HP StorageWorks XP Disk Array Mainframe Host Attachment and Operations Guide (A5951-96154, September 2010)

Glossary
AL-PA Arbitrated loop physical address.
CHA Channel Adapters.
CHPID Channel path ID.
command device 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.
CU Control Unit. Contains LDEVs and is approximately equivalent to SCSI Target ID.
CVS 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.
EMIF 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
emulation mode 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
ESCON Enterprise systems connection An optical interface used to connect the mainframe
to the control unit; a predecessor to FICON.
failover 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.
FC Fibre Channel. A network technology primarily used for storage networks.
FCA Fibre Channel adapter.
FC-AL Fibre Channel arbitrated loop.
FCP Fibre Channel protocol.
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