Glossary

HP StorageWorks Virtual ArrayLUN

A logical partition of a physical disk within an HP StorageWorks Virtual Array. LUNs are entities that can be replicated in the HP StorageWorks Business Copy VA configuration, or can be used as standalone entities.

See also BC VA and replica.HP VPO

See OVO.

ICDA (EMC Symmetrix specific term) EMC's Symmetrix Integrated Cached Disk Arrays (ICDA) is a disk array device that combines a set of physical disks, a number of FWD SCSI channels, an internal cache memory, and control and diagnostic software commonly referred to as the microcode.

IDB

The Data Protector Internal Database is an embedded database located on the Cell Manager that keeps information regarding which data is backed up, on which media it is backed up, how backup and restore sessions are run, and so onwhich devices and libraries are configured.

IDB recovery file

An IDB file (obrindex.dat) with information about IDB backups, media, and devices used for the backup. This information can significantly simplify

IDB recovery. It is recommended to relocate the file, together with IDB transaction logs, to a separate physical disk from other IDB directories, and, additionally, to make an additional copy of the file.

importing media

Aprocess that re-reads all data about backup sessions which are on the medium back into the IDB. This then allows for fast and convenient access to the data on the media.

See also exporting media.incremental backup

A backup that selects only files that have changed since a previous backup. Several levels of incremental backup are available, which enables detailed control of restore chain length.

See also backup types.

incremental backup (Microsoft Exchange Server specific term)

A backup of the Microsoft Exchange Server data that has changed since the last full or incremental backup. With the incremental backup, only the transaction log files are backed up.

See also backup types.

incremental mailbox backup

An incremental mailbox backup backs up all the changes made to the mailbox after the last backup of any type.

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