HP XP P9500 HP P9000 Auto LUN User Guide (AV400-96385, October 2011) - Page 62

Glossary AL-PA BC BC Z bit CHA CLI CLPR Cnt Ac-J Cnt Ac-J Z Cnt Ac-S Cnt Ac-S Z command device CT group CU CVS C-Track DKA DKC DKU ESW FC-AL fence level Fibre Channel FICON HBA HDD LDKC Arbitrated loop physical address. A 1-byte value that the arbitrated loop topology uses to identify the loop ports. This value becomes the last byte of the address identifier for each public port on the loop. P9000 or XP Business Copy. An HP application that provides volume-level, point-in-time copies in the disk array. The version of Business Copy that supports mainframe volumes. The basic unit of data in a binary numbering system (binary digit), represented by a 0 or a 1. Eight bits equals one byte. Channel adapter. A device that provides the interface between the array and the external host system. Occasionally, this term is used synonymously with the term channel host interface processor (CHIP). Command-line interface. An interface comprised of various commands which are used to control operating system responses. Cache logical partition. P9000 or XP Continuous Access Journal software. The version of Continuous Access Journal that supports mainframe volumes. P9000 or XP Continuous Access Synchronous software. The version of Continuous Access Synchronous that supports mainframe volumes. A volume in the disk array that accepts Continuous Access, Business Copy, or P9000 for Business Continuity Manager control operations, which are then executed by the array. Consistency group. Control Unit. Used to organize the storage space attached to the disk controller ( DKC). You can group similarly configured logical devices (LDEVs) with unique control unit images (CUs). CUs are numbered sequentially. The disk array supports a certain number of CUs, depending on the disk array model. Each CU can manage multiple LDEVs; therefore, both the CU number and the LDEV number are required to identify an LDEV. Custom volume size. CVS devices (OPEN-x CVS or 3390-x CVS) are custom volumes configured using array management software to be smaller or larger than normal fixed-size OPEN or mainframe system volumes. Synonymous with volume size customization (VSC). OPEN-V is a CVS-based volume. Continuous Track. An HP software program that detects internal hardware component problems on an array and automatically reports them to HP Support Services. Disk adapter. Disk controller. Disk Unit. Express switch adapter. Fibre Channel arbitrated loop. A method of setting rejection of P9000 or XP Continuous Access write I/O requests from the host according to the condition of mirroring consistency. A data transfer architecture designed for mass storage devices and other peripheral devices that require high bandwidth. Fibre connectivity. An FC layer 4 protocol used to map mainframe channel command and data I/O operations onto standard FC infrastructure, protocol, and FC services. Host bus adapter. Hard disk drive. Logical disk controller. 62 Glossary