Glossary - HP XP20000/XP24000 Operation Manual

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