10% of Drives Sent for Data Recovery Previously Opened
Diminishing chance of recovery by 45%
Kroll Ontrack announced that for the third year running, more than 10% of the
media sent to the company has been previously opened, diminishing the chances of
a successful recovery by more than 45%.
This represents a large volume of unnecessary data loss when
you consider that Kroll Ontrack processes more than 50,000 recoveries a year.
When a drive is opened, the ability to recover data from the
media can be diminished, recovering data from a physically damaged hard drive is
considerably more difficult than a logical failure, so opening a failed drive
should only happen in a professional and certified clean room environment with a
laminar air flow system.
A hard drive is a sealed unit, designed to keep any debris
from entering while it is in use. The read-write heads inside that drive are
designed to float over the platter surface while it is spinning, usually at
speeds anywhere between 5,400 and 15,000rpm. When dust particles enter the unit
while it is spinning at full speed, the smallest of particles can make their way
between the heads and the platter surface, causing the heads to crash.
Ontrack Data Recovery engineers diagnose all received drives
to determine the condition of the media and data in a data recovery lab. Common
discovered issues include: multiple bad sectors, damaged surfaces and
malfunctioning head assembly due to instability or severe head crashes. If the
media is diagnosed with a logical failure (non-physical), engineers use
specialized tools to rebuild and repair damaged data structures, and then access
and extract the data. In instances of physical damage, Engineers open the device
within a clean room environment and assess the physical condition of the circuit
boards and moving parts through a rigorous diagnostic process.
A clean data recovery environment is a devised system for
routing the air flow on rows of workbenches in an arrangement based on quality
submicron particulate air filters that trap the smallest particles. These
systems use special HEPA filters (high efficiency particulate air filters) that
filter out suspended particles only 0.5 micrometers in diameter. Workbenches and
data recovery work stations are arranged in specialized areas based on the type
of media: 2.5 , 3.5" IDE, SATA drives, USB drives, SAS, SCSI, SSD, flash,
phones, tablets and server media. All Kroll Ontrack workbenches follow ISO
14644-1 class 5 standards.
75% of drives sent to Kroll Ontrack have physical failures
versus logical damage. As a result, a large inventory of spare parts to address
the wide inventory of drive capacities and components is also critical to any
Working on an Image
Getting a physically damaged drive to work is key to the
recovery, but so is working from an image of the data. This best practice
ensures the data is not further damaged in the process.
Clean room engineers create a disk image when working on a
malfunctioning drive by connecting the drive to a sophisticated system made up
of proprietary tools. All recovery work is performed on this image, safeguarding
the customer's data in a highly secured in-house data center. Recovery results
are then displayed in a Verifile report, a web-based application used to inform
customers of what files can be recovered before they commit to a recovery