HP StorageWorks P9000 Software Installation Manual page 120

HTTP HyperText Transfer Protocol
HTTPS HyperText Transfrer Protocol Security
HyperSwap Function for automatically switching, by using TPC-R, the I/O destination volume from the P-VOL
to the S-VOL during a failure or maintenance. This requires that both the P-VOL and S-VOL disk
controllers be connected to the same host. There are two types of HyperSwaps: Basic HyperSwaps
and GDPS (Geographically Dispersed Parallel Sysplex) HyperSwaps.
I
I/O Input/Output
ID identifier
initialization A parameter used for setting up the environment of the Business Continuity Manager agent at
parameter the startup of the agent. The following settings are available by using this parameter: port number,
reception wait time, host identification name, prefix, DAD ID on the local site, route list ID, device
number, and log output level.
initiator port A Fibre Channel interface port on the MCU. This port is connected to the RCU by a Fibre Channel
interface (FIBRE) cable.
inter-control unit A virtual channel established between CUs where physical paths exist. Once an inter-control unit
logical path logical path is established, communication (remote copying) is enabled between the P-VOL used
by TC/TCA in the MCU and the S-VOL used by TC/TCA in the RCU.
inter-disk controller A virtual channel established between a primary DKC and a secondary DKC when at least one
logical path physical path exists between any MCU in the primary DKC and any RCU in the secondary DKC.
Once an inter-disk controller logical path is established, communication (remote copying) is
enabled between the P-VOL used by UR in the primary DKC and the S-VOL used by UR in the
RCU.
IPv4 Internet Protocol version 4
IPv6 Internet Protocol version 6
ISPF interactive system productivity facility
J
JES startup A cataloged procedure to start JES (Job Entry System)
procedure
journal cache A memory cache installed in the DKC used by UR. Update data to a data volume may be saved
temporarily in memory as a journal cache during journal creation processing before it serves as
a journal.
journal group A group used for UR. A unit used to preserve consistency in the update sequence when updating
volumes.
L
LDEV logical device
local DKC One of the two disk controllers connected to the primary host in a 2DC configuration with
HyperSwap and UR.
local scan A function to acquire disk configuration information about the volumes on the local disk controller
that are recognized by the operating system (the Gen'ed volume).
log dataset A dataset which the log is written to
log level A level that controls the output of the following types of messages: messages, which are output
to the system log (SYSLOG) while the Business Continuity Manager agent is running, that show
the progress of the communication execution, and error messages that are output when storage
information is collected. This log level is specified by using the initialization parameter LOGLEVEL
of the Business Continuity Manager agent.
log stream The set of data to which the system logger service writes log data
120 Glossary