HP 6100 HP 4x00/6x00/8x00 Enterprise Virtual Array User Guide (5697-0733, Marc - Page 176
A Fibre Channel connector on a Fibre Channel device., IDX and TC.
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P param password PDM PDU physical disk That portion of the HSV controller termination code display that defines: • The 2-character parameter identifier that is a decimal number in the 0 through 30 range. • The 8-character parameter code that is a hexadecimal number. See also IDX and TC. A security interlock where the purpose is to allow: • A management agent to control only certain storage systems • Only certain management agents to control a storage system Power Distribution Module. A thermal circuit breaker-equipped power strip that distributes power from a PDU to Enterprise Storage System elements. Power Distribution Unit. The rack device that distributes conditioned AC or DC power within a rack. A disk drive mounted in a drive enclosure that communicates with a controller pair through the device-side Fibre Channel loops. A physical disk is hardware with embedded software, as opposed to a virtual disk, which is constructed by the controllers. Only the controllers can communicate directly with the physical disks. The physical disks, in aggregate, are called the array and constitute the storage pool from which the controllers create virtual disks. physical disk array port port-colored port_name power distribution module power distribution unit power supply preferred address preferred path protocol See array. A Fibre Channel connector on a Fibre Channel device. A convention of applying the color of port or red wine to a CRU tab, lever, or handle to identify the unit as hot-pluggable. A 64-bit unique identifier assigned to each Fibre Channel port. The port_name is communicated during the login and port discovery processes. See PDM. See PDU. An element that develops DC voltages for operating the storage system elements from either an AC or DC source. An AL_PA which a node port attempts to acquire during loop initialization. A preference for which controller of the controller pair manages the virtual disk. This preference is set by the user when creating the virtual disk. A host can change the preferred path of a virtual disk at any time. The primary purpose of preferring a path is load balancing. The conventions or rules for the format and timing of messages sent and received. Q quiesce The act of rendering bus activity inactive or dormant. For example, "quiesce the SCSI bus operations during a device warm-swap." R rack rack-mounting unit A floorstanding structure primarily designed for, and capable of, holding and supporting storage system equipment. All racks provide for the mounting of panels per Electronic Industries Alliance (EIA) Standard RS310C. A measurement for rack heights based upon a repeating hole pattern. It is expressed as "U" spacing or panel heights. Repeating hole patterns are spaced every 1.75 inches (44.45 mm) and based on EIA's Standard RS310C. For example, a 3U unit is 5.25inches (133.35 mm) high, and a 4U unit is 7.0inches (177.79 mm) high. 176 Glossary