HP LeftHand P4000 SAN Solutions - Manual (Page 269)

Glossary
The following glossary provides definitions of terms used in the LeftHand OS software
and the HP StoreVirtual Storage.
acting primary
volume The remote volume, when it assumes the role of the primary volume in a failover scenario.
Active-Passive A type of network bonding which, in the event of a NIC failure, causes the logical interface to
use another NIC in the bond until the preferred NIC resumes operation. At that point, data transfer
resumes on the preferred NIC.
Adaptive Load
Balancing A type of network bonding in which the logical interface performs load balancing of data
transmission.
application-managed snapshot
Snapshot of a volume that is taken while the application that is serving that volume is quiesced.
Because the application is quiesced, the data in the snapshot is consistent with the application's
view of the data. That is, no data was in flight or cached waiting to be written.
authentication
group For release 7.0 and earlier, identifies the client or entity accessing the volume. Not used in release
8.0 and later.
Auto Discover A feature in the CMC that automatically searches for storage systems on the subnet the CMC is
connected to. Any storage systems it discovers appear in the navigation window on the left side
of the CMC.
Bond0 Interface created for network interface failover and only appears after configuring for failover.
bonding Combining physical network interfaces into a single logical interface.
boot device Compact flash cards from which the storage system boots up. Also known as disk-on-modules or
DOMs.
CHAP Challenge-Handshake Authentication Protocol.
CLI Command-line interface. An interface comprised of various commands which are used to control
operating system responses.
clone point The snapshot that has two or more volumes related to it. A clone point is created when a
SmartClone volume is created from a snapshot or from snapshot temporary space.
cluster A cluster is a grouping of storage systems that create the storage pool from which you create
volumes.
CMC Centralized Management Console. See HP StoreVirtual Centralized Management Console.
communication
mode The unicast communication among storage systems and application servers.
community string The community string acts as an authentication password. It identifies hosts that are allowed
read-only access to the SNMP data.
Configuration
Summary The Configuration Summary displays an overview of the volumes, snapshots, storage systems,
and iSCSI sessions in the HP StoreVirtual Storage. It provides an overview of the storage network
broken out by management groups.
consolidating
snapshot Consolidating means the snapshot and/or volume is currently optimizing the movement of data
among snapshots due to a snapshot delete operation. Consolidating optimizes the amount of
space required to maintain the desired number of snapshots.
When a snapshot is in a consolidating state, there may temporarily be more snapshots listed
under a volume than expected. After the consolidating operation completes, the number of
snapshots retained will be as expected. This operation does not require more volume or snapshot
space.
data center Also known as a “Site.” A data center is a physical location in your environment where application
servers, SAN storage and network equipment reside. In the LeftHand OS Multi-Site software, a
data center is typically referred to as a site.
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