ZyXEL Communications NAS540, User Manual

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Chapter 17 Applications
Cloud Storage User’s Guide
242
• A copy of files A and B from the USB device is transferred to the NAS.
• File A from the USB device replaces file A on the NAS.
17.11.9 Synchronizing Files
Synchronization makes the contents on the target device identical to the ones on the source device.
You can synchronize files from a USB device to the NAS or from the NAS to a USB device. In
addition, you may also synchronize files in both directions simultaneously.
Press and hold the COPY/SYNC button until you hear a beep to synchronize files. See Section
17.10 on page 232 for details about configuring the synchronization settings.
USB -> NAS or USB <- NAS
When you synchronize files in one direction, contents on the source device replace the files on the
target device.
The following figure illustrates how synchronization works when you synchronize files from a USB
device to the NAS. The same concept applies when you synchronize files from the NAS to a USB
device.
Figure 143
Synchronizing Files Example 1
Both storage devices contain A.
• A copy of files A and B from the USB device is transferred to the NAS.
• File A from the USB device replaces file A on the NAS.
• File C on the NAS is deleted.
A C
Before Sync
After Sync
USB
NAS
A B
USB
NAS
A B
A B