HP EVA Cluster Extension Software Installation Guide (5697-2446, July 2013)

Glossary
array A synonym of storage array, storage system, and virtual array. A group of disks in one or more
disk enclosures combined with controller software that presents disk storage capacity as one or
more virtual disks.
CA HP EVA Continuous Access. CA lets you create and maintain duplicate copies of local logical
volumes on a remote storage system.
CLI Command-line interface. An interface comprised of various commands which are used to control
operating system responses.
command device A volume on the storage system that accepts HP Continuous Access or HP Business Copy control
operations that are then executed by the storage system.
CV EVA HP Command View Enterprise Virtual Array, a software product for managing EVA arrays.
Command View runs on a Windows-based management workstation.
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.
See also VSC..
destination The targeted recipient (for example, array or virtual disk) of replicated data.
disk group A named group of disks selected from all the available disks in a disk array. One or more virtual
disks can be created from a disk group. Also refers to the physical disk locations associated with
a parity group.
DLL Dynamic-link library.
DR Data replication.
DR group Data replication group. A named group of virtual disks selected from one or more disk groups
so that they replicate to the same destination, fail over together if a member virtual disk fails, and
preserve write order within the group.
DSM Device Specific Module.
enhanced
asynchronous
mode
A write mode in which all host write I/Os are added to the write history log. The controller then
acknowledges that data has been written at the source before being copied at the destination.
EVA Enterprise Virtual Array. An HP disk array product that allows pooled disk capacity to be presented
to hosts as one or more variably sized physical devices. An EVA consists of disks, controllers,
cables, power supplies, and controller software. Storage system, virtual array, and storage array
are other names for an EVA.
See also virtual disk..
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.
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.
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.
ITRC HP IT Resource Center.
JRE Java Runtime Environment.
LU Logical unit.
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