QNAP has won multiple awards for their network appliances, which showcase fast data transfers
ideal for media stations, corporate data servers, and many other applications. QNAP provides
NAS devices that are highly redundant, and their remote replication utilities allow data to be
quickly copied off of an array. Because of this and other advances (such as RAID 1 and 5
configurations for their home and business servers), NAS devices from QNAP are considered to
be extremely dependable.
Nevertheless, data loss is possible on QNAP devices, just as data loss is possible on every
system regardless of redundancy levels. Natural disasters, user error, and hard drive failure
can cause data to be unresponsive or missing. We provide data recovery services on every QNAP
device, and recovery rates generally tend to be very high.
The Data Recovery Process for QNAP NAS Appliances
Our engineers develop a unique recovery plan for each device. NAS appliances are expedited
in any case; we understand that downtime is often critical when dealing with a server or
storage device failure. 24/7 in-lab work is available for mission critical cases.
The hard drives from your QNAP device are sent to one of our recovery labs, where skilled
engineers get damaged drives to a functional state in a class 100 clean room. Clones are made
of each hard drive; this ensures that every stage of our process is completely nondestructive.
Corruption is usually present on NAS devices after multiple hard drive failures, so we
reconstruct the device using in-lab virtualization technology. This allows us to copy your
requested data onto a return medium. All fully recovered files are completely accessible, and
will function and read normally. Copies of your data are temporarily stored at our laboratory
until the data can be confirmed. This prevents potential issues, and safeguards your data
Once you've confirmed your data, the copies at our laboratory are securely destroyed using
Department of Defense standards. Every case is double-checked by a head engineer before data
is shipped to ensure consistency, to minimize turnaround time, and to get your data back to
you as quickly as possible.
In select cases, remote data recovery may be possible. The possibility of remote recovery is
evaluated on a case-by-case basis, and remote recovery is not possible when hard drive failure
exceeds the protection of a NAS device's redundancy. Contact our engineers at 1.800.237.4200
for more information on remote recovery.
Various error messages can indicate issues on a QNAP NAS appliance, and they're usually
displayed through the GUI software of the device (unless the device is entirely unable to
boot). Some common error messages are:
Moving failed. The destination folder and the source folder are the same.
This is usually a simple fix, as it's an issue with RAID setup related to how the user is
attempting to copy data from one disk to the next. If data is not visible when this error is
present, however, it can potentially indicate data loss. If data is still present, users can
often simply transfer data from their healthy drives using remote replication. This step
should be taken before any attempt to rebuild the system, as it's important to have a backup
whenever errors are present.
Default network shares(Public, Qusb, Qmultimedia) do not exist. It's suggested to reformat
your SATA disk.
This error message displays in the GUI, often after a failed rebuild. It typically means that
an error in the rebuild process caused a loss of some or all of the data through a
configuration issue; blank data was copied to the healthy drives, and data from the RAID was
not copied to the new, replaced hard drive.
In cases with overwritten data, data recovery is still possible, particularly if the file
tables of the device were overwritten but the files themselves remain intact. If you suspect
that data has been overwritten, it's important to shut down your QNAP appliance as soon as
possible and contact customer support, or call a data recovery professional at 1.800.237.4200.
For your convenience, here's a further list of some of the error messages displayed by QNAP
devices. When contacting a recovery engineer, please gather as much information about the
error codes you've been presented with as possible.
Syntax or usage error
Errors selecting input/output files, dirs
Requested action not supported: an attempt was made to manipulate 64-bit files on a platform
that cannot support them; or an option was specified that is supported by the client and not
by the server.
Error starting client-server protocol
Daemon unable to append to log-file
Error in socket I/O
Error in file I/O
Error in rsync protocol data stream
Errors with program diagnostics
Error in IPC code
Received SIGUSR1 or SIGINT
Some error returned by waitpid()
Error allocating core memory buffers
Partial transfer due to error
Partial transfer due to vanished source files
The --max-delete limit stopped deletions
Timeout in data send/receive
Timeout waiting for daemon connection
The LEDs on a QNAP device can also be important, as they can indicate hard drive failure,
overheating, and other issues. Be sure to note the lighting of your QNAP's LEDs before
contacting a data recovery professional.
Supported QNAP Products
Datarecovery.com currently provides data recovery services for every QNAP device. A list of
some of the more popular QNAP devices supported is below.
TS-439 Pro II
TS-239 Pro II
If your device is not listed above, please contact us at 1.800.237.4200.
QNAP Data Recovery Tips
It's possible to accidentally overwrite data on QNAP NAS and SAN devices, so at the first sign
of data loss, shut the device down and don't attempt to replace any drives unless you've
contacted either QNAP's support service or a Datarecovery.com engineer. Collect as much
information as possible about the nature of the failure, including any error messages that
you'd received, any symptoms that your NAS or DAS was displaying, and information about the
device itself (the number of installed drives, operating and file system, etc). As QNAP
devices sometimes allow users to mount hard drives of different sizes, this can be very
Contact a Datarecovery.com engineer as soon as possible. Waiting to pursue data recovery can
limit the potential success of a case, and can extend turnaround time and raise the final cost
of services. Most QNAP cases can be completed in 3-5 days for our standard services and 1-2
days or less for Priority and Emergency services. When you contact an engineer, you'll be
guided through the case setup process, at which point we'll give you shipping instructions for
your hard drives.
We realize that data loss is a serious issue, particularly with storage appliances. Every
step of our data recovery process is designed to be simple, fast, and easy for our clients.
Call us now at
1.800.237.4200 for a free consultation.
*QNAP is a registered trademark of QNAP Systems, Inc. and is not affiliated with Datarecovery.com, Inc. in any way. All product names, registered trademarks, and trademarks are the property of their respective owners.