User manual

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UPS
By enabling UPS (Uninterruptible Power Supply) support, you can protect your NAS from
abnormal system shutdown caused by power disruption. There are two options provided on
the "UPS" page for the NAS during a power failure: 1) turn off the server after the AC power
fails, or 2) enter the auto-protection mode after the AC power fails. For option 1, the NAS will
shut itself down after the specified time. For option 2, the NAS will stop all running services
and unmount all volumes to protect your data after the specified time. For details on NAS
behavior during a power failure, refer to the "Behavior of the UPS Feature of the NAS" section.
Please note that to protect your data, once the power outage starts, the NAS will
automatically turn itself off or enter auto-protection mode (depending on your settings) after
30 seconds regardless of the specified time for either of the above options if the remaining
UPS battery charge is < 15%.
In this chapter, the following topics are covered:
 USB Modes
o Standalone Mode – USB
o Standalone Mode – SNMP
o Network Master Mode
o Network Slave Mode
 Behavior of the UPS Feature of the NAS
USB Modes
Standalone Mode – USB
To operate under USB standalone mode, follow the steps below:
1. Plug in the USB cable on the UPS to the NAS.
2. Select the option "Enable UPS Support".
3. Choose between whether the NAS will shut down or enter auto-protection mode after the
AC power fails. Specify the time in minutes that the NAS should wait before executing the
option you have selected. After the NAS enters auto-protection mode, the NAS resumes
the previous operation status when the power restores.
4. Click "Apply All" to confirm.
Standalone Mode – SNMP
To operate under SNMP standalone mode, follow the steps below:
1. Make sure the NAS is connected to the same physical network as the SNMP-based UPS.
2. Select the option "Enable UPS Support".