HP P6000 Cluster Extension Software Administrator Guide (5697-2274, November 2012)

FC connection A FC path between two storage systems or between a host and its storage. A connection is made
up of multiple FC links.
fencing The mechanism that prevents data corruption by removing an errant node from a cluster.
Fibre Channel A data transfer architecture designed for mass storage devices and other peripheral devices that
require high bandwidth.
full copy The process of copying all data written on a source virtual disk directly to the destination virtual
disk. If a data block contains all zeros, a zeroing message is sent to the destination array's virtual
disk for the corresponding data block. This minimizes the amount of data that must be written to
the destination virtual disk. When a full copy is complete, the source and destination virtual disks
contain the same data (synchronized).
GB Gigabyte. A unit of storage, abbreviated as G or GB, equal to 1,024 Megabytes.
GUI Graphical user interface.
HBA Host bus adapter.
heartbeat A periodic synchronization signal issued by cluster software or hardware to indicate that a node
is an active member of the cluster.
high availability
(HA)
Redundant systems, software, and information technology processes to reduce the risk of downtime.
No single point of failure.
home A DR group that is the preferred source in a replication relationship. By default, home is the
original source, but it can be set to the destination DR group.
host A computer that runs user applications and uses (or potentially uses) one or more virtual disks
that are created and presented by the array controller.
HSV Hierarchical Storage Virtualization. The name given to the virtualization controller architecture.
iLO Integrated Lights Out
ISL Intersite link or interswitch link. The abbreviation is context sensitive.
JRE Java Runtime Environment.
leveling Distribution of all user data within the virtual disks across all physical disks within the disk group.
local site Controller pair residing at the data center that contains the source data. A storage system may
be considered a primary site for some vdisks and an alternate site for other vdisks.
See also primary site.
log Storage that is used for logging.
logging Usually context-sensitive. In HP P6000 Continuous Access, logging refers to the history of host
write commands (and data) when the destination array is not accessible. If failsafe mode is
enabled, logging does not occur.
LU Logical unit.
LUN Logical unit number.
LVM Logical Volume Manager.
managed set A selection of resources grouped together for convenient management. For example, you can
create a managed set to manage all DR groups whose sources reside in the same rack.
management
server
A server on which HP Enterprise Virtual Array management software is installed, including HP
P6000 Command View and HP Replication Solutions Manager, if used. A dedicated management
server runs EVA management software exclusively. Other management servers include general
purpose servers, HP ProLiant Storage Server (NAS) models, and the HP OpenView Storage
Management Appliance.
MB Megabyte.
merge The act of transferring the contents of the write history log contents to the destination virtual disk
to synchronize the source and destination.
MMC Microsoft Management Console.
MNS Majority node set.
MSCS Microsoft Cluster Service.
72 Glossary