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Chapter 5 Backup
Failover will activate if any of the following occurs:
• The backup TeraStation cannot detect the main TeraStation within a specified time
If the backup TeraStation has not received a packet from the main TeraStation within a specified time, the backup
TeraStation considers the main TeraStation to have failed. By default, it will try five times and wait 60 seconds. If
this is triggered by accident, reconfigure failover from the main TeraStation.
• Errors
Failover will occur if any of the following errors occur:
E12
(cooling failure),
E30
* (drive failure)
*This triggers when the drive is configured in JBOD.
Before Configuring Failover
If you want to use both failover and Active Directory, configure Active Directory on the main TeraStation before
configuring failover.
Also, use the same LAN ports for transferring data and configure both TeraStations with static IP addresses for the
purposes of failover. It is recommended to use a 10GbE port for failover.
Using the Same LAN Port for Both File Sharing and Failover
Using this setup, if the main TeraStation fails, the backup TeraStation will replace it completely. The backup
TeraStation will be updated over normal network traffic.
Using Different LAN Ports Between File Sharing and Failover
With this setup, the backup TeraStation and main TeraStation are connected by a second Ethernet cable connecting
their LAN port 3. Updating is done over this dedicated network path, so updates are quicker and don't interfere with
normal network traffic.
E14
(cannot mount RAID array),
LAN port 3
Network
LAN port 3
E16
* (drive not found),
(Static IP)
Main
(Static IP)
Backup
137
E22
* (cannot mount drive),
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