A RAID 5 array uses a
minimum of three disk drives and stripes both data and
parity information
across all of the drives. A RAID 5 array has the ability
to withstand the loss of one drive as the
parity information can help reconstruct the data from the failed
drive. The total size of the array is calculated by
multiplying the capacity of the smallest drive
times the number of
drives, and then
subtract the capacity of the smallest drive. A RAID 5
has a fast read rate, but it tends to
write to
the
drives slowly
since it must write one stripe of both data and parity to each
drive. A
RAID 5
can
be created
with hardware or software.
RAID 5 is frequently used in
many different types of
servers such as file
and application servers,
intranet servers, email servers and for
database applications.
As it is
generally fault tolerance
and cost efficient, companies are
using RAID 5
as their preferred choice.
For more
information
about the devices using RAID 5 technology,
click here.
The following diagram
illustrates a RAID level 5 (striping with parity).
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THE
RAID 5 RECOVERY PROCESS: |
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1)
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Contact ReWave toll-free at 866-739-2835, via
email, or
submit a free quote form
for
RAID 5 data recovery.
We
are
available 24/7 to
assist you with your RAID 5 recovery. |
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2)
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A
data recovery technician will immediately assist you
with a free price quote for RAID
recovery and instructions on
how to receive a free evaluation to determine the
cause of
your RAID 5 failure. You can bring your RAID
to one of our data recovery labs or
ship
your RAID to
us using our shipping instructions. |
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3)
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Upon receipt of your array, a data recovery technician
will perform the free evaluation.
You will be contacted
with the results and given the choice to move forward
with the
recovery. The actual recovery process will then
begin and
could take as little as
24 hours. |
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SPECIFIC CAUSES OF RAID 5 FAILURE: |
There can be many reasons for RAID 5 failure.
Listed below are some of the most common:
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Bad Sectors in the RAID 5 |
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RAID 5 Backup Unsuccessful |
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RAID 5 Power
Failure |
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Corrupt Data in the RAID 5 |
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RAID 5 Broken |
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RAID 5 Power Surge |
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Corrupt Files in the RAID 5 |
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RAID 5 Controller Failure |
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RAID 5 Rebuild
Failure |
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Corrupt RAID 5 Controller |
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RAID 5 Crash |
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RAID 5 Won't
Boot |
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Damaged Files in the RAID 5 |
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RAID 5 Crashed |
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Reformatted
Drives in the Array |
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Degraded RAID 5 |
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RAID 5 Disk
Failure |
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Repartitioned
Drive in the Array |
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Deleted Files in a RAID 5 |
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RAID 5 Drive
Failure |
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Server Crash |
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Failed RAID 5 |
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RAID 5 Failure |
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Virus Attack
on the Array |
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Missing
Partitions |
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RAID 5
Firmware Failure |
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Virus
Corrupted the Array |
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Overwritten
Files |
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RAID 5 Partition
Table Corrupt |
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Virus Caused
RAID Failure |
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WHAT TO DO IF YOU EXPERIENCE RAID 5 FAILURE: |
If you
experience problems with your RAID 5 array, please do not attempt
to correct the problem
yourself. By taking matters into your own hands, you
could overwrite parity data making RAID
recovery more difficult. Please follow
the steps below and contact ReWave for assistance at
866-739-2835.
STEP 1
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Turn off your RAID array server immediately
to ensure that no additional data
can be written to the array, which can overwrite the data
you are trying to recover.
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STEP 2
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Document the series of events that occurred causing RAID
failure. Make a
note
of any problems that occurred and the
efforts made to solve the problems.
If you remove the drives from the array, it is important to label the drives with the
same order in which
they existed in the array.
This will save our data recovery team time when piecing the
array back together to recover the data. |
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STEP 3
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Contact ReWave immediately toll-free at 866-739-2835. Our data recovery
team is available 24/7
to assist
you with RAID recovery. |
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