Overwrite Backups (Incremental and Differential)
Files and folders have already been stored on the desired destination. You can access them by switching the
operation to the backup destination LinkStation. Alternatively, you can restore any files or folders by creating a
backup job and configuring the backup destination as a backup source and selecting the same backup mode for the
“Operation Mode” drop-down list. Do not use the same folder as the backup destination to restore backup data from
multiple backup sources, as this may cause the restored data to get overwritten.
Backup Logs for If Backup Fails
If backup fails, the I54 message appears on the Dashboard in Settings and NAS Navigator2 and the following
backup error codes may be displayed in the “Status” field. Read the description and try the respective corrective
actions for each error to resolve it.
Code Description Corrective Action Log Example
Code 3
The backup destination USB
drive could not be found.
Check that the backup destination
USB drive is connected to the
LinkStation properly.
rsync error: errors
selecting input/
output files, dirs (code
3) at main.c(634)
[Receiver=3.1.0]
Can't write to backup
destination(target disk
is broken?).
Code 5
The backup destination shared
folder could not be found.
Check that the Ethernet cable is
securely connected and that the hub
or other devices on the network are
turned on.
rsync error: error
starting client-server
protocol (code 5) at
main.c(1504)
Code 10
The Ethernet cable was
disconnected from the backup
source LinkStation when the
backup job started.
Reconnect the Ethernet cable.
rsync error: error in
socket IO (code 10)
at clientserver.c(128)
[sender=3.1.0pre1]
Code 11
The drive capacity of
the backup destination
LinkStation became full.
Delete unnecessary files and folders.
rsync error: error
in file IO (code 11)
at receiver.c(389)
[receiver=3.1.0]
Files larger than 4 GB were
backed up to the FAT32-
formatted USB drive.
Reduce the file size to 4 GB or less, or
change the file system to one other
than FAT32. Refer to the “Adding an
External Drive” section in chapter 3 for
compatible file systems.
rsync: write failed on
“filename”: File too
large (27)
Code 12
Could not communicate
between backup source and
destination LinkStations.
Check that the Ethernet cable is
securely connected and that the hub
or other devices on the network are
turned on.
rsync error: error in
rsync protocol data
stream (code 12) at
io.c(515)
The settings of the LinkStation
were changed while the
backup job was running.
Do not change the settings while the
backup job is running. If changed, the
connection will temporarily terminate
and the backup job will fail.
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