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Chapter 5 Backup
◦ 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*2
◦ USB drive connected to the backup source TeraStation*2, 3
◦ Shared folder on another Buffalo NAS device*2, 4
◦ Shared folder on another rsync-compatible device
*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 Btrfs, XFS, or ext3
file systems.
*4 If the "Inherit subfolders' access restrictions" option is selected when creating a backup job, the device should be
a Buffalo NAS device whose subfolders' access restrictions is available.
Overwrite (Differential)
The first backup job runs like a full backup. As each subsequent backup job runs, only files that have been changed
since the last full backup will be backed up, and any files deleted from the backup source folder will also be deleted
from the backup destination folder. The backup destination folder will always remain the same size as the backup
source folder, and the folder structure in the backup destination folder will be the same as the backup source folder.
• Folders available as backup sources:
◦ Shared folder on the backup source TeraStation*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*2
◦ USB drive connected to the backup source TeraStation*2, 3
◦ Shared folder on another Buffalo NAS device*2, 4
◦ Shared folder on another rsync-compatible device
*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 Btrfs, XFS, or ext3
file systems.
*4 If the "Inherit subfolders' access restrictions" option is selected when creating a backup job, the device should be
a Buffalo NAS device whose subfolders' access restrictions is available.
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*1
◦ USB drive connected to the backup source TeraStation*1
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