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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.
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.
disaster recovery
site
Similar to a secondary site, the disaster recovery site is used to operate the SAN in the event of
a disaster.
disk status Whether the disk is:
• Active - on and participating in RAID
• Uninitialized or Inactive - On but not participating in RAID
• Off or Missing - Not on
• DMA Off - disk unavailable due to faulty hardware or improperly seated in the chassis
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