 
Background
In a data loss situation the problem can be categorized into two classes: Logical or Physical Causes. Given these
categories, we have organized our data recovery into the two corresponding categories,
Logical Data Recovery and Physical Data Recovery.
Logical Data Recovery is known
as Software-level File System Restoration. Logical Data Recovery does not involve
mechanical or physical repairs. Problems like deletion, partition loss, operating
system corruption, firmware corruption, virus infections, formatting, database indexing
corruption, file structure damage and clone-by-mistake are just some of the examples
of Logical Causes. The most challenging problems in the Logical Data Recovery service
are database indexing issues and clone-by-mistake issues.
Symptoms include but are not limited to the following:
- Specific documents cannot be found or read as usual;
- The disk cannot be read via the operating system;
- Lost partitions;
- "Cannot recognize device" messages pop up, etc.
In the same way, Physical Data Recovery
requires mechanical or physical repairs in order to retrieve data. Hard drive or
device physical damage can be caused by a manufacturer's defect, a physical impact
such as a device being dropped or bumped while it is running, or fire and water
damage. The damaged chips or components manifest problems such as bad track, burnt
PCBA, motor seizure, head crash, scratches on platters, and other malfunctioning
components.
Symptoms may include but are not limited to the following:
- Hard drive makes a "clicking" sound like "tick tack".
- Disk is recognized by system but cannot be read normally;
- Disk cannot respond to system commands;
- Disk cannot be detected via operating system;
- Disk freeze due to bad sectors;
Solutions
 Data
recovery service is sorted into three categories; Tier 1, Tier 2, Tier 3 recovery
and so on. Click here for pricing and details of our data recovery services.
Logical Data Recovery is considered
between Tier 1 and Tier 2 data recovery. This is depending on the severity of the
damage to the drive. In most cases repairs can be handled using our professional
logical data recovery software.
Physical damage on the surface of a disk, like bad sectors, are usually product
defects and can be resolved by reallocating bad sectors or partitions. This is considered
Tier 2 recovery.
Physical Data Recovery refers
to data rescue from hard drives with internal damage, motor or damage to the chips
on the PCBA. Data recovery procedures need to be done in a "clean room" (a dust
free environment). Here our technicians can manually replace damaged components
with the assistance of industrially designed tools. This data recovery clean room
procedure is critical to the success of Physical Data Recovery, if any particles
disturb the hard drive they may interfere with the recovery. Also, incorrect operations
on parts replacement can cause disk misalignment and destroy the data. Because of
the difficulty and the extensive involvement of unique industry tools and the clean
environment, Physical Data Recovery is in the Tier3 and beyond territory and is
the most expensive data recovery service. Our data recovery service offers free
part donors for the replacement of damaged components.
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Data Recovery Questions and Inquiries
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