XBSA interface

(Informix Server specific term) ON-Bar and Data Protector

 

communicate with each other through the X/Open Backup

 

Services Application Programmer's Interface (XBSA).

XCopy engine

(direct backup specific term) A SCSI-3 copy command that allows

 

you to copy data from a storage device having a SCSI source

 

address to a backup device having a SCSI destination address,

 

thus enabling direct backup. The data flows from a source device

 

(either block or streaming, that is, disk or tape) to the destination

 

device (either block or streaming) through XCopy. This releases

 

the controlling server of reading the data from the storage device

 

into memory and then writing the information to the destination

 

device.

 

See also direct backup.

ZDB

See zero downtime backup (ZDB).

ZDB database

(ZDB specific term) A part of the IDB, storing ZDB related

 

information such as source volumes, replicas and security

 

information. The ZDB database is used for ZDB, instant recovery,

 

and split mirror restore.

 

See also zero downtime backup (ZDB).

ZDB to disk

(ZDB specific term) A form of zero downtime backup where the

 

replica produced is kept on the disk array as a backup of the

 

source volumes at a specific point in time. Multiple replicas,

 

produced using the same backup specification at different times,

 

can be kept in a replica set. A replica from ZDB to disk can be

 

restored using the instant recovery process.

 

See also zero downtime backup (ZDB), ZDB to tape, ZDB to

 

disk+tape, instant recovery, and replica set rotation.

ZDB to disk+tape

(ZDB specific term) A form of zero downtime backup where the

 

replica produced is kept on the disk array as a backup of the

 

source volumes at a specific point in time, in the same way as

 

with ZDB to disk. However, data in the replica is also streamed

 

to a backup medium, as with ZDB to tape. If this backup method

 

is used, data backed up in the same session can be restored

 

using the instant recovery process, the standard Data Protector

 

restore from tape, or on split mirror arrays, split mirror restore.

 

See also zero downtime backup (ZDB), ZDB to disk, ZDB to

 

tape, instant recovery, replica, and replica set rotation.

400Glossary