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Our Raid Engineers are
highly qualified in the art of extracting data from a failed Raid Array. Emergency
service is available 24/7 by calling 800-432-8291 (Toll Free) or direct for
international callers +1 201-261-2312
Procedures:
(the full service)
- Duplicate
as many hard drives as possible.
- Determine
the Raid failure and formulate a Data Recovery Strategy.
- If
hard drive failures are detected, recover a mirror image of each failed
hard drive.
- Determine
the hard drive order and the stripe size of the Raid Array.
- Attempt
to restore the raid adapter with the recovered hard drives.
- If
the raid adapter cannot be restored, reconstruct the Raid image from
the raw hard drives
- Return
the Repaired Raid to the customer or provide the data on an appropriate
destination media.
Other
Procedures: (the cut rate service...NOT
our method)
- Try
to force the failed elements back online.
- No hard drive duplication.
- Attempt a raid rebuild without backup.
This procedure can create permanent damage to the Raid Array if
the Rebuild fails.
- Rely on luck that might work occasionally, but not
always.
Raid
Data Recovery Services: Raid Failure
Raid Servers can
fail for a number of reasons:
-
On
Raid 5 or Raid 10 server, at least two hard drive elements must fail
to take the Raid Array OFFLINE.
Most
commonly, a first hard drive failure occurs at some point and is unnoticed,
ignored or a replacement hard drive has been ordered but is not yet
installed.
A second hard drive (member Raid Element) develops a problem. Even
a minor problem such as a few bad sectors can cause the Raid Array
to crash
Thus the reliability of a well maintained Raid 5 system is fairly
good.
-
On
a Raid 1 Array, just one hard drive malfunction can cause a crash.
This
is the worst of all Raid configuration. It has 2^N drives probability
of failure, so that a 4 250GB hard drive Raid 0 has a 16X greater
failure rate than a single 1TB hard drive. Most people don't even
know they have a Raid 0 storage because it's in a sealed box, when
they find out, it's too late.
-
Raid
Controllers can fail.
Raid
controllers can also fail or lose their configuration settings. Power
surges or power failures can cause problems especially if you don't
have a UPS (uninterruptible power supply) or even if you have a UPS,
if the battery runs out and you have no automatic shutdown procedure
setup.
-
Many
other electronic parts in a server can fail but usually can be replaced
without affecting the Raid Array. The worst minor defect that I have
seen was a 25 cent molex drive power connector, 2 had failed intermittently
eventually causing the Raid to crash.
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Acknowledgements
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