Computer Associates ARB6002700WF0. ..... - BRIGHTSTOR ARCSERVE 2000, Руководство пользователя

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Agent Features
Multistreaming for Windows, UNIX, Mainframe Linux, and Linux
If you have more than one drive and more than one volume to be backed up,
you can configure that system’s client agent to use multistreaming. With
multistreaming, you can take advantage of all available tape devices on the
system. Multistreaming works by splitting a single backup job into multiple
jobs that use all tape drives. As a result, multistreaming increases the overall
backup throughput compared with single-stream, sequential processing.
On a Windows server, multistreaming is performed at the volume level for
regular file systems (two volumes can run simultaneously on two separate
devices). For preferred shared folders, remote database servers, and Windows
NT, 2000, or XP agents, multistreaming is performed at the node level. On a
UNIX or Linux server, you can configure the multistreaming level.
You can have only as many jobs running simultaneously as the number of local
and remote devices or groups on the system. With multistreaming, one master
job is created, which triggers slave jobs for as many volumes as necessary.
When a job is finished on one device, another job is executed until there are
no more jobs to run. For more information on multistreaming, see the
Administrator Guide .
Multiplexing
Note: This feature does not apply to BrightStor ARCserve Backup for
Mainframe Linux.
Multiplexing is a process in which data from multiple sources is written to the
same media simultaneously. When a job that has multiple sources is
submitted with the multiplexing option enabled, it is broken into child jobs—
one for each source. These child jobs write data to the same media
simultaneously. For more information on multiplexing, see the
Administrator
Guide .
14 Client Agents Guide