HP XP20000/XP24000 HP StorageWorks XP Disk Array Mainframe Host Attachment and - Page 65

Glossary AL-PA CHA CHPID command device CU CVS EMIF emulation mode ESCON failover FC FCA FC-AL FCP Arbitrated loop physical address. Channel Adapters. Channel path ID. A volume on the disk array that accepts HP StorageWorks Continuous Access or HP StorageWorks Business Copy control operations which are then executed by the array. Control Unit. Contains LDEVs and is approximately equivalent to SCSI Target ID. Custom volume size. CVS devices (OPEN-x CVS) are custom volumes configured using array management software to be smaller than normal fixed-size OPEN system volumes. Synonymous with VSC. OPEN-V is a CVS-based volume. ESCON multiple image facility or enhanced multiple image facility. A mainframe feature that allows multiple LPARs to share ESCON channel paths. See also ESCON, LPAR The LDEVs associated with each RAID group are assigned an emulation mode that makes them operate like OPEN system disk drives. The emulation mode determines the size of an LDEV. OPEN-3: 2.46 GB OPEN-8: 7.38 GB OPEN-9: 7.42 GB OPEN-E: 13.56 GB OPEN-K: Not available OPEN-L: 36 GB OPEN-M Not available OPEN-V: User-defined custom size Enterprise systems connection An optical interface used to connect the mainframe to the control unit; a predecessor to FICON. An operation that reverses replication direction so that the destination becomes the source and the source becomes the destination. Failovers can be planned or unplanned and can occur between DR groups, managed sets, fabrics or paths, and array controllers. Fibre Channel. A network technology primarily used for storage networks. Fibre Channel adapter. Fibre Channel arbitrated loop. Fibre Channel protocol. XP Disk Array Mainframe Host Attachment and Operations Guide 65