差异备份

• Differential partial backup
  部分差异备份
• Using differential backups
  使用差异备份
• A differential backup skips forward to when the differential backup was taken
  差异备份将向前跳到进行差异备份的时间点。
• And the differential database backup is the ninth backup set on the device
  差异备份追加到包含完整数据库备份的备份设备上。
• Unique identifier of the base backup on which a differential backup will be based
  差异备份所基于的基准备份的唯一标识符。
• Data extents changed after this lsn will be included in a differential backup
  在此lsn之后更改的数据区将包含在差异备份中。
• Including differential backups in the backup strategy can help reduce the overhead
  在备份策略中加入差异备份可有助于减少开销。
• Differential backups are not supported for full - text catalogs in fat32 file systems
  Fat32文件系统不支持对全文目录进行差异备份。
• A differential partial backup of a read - only database contains only the primary filegroup
  只读数据库的部分差异备份只包含主文件组。
• Subsequent differential backups use the most recent conventional full backup as their base
  差异备份一般会比完整备份占用更少的空间。