Well, according to Informix, onbar has a better functionality than ontape; it can perform parallel backup and restore and that would be beneficial to overall performance.
根据Informix的说法，onbar具有比ontape更好的功能；它可以执行并行备份和恢复，将对整体性能有益。
Parallel backups allow the processing of several dbspaces ($ONCONFIG parameter BAR_MAX_BACKUP) simultaneously, thus reducing the overall backup time if the infrastructure is adequate.
并行备份允许同时进行几个dbspaces 备份（由 $ONCONFIG参数 BAR_MAX_BACKUP 控制），如果基础设施够用，那么这样做可缩短总体备份时间。
During a parallel backup, whether it is a standard backup (onbar -b) or whole-system backup (onbar -b -w), multiple processes run simultaneously and back up data to separate dbspaces.
在并行备份期间，不管是标准备份(onbar -b)还是全系统备份(onbar - b- w)，都是多个进程同时运行，并将数据备份到不同的dbspace中。
For both types of backups (whole system and parallel) you will be able to specify the backup level, for instance, if this should be a full or an incremental backup.
对于这两种类型的备份(全系统备份和并行备份)，都可以指定备份级别，例如，如果此备份应该是一个完全备份或增量备份。
For example, if the largest dbspace is backed up in parallel to other smaller dbspaces, the complete system backup will take less time.
例如，如果对最大的dbspace和其它较小的dbspace并行地进行备份，则整个系统备份花费的时间更少。
The ontape utility backs up the dbspaces sequentially, where as onbar can backup dbspaces in parallel.
ontape实用工具可以串行化备份dbspace，而onbar 可以并行备份 dbspace。
The individual backup steps are performed in parallel.
个别的备份步骤是被平行地实行。
The individual backup steps are performed in parallel.
个别的备份步骤是被平行地实行。
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