Management Backup
Each time a backup is executed, management information is stored, and only files that have changed are backed
up. Data is retrieved from the previous backup file for files that were not changed, which can help reduce the space
used for backup and also for referencing status at a particular point in time (for data snapshot applications). You can
specify how many backup versions to keep from 1–400, or select “Unlimited” to keep all backups until the drive is
full. If using an external USB drive as the backup destination, do not use folders from drives formatted with FAT.
The backup data will be stored in the folder whose name will be the backup date and time, and the destination
folder will be set to read-only.
• Folders available as backup sources:
◦ Shared folder on the backup source TeraStation (excluding the “info” folder)*1
◦ USB drive connected to the backup source TeraStation*1
◦ Shared folder on another Buffalo NAS device*2
◦ Shared folder on another rsync-compatible device
• Folders available as backup destinations:
◦ Shared folder on the backup source TeraStation (excluding the “info” folder)*2
◦ USB drive connected to the backup source TeraStation*2, 3, 4
*1 You can select up to the second level of folders. However, if the folder name of a second level folder contains
symbols, that folder may not appear as the target folder.
*2 The folder should have the “Backup” checkbox selected under “LAN Protocol Support” on the shared folder
settings.
*3 If the “Inherit subfolders' access restrictions” option is selected when creating a backup job, use XFS or ext3 file
systems.
*4 The compatible file systems are ext3, XFS, and NTFS. We recommend using the XFS file system, since the backup
job may take a long time when the number of backup versions exceeds the configured value, especially if the NTFS
file system is selected.
Notes:
• For the destination folder, do not use a folder that has already been used as a target folder for another backup
job. If you wish to use a folder that currently contains backup data as the destination folder for another backup
job, format the folder first, or delete all data in the destination folder and change the folder attribute to read and
write before configuring the folder as the destination folder.
• If a management backup job fails, all the backup data copied to the backup destination so far will be erased from
it.
Preparing a Backup Destination
Configure a shared folder on a Buffalo NAS device or connected USB drive as a backup destination. The following
procedure explains using another shared folder on the TeraStation as a backup destination. The procedure may vary
depending on which Buffalo NAS device is selected as a destination. If using a USB drive as a backup destination,
make sure its attribute is set to read and write. To change a read-only USB drive’s attribute to read and write, refer to
the “Read-Only Shares” section in chapter 3.
If you would like to back up data from multiple backup sources, we recommend not using the same backup
destination, as data in the backup destination may be overwritten by subsequent backup jobs. If you must back up
data from multiple backup sources to the same backup destination, using management backup is recommended
for precise version control.
Note: If you want to set this TeraStation as the backup destination for an rsync-compatible device, refer to the “If
Backing Up from rsync-Compatible Devices to the TeraStation” section instead of following the procedure below.
1 From Settings, click File Sharing.
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