QNAP Turbo NAS Software User Manual

UPS

UPS

Previous topic Next topic No directory for this topic helpdesk  

UPS

Previous topic Next topic Topic directory requires JavaScript JavaScript is required for the print function helpdesk  

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
oStandalone Mode – USB
oStandalone Mode – SNMP
oNetwork Master Mode
oNetwork 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".
3.Select "APC UPS with SNMP management" from the "Protocol" drop down menu.
4.Enter the IP address of the SNMP-based UPS.
5.Choose between whether the NAS should 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.
6.Click "Apply All" to confirm.

 

Network Master Mode

A network UPS master is responsible for communicating with network UPS slaves on the same physical network regarding critical power status. To set your NAS with UPS as network master mode, plug in the USB cable on the UPS to the NAS and follow these steps:

1.Make sure the NAS (the "UPS master") is connected to the same physical network as the network UPS slaves.
2.Select the option "Enable UPS Support".
3.Click "Enable network UPS Support". This option only appears when your NAS is connected to the UPS by a USB cable.
4.Choose between whether the NAS should 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.
5.Enter the "IP address" of other network UPS slaves to be notified in the event of power failure.
6.Click "Apply All" to confirm and continue the setup for the NAS systems which operate in network slave mode below.

 

Network Slave Mode

A network UPS slave communicates with network UPS master to receive the UPS status. To set up your NAS with UPS as network slave mode, follow these steps:

1.Make sure the NAS is connected to the same physical network as the network UPS master.
2.Select the option "Enable UPS Support".
3.Select "Network UPS slave" from the "Protocol" drop down menu.
4.Enter the IP address of the network UPS server.
5.Choose between whether the NAS should shut down or enter auto-protection mode after 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.
6.Click "Apply All" to confirm.

 

Note: To allow the UPS device to send SNMP alerts to the NAS in the event of power loss, you may have to enter the NAS IP address in the UPS configuration page.

 

Behavior of the UPS Feature of the NAS

 

There are three phases during a power outage:

Phase 1: Power loss starts until the end of the waiting time.
Phase 2: From the end of the waiting time to the point when the UPS device runs out of its battery.
Phase 3: After the UPS device runs out of its battery and until the power restores.

 

Phase 1:

As soon as the power loss starts, the NAS will detect the UPS device’s battery. If the remaining UPS battery charge is < 15%, the system will automatically turn itself off or enter auto-protection mode (depending on your settings) after 30 seconds regardless the time you specified for either of the settings (turn off the NAS or enter auto protection mode.) If the UPS battery charge is > 15%, the NAS will wait for the specified time you entered in the "UPS" page.

 

If the power resumes during this phase, the NAS will remain in operation.

 

Phase 2:

Depending on your setting on the "UPS" page:

If in auto-protection mode, the NAS will stop all running services and unmount all volumes. The NAS at this moment will become inaccessible.
If the NAS is powered off, it will remain off.

 

If the power resumes during this phase:

If in auto-protection mode, the NAS will reboot and resume its previous state.
If the NAS is powered off, it will remain off.

Phase 3:

Depending on your setting on the "UPS" page:

If in auto-protection mode, the NAS will lose its power and shut down.
If the NAS is powered off, it will remain off.

 

After the power resumes during this phase, the NAS will react according to your settings in "System Settings" > "Power Recovery".

 


© 2015 QNAP Systems, Inc. All Rights Reserved.