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RAID 1 uses two drives and
makes an exact copy of the data on each drive without writing
any
parity data because none is needed. RAID 1 is
commonly referred to as "mirroring".
The total capacity of the array is
the size of the largest of the two drives. RAID 1 tends to
read to the drives
quickly, but it writes to the drives slowly since it has to make
two copies
of the data to each drive. However, RAID 1
provides 100% redundancy in the event one of
the drives in the
RAID fails. A
RAID 1 can be created
with hardware or software. RAID 1
is frequently used in
many different
types of servers, external hard drives, NAS units, Snap Servers,
and in certain desktop computers.
As the need for fault tolerance increases,
hard drive
manufacturers are using RAID 1 in many of
their devices to offer consumers the
ability to protect their
data with mirroring.
For more
information about the devices using RAID 1 technology,
click here.
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The following diagram illustrates a
RAID level 1: |
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If you experience
problems with your RAID 1 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.
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Turn off your RAID 1 array immediately.
This ensures that no additional data
can be written to the array, which could overwrite the data
you are trying to recover.
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Document the events that occurred causing RAID 1 failure. Try to
make
notes documenting any problems that occurred and efforts
that were made to fix 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. Although not required, this
step will save us time during the RAID recovery process. |
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Contact ReWave immediately. Our data recovery
team is available 24/7 to assist
you with RAID recovery at 866-739-2835. |
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