FCS.
primitive sequence An ordered set that is transmitted repeatedly and continuously. Primitive
sequences a re transmitted to indicate specific c onditions within or conditions
encountered by the receiver logic of an FC_Port.
See also OLS and NOS.
primitive signals An ordered set that indicates a ctions or events and requires just one occurrence
to trigger a response. IDLE and R_RDY are used in all three topologies: ARB,
OPN, and CLS. MRK is used in arbitrated loop.
principal switch The firstswitchtobootupinafabric.EnsuresuniquedomainIDsamongroles.
private device A device that supports arbitrated-loop protocol and can interpret 8-bit addresses
but cannot log in to the fabric.
private key Th e secret half of a key pair.
See also key, key pair, PKI,andpublic key cryptography.
private loop An arbitrated loop that does not include a participating FL_Por t.
private loop
device
A device that supports a loop and can understand 8-bit addresses but does
not log in to the fabric.
private NL_Port An NL_Port that communicates only with other private NL_Por ts in the same
loop and does not log in to the fabric.
protocol Adefined method and set of standards for communication. D etermines the type
of error checking, the data-compression method, how sending devices indicate
an end of message, and how receiving devices indicate receipt of a message.
pstate Port State Machine.
PSU Power supply unit. An electrical system that converts AC current from the wall
outlet to the DC current required by the computer circuitry.
public device A device that supports arbitrated-loop protocol, can interpret 8-bit addresses,
and can log in to the fabric.
public key The public half of a key pair .
See also key, key pair , PKI, private key,andpublic key cryptography.
public key cr yp-
tography
A t ype of cryptography that uses a key pair, with the t wo keys in the pair
called at different points in the alg orithm. The sender uses the recipient’s public
key to encrypt the message, and the recipient uses the recipient’s private key
to decrypt it.
See also key pair, PKI, private key,andpublic key.
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Glossary