Storage terms starting with P

49 terms

(PC)NFS Personal Computer Network File System.
Pack slip A lateral slip of selected tape windings causing high or low spots (when viewed with tape reel laying flat on one side) in an otherwise smooth tape pack.
package alert Time at which a message is sent indicating a problem with a package.
package event A package condition such as a failure that causes a notification message to be sent. Package events can be accompanied by alerts, but not alarms.
package recovery group A set of one or more packages with a mapping between their instances on the cluster and their instances on the Recovery Cluster.
Packet Protocol/Packetized SCSI This Ultra320 SCSI feature speeds the transfer of data, command, and status packets over earlier generations of SCSI.
packet trace A facility for tracing network traffic that is directed to a filer. See also "network trace."
panic (PA-nik) Sudden extreme anxiety or fear that may cause irrational thoughts or actions.
Parallel Technology An interface that allows a hard drive to receive multiple bits of information at the same time through short, wide cables carrying multiple signals.
Parity A form of data protection used by RAID level 5 to recreate the data of a failed drive in a disk array.
parity checking A method of data verification. Parity information is used to reconstruct data.
parity disk Disk on which parity information is stored for a RAID group.
Partition A partition is an individual section of computer storage media such as a hard drive.
partner A member of a clustered pair. From the point of view of the local filer, the other filer in the cluster is the partner. See also "takeover partner."
partner mode The method used to communicate through the command-line interface with the failed filer in a cluster during a takeover.
PAV (Parallel Access Volume) an IBM feature that allows multiple applications to access the same data at the same time.
PCB carrier Printed Circuit Board carrier. The unit that slides out from the chassis of a NetApp appliance and might contain (depending on the PCB carrier) expansion…
PCI Peripheral Component Interface (Interconnect). A high-speed interconnect local bus used to support multimedia devices.
PCI (Peripheral Component Interconnect) A local bus standard developed by Intel Corporation that is included in most modern PCs.
PCI-X (Peripheral Component Interconnect Extended) A computer bus technology that moves twice the amount of data at twice the speed of a PCI bus.
PDC Plume Data Center, AEDC, TN.
permanent virtual circuit (PVC) A network connection with a static route defined in advance, usually by manual setup.
permissions Authorization to perform operations associated with a shared resource, such as a file, directory, or printer.
persistent connection A connection between two networked devices that remains opened after the initial request is complete, to handle additional requests.
PET A NPC controlled by a player such as a Wolf, Infernal, and so on.
Petabyte A measure of data size. One petabyte is equivalent to 1,000 terabytes.
physical data replication An on-line data replication method that duplicates I/O writes to another disk on a physical block basis.
planned downtime An anticipated period of time when nodes are taken down for hardware maintenance, software maintenance (OS and application), backup, reorganization…
Point of Presence (POP) A remote location that provides network connectivity back to the core of the network for users within its service area.
Point-to-Point Direct connection between the backplane and the storage device, allowing for the high-performance, full utilization of bandwidth.
polymer (PAH-lih-mer) A molecule made up of small identical molecules called monomers. The monomers are joined together in a repeating pattern.
POP Contraction of "Repopulation", often used as a shortened term for the re-spawn of monsters.
Popped strand A strand of tape protruding from the edge of a wound tape pack. Print through: The condition where low frequency signals on one tape winding imprint…
Port An implanted device through which blood may be withdrawn and drugs may be infused without repeated needle sticks. Also called port-a-cath.
Post After; later.
power supply unit (PSU) The replaceable device that supplies power to a NetApp appliance.
power-on self-tests (POST) A series of diagnostic tests performed by a computer when it is turned on.
PowerPath A host-based software product from Symmetrix that delivers intelligent I/O path management.
prefetch The process of retrieving and caching data before it is requested by the client.
primary package The package that normally runs on the cluster in a production environment.
Privileges A clinician's right to practice his or her profession, such as medicine or surgery, at a particular hospital or health care facility.
proxy mode The default mode of operation for NetCache in which the cache serves all users who set up their browsers to use NetCache as their proxy.
proxy server A server that receives requests intended for another server and that acts on the client's behalf (as the client's proxy) to obtain the requested service.
PSU Power supply unit. The replaceable device that supplies power to a NetApp appliance.
PTP (Pass-Through-Port) allows cartridges to be passed between StorageTek robotic units.
pushbutton failover Use of the cmrecovercl command to allow all package recovery groups to start up on the Recovery Cluster following a significant cluster event on the…
PV links A method of LVM configuration that allows you to provide redundant disk interfaces and buses to disk arrays, thereby protecting against single points of…
PVC Permanent virtual circuit. A network connection with a static route defined in advance, usually by manual setup.
PVOL (Primary Volume) A primary volume configured in an XP series disk array that uses Continuous Access.