Applicable Products
Hybrid Backup Sync (HBS)
Solution
No, Hybrid Backup Sync (HBS) does not always perform a full backup each time a backup job runs.
- By default, the first backup to a destination is a full backup. This copies all selected data to the target location.
- All following backups are incremental backups. Only new or modified files are transferred after the first run, saving time and bandwidth.
What is QuDedup and how does it optimize HBS backups?
QuDedup is an advanced feature of HBS that performs block-level data deduplication before backup. When QuDedup is enabled:
- The first backup is still a full backup, stored in a
.qdff file on the destination. - Subsequent backups are incremental, transferring and updating only unique data blocks within the
.qdff file. - When files are deleted on the source, HBS simply marks them in the backup rather than transferring all data again. You can choose whether to restore deleted files later.
- We recommend enabling multi-versioning to keep multiple restore points for added data protection.
Performance Example
Example Test (HBS v19.0.0303, 140K files / 1.45TB, backup from TES-1885U to TS-1635AX):
Backup throughput with and without QuDedup| Network Bandwidth | QuDedup disabled | QuDedup enabled |
|---|
| 1GbE | 96.91 MB/s | 96.82 MB/s |
| 10GbE | 183.16 MB/s | 108.77 MB/s |
Note: Enabling QuDedup may reduce backup throughput on high-speed networks, but can reduce storage usage and increase backup efficiency.
Further Reading
适用产品
Hybrid Backup Sync (HBS)
解决方案
不，Hybrid Backup Sync (HBS) 并不总是在每次备份任务运行时执行完整备份。
- 默认情况下，第一次备份到目标位置是完整备份。这会将所有选定的数据复制到目标位置。
- 所有后续备份都是增量备份。只有新的或修改过的文件在第一次运行后被传输，从而节省时间和带宽。
什么是 QuDedup，它如何优化 HBS 备份？
QuDedup是 HBS 的高级功能，在备份前执行块级数据重复数据删除。启用 QuDedup 时：
- 第一次备份仍然是完整备份，存储在
.qdff文件中。 - 后续备份是增量备份，仅传输和更新.qdff 文件中的唯一数据块。
.qdff文件。 - 当源文件被删除时，HBS 只是在备份中标记它们，而不是再次传输所有数据。您可以选择稍后是否恢复已删除的文件。
- 我们建议启用多版本以保持多个恢复点，以增加数据保护。
性能示例
示例测试 (HBS v19.0.0303, 140K 文件 / 1.45TB, 从 TES-1885U 备份到 TS-1635AX)：
启用和禁用 QuDedup 的备份吞吐量| 网络带宽 | QuDedup 禁用 | QuDedup 启用 |
|---|
| 1GbE | 96.91 MB/s | 96.82 MB/s |
| 10GbE | 183.16 MB/s | 108.77 MB/s |
注意：在高速网络上启用 QuDedup 可能会降低备份吞吐量，但可以减少存储使用并提高备份效率。
进一步阅读
