HP D2D2502i Manuel d'utilisateur télécharger pdf (Page 167)

Glossary

Autoloaders An autoloader is a Virtual Tape Device that has a single tape drive and multiple storage slots.

(A library has multiple tape drives.) Each storage slot contains a cartridge that can be allocated

to a specific backup task; for example, one cartridge can hold Monday's data, another can hold

Tuesday's data, and so on. In this way, backup applications are able to implement tape rotation

strategies that accommodate differing backup requirements for daily, weekly, monthly, yearly

backups.

Backup devices

and slots

See Virtual Tape Devices.

CIFS Common Internet File System (CIFS) is a protocol for interfacing to hosts on a Windows network.

The HP StoreOnce Backup System supports this interface for connecting to NAS targets from a

Windows network.

Deduplication Data deduplication compares blocks of data being written to the backup device with data blocks

previously stored on the device. If duplicate data is found, a pointer is established to the original

data, rather than storing the duplicate data sets. This removes, or “deduplicates,” the redundant

blocks. See also the HP StoreOnce Backup System Concepts Guide.

The main benefit of deduplication is that it is possible to store more data and retain data for

longer on each device. The host using the device has access to a greater depth of historical data

that would otherwise have been archived offline.

Figure 55 Data stored after deduplication

Emulation types HP StoreOnce products emulate a range of physical Tape Autoloaders or Tape Libraries. Supported

emulation types are listed below:

• HP 1x8 G2 Autoloader (HP D2D2500)

• HP MSL2024 Library

• HP MSL4048 Library

• HP D2DBS Library

167

1 2 ... 162 163 164 165 166 167 168 169 170 171 172 ... 177 178

Pas de commentaire

HP D2D2502i Manuel d'utilisateur Page 167