这是日志文件：
[2020/04/24 18:58:07] Job [002.图片-->nas] started.
[2020/04/24 18:58:07] Synchronize files between a local folder and an external drive with volume ID: 0C3E21703E21544C.
[2020/04/24 18:58:07] The number of folder pairs = 1.
[2020/04/24 18:58:07] Pair1 = [H/002.图片, USBDisk1/nas].
[2020/04/24 18:58:07] Schedule type: Manually.
[2020/04/24 18:58:07] The deleting extra files option is disabled.
[2020/04/24 18:58:07] The checking data content option is disabled.
[2020/04/24 18:58:07] The detecting sparse files option is disabled.
[2020/04/24 18:58:07] The extended attributes option is disabled.
[2020/04/24 18:58:07] Symbolic link files are included.
[2020/04/24 18:58:07] The detail log is enabled with the maximum size 10 MB.
[2020/04/24 18:58:07] Maximum retry times: 3; Retry interval in seconds: 60; Connection timeout in seconds: 120; Current retry number: 0.
[2020/04/24 19:00:19] # ERROR: Job is aborted because the external storage device is not available!
[2020/04/24 19:00:19] Job is aborted because the external storage device is not available!

明明硬盘没有设密码，通过威联通访问硬盘就要密码

是移动硬盘到nas么

是移动硬盘到nas还是nas到移动硬盘

nas到移动硬盘

错误原因是移动硬盘无法使用，下这个软件备份，使用单向同步备份。如果你硬盘只是用来备份的，就用储存与快照总管将硬盘格式化成EXT4格式使用,不要用电脑格式化，用储存快找总管格式化

格式化成EXT4格式，那还能在电脑上打开吗

谢谢！我暂时不用管格式的问题了，刚刚检查发现硬盘SMART - 检测失败。已经申请售后退回了。

通过储存与快照总管格式化成EXT4格式，还是同步失败

首先你要确定你手动将nas的文件复制粘贴到移动硬盘是可以的，然后把像下图的文件选择和策略发一下图