Failover. Buffalo Tech TeraStation 5000

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Click Yes.

Notes:

• A maximum of 64 shared folders can be configured for replication.

• Shared folders with a backup password set cannot be selected as replication targets.

• Replication can also be used to copy all data from a share to a share on an attached external drive. Format the drive with ext3 or XFS before using for replication. Drives with FAT32 partitions are not supported with replication.

• You can select subfolders as the replication source. Folders whose names contain more than 80 alphanumeric characters cannot be selected.

• Don’t use the same TeraStation for both failover and replication, or replication and Time Machine.

• Don’t configure replication from one source folder to multiple target folders.

• If replication is configured via LAN port 2 and DHCP is used, the TeraStations may not automatically recover from network disconnection. If this happens, restart the TeraStations. For best results, give both replication TeraStations static IP addresses.

Failover

With failover, two TeraStations are connected to the network for redundancy. If a problem occurs in the main TeraStation so that it can no longer be accessed, operation is automatically switched to the backup TeraStation.

Notes:

• Use identical model and capacity TeraStations for the main TeraStation and backup TeraStation. If the capacity of the main TeraStation is larger than that of the backup TeraStation, a “Replication I33 ReplicateFailure” error will occur.

• All drive bays of a TeraStation should be occupied if it will be used for failover. Failover will not work if a drive is missing from any bay.

Ethernet Cable Connection Methods

Two different configurations for failover are available.

Connecting to the network at LAN port 1 and setting failover at LAN port 1

With the first setup, if the main TeraStation fails, the backup TeraStation will replace it completely, using the same name and IP address. The backup TeraStation is updated over normal network traffic.

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Connecting to the network at LAN port 1 and setting failover at LAN port 2

With the second setup, the backup TeraStation and main TeraStation are connected by a second Ethernet cable connecting their LAN 2 ports. Updating is done over this dedicated network path, so updates are quicker and don’t interfere with normal network traffic. With this setup, if the main TeraStation fails, the backup TeraStation will replace it by name, but will keep its original IP address.

Check if the main TeraStation is alive using LAN port 1 and back up data via LAN port 2

• Select LAN port 1 for the backup target and LAN port 2 for the backup LAN port.

• This is more efficient than the setup below and doesn’t interfere with normal network traffic.

Check if the main TeraStation is alive and back up the data via LAN port 2

• Select LAN port 2 for the backup target and for the backup LAN port.

• This is fault-tolerant if network disconnections occur.

The main and backup TeraStations should be the same model and capacity. Use fixed IP addresses for both TeraStations.

Because the IP address of the TeraStation designated as the backup cannot be changed, set its IP address before configuring failover.

Using with UPS

Once failover is configured, you cannot set up a UPS for the backup TeraStation. Configure your UPS before configuring failover. UPS recovery can be configured for both the main TeraStation and the backup TeraStation. However, the UPS settings of the main TeraStation will not be copied to the backup TeraStation.

If the backup TeraStation is configured to sync with the UPS connected to the main TeraStation, then if the main

TeraStation shuts down, the backup TeraStation will no longer be able to detect if there was a power outage. In this case, move the UPS communication cable from the main TeraStation to the backup TeraStation and reconfigure the UPS link settings.

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Configuring Failover

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In Settings, click Backup.

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Open Failover.

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Click Edit Failover Status.

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Select a TeraStation to be the target backup device.

Note: The target TeraStation’s hostname, IP address, and LAN port number will be shown. The LAN port selected here will be used to check the main TeraStation for continued operation.

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Enter the administrator password of the target backup device, then click Continue.

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If the administrator password is correct, the backup TeraStation will beep.

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To accept the settings from the main TeraStation, hold down the function button on the front of the backup

TeraStation until it stops beeping.

Notes:

• If replication is configured for more than one folder, initialize the TeraStation before configuring failover.

• The main TeraStation cannot be used as the backup location for Time Machine.

• If email notification is enabled and failover occurs, navigate to Management - Email Notification - Edit in the main

TeraStation’s settings and click OK.

• Ethernet frame size settings for main and failover TeraStations should be 1518 bytes. To change the Ethernet frame size, navigate to Network - IP Address, click the LAN port and Edit, and change the Ethernet frame size to

“1518” bytes.

• Files whose filenames contain more than 80 alphanumeric characters will not be backed up.

• If a “Replication I33 ReplicateFailure” error appears on the LCD display, navigate to Backup - Replication and click

Sync.

• Don’t use the same TeraStation for both failover and replication, or failover and Time Machine.

• If the “Approve/Deny” window is displayed repeatedly or failover does not start, shut down both the main and backup TeraStations. Turn on the main TeraStation first and let it boot up. Then power up the backup TeraStation.

Reconfigure failover.

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