Assuming we back up as depicted above sunday full backup , monday to saturday we do incremental backups 假定我们像上面描述的那样执行了备份星期天执行完全备份,星期一至星期六执行增量备份。
After completing an initial backup , any subsequent jobs only require the resources needed for an incremental backup 在完成了第一次备份之后,任何接续的工作只需要给一次渐近式备份所需要的资源。
Cumulative incremental backup on the other hand , backs up all the blocks used since the most recent backup at level n - 1 or lower 另一方面,累积增量备份将备份自最近在级别n - 1或更低级别上进行备份以后使用的所有数据块。
Applying a level - 0 - backup and then incremental backups will be much faster than having to rollforward through a large range of logical logs 先应用level - 0 - backup ,然后再进行增量备份,这将比通过大量逻辑日志进行前滚更快。
If you want to perform both types of back - ups , complete the steps two times ; one time for the full backup , and one time for the incremental backup 如果要执行这两种类型的备份,必须将本过程中的各步骤执行两次:一次用于完全备份,另一次用于增量备份。