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TeraStation User Manual 37
Replication will mirror data on your TeraStation to a second TeraStation. An exact duplicate of a data share on the rst
TeraStation is copied to the second TeraStation virtually simultaneously. To congure Replication, use an Ethernet cable
to connect LAN Port 2 on the rst TeraStation to LAN Port 2 on the second TeraStation. The rst TeraStation should be
connected to the local Network by LAN Port 1.
Notes:
• If the rst TeraStation goes down, you can switch to the second TeraStation by moving the main Ethernet cable from
the rst TeraStation to the second TeraStation’s LAN Port 1.
• Replication copies data only, not users or settings. To back up users, groups, and passwords from a TeraStation, use the
NS-SHFT utility.
• If a backup password is set for a share, then that share cannot be selected as a backup target for replication.
• Replication copies data from the source folder to a target folder. Please note that any data in the target folder that is
not in the backup source folder will be deleted.
Only folders on TeraStations which support Replication (TS-XL, TS-XEL, TS-WXL, TS-RXL, TS-HTGL, TS-RHTGL. etc.) can
be selected as replication source folders or target folders.
Up to 64 shares can be selected for replication.
• Only data written by SMB and CIFS (Windows) and AFP, NFS, SFTP, FTP, and FTPS (Apple) can be mirrored by
replication.
• Replication transfers les asynchronously. It may take time to transfer les depending on the network environment or
status of the TeraStation.
• Replication will retry le transfers if they fail because of a network problem. If the retry fails, the TeraStation’s Error LED
will light and an alarm will sound. To repair, x the network problem, then, in the Web Admin interface, navigate to
[System] - [Backup] - [Replication] and click [Resynchronize].
• Do not set multiple Backup Targets for one Backup Source. Multiple transfer processes for Replications will run, and
system performance will be adversely aected.
• Do not replicate a share that is the target of Time Machine backups by Mac OS X.
• System performance may be degraded if Mac OS X writes to the replication source folder with an AFP connection. If
this occurs, connect via SMB for better performance.
• When replicating to a USB drive, a folder which has the same name as the backup source will be created on the USB
drive. If the same folder name already exists on the USB drive, any les in that folder will be deleted.
• External hard drives formatted with FAT 16 or FAT 32 should not be used with replication. For best results with the
TeraStation, format your external USB hard drives with XFS or EXT3.
• NFS is set to the [Kernel mode], les or folders written by NFS protocol are not transmitted to the replication
destination. To change NFS settings from the [Kernel mode] to the [User mode], select [Network] - [NFS] - [NFS Service]
on the Web Admin interface.
Replication