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Dell PowerEdge
Data Recovery
Dell's robust
PowerEdge series
servers are typically
configured in
a RAID 5 configuration
hosted on PERC
RAID controllers.
The most common
issues we see
with these servers
are controller
failures, with
a common result
being at least
1 and possibly
2 or more drives
dropping out of
the array.
It's not uncommon
for a RAID 5 to
continue operating
in a somewhat
degraded state
with a single
drive out of the
array. Since there
is parity, there
is enough of the
array intact in
order for the
server to remain
running. However,
the problem comes
when there is
any type of hiccup
or problem with
another drive.
Once an additional
drive has any
type of problem
at all, and one
drive in the array
is already down,
it will bring
the entire array
down with it.
A common problem
that results in
the data being
unrecoverable
in these situations
is the fact that
many times support
personnel will
actually start
doing hot swaps
and rebuilds on
the array. That
is absolutely
the worst thing
to do at this
point. It's one
thing to hot swap
and rebuild when
a single drive
is down and you
need to do a quick
replacement. It's
totally different
when 2 drives
are gone. In most
cases the stripe
is skewed, and
the rebuild will
try to do just
that.....rebuild
the damaged array.
This process moves
blocks of data
around, and many
times will overwrite
vital elements
of the original
stripe which can
result in the
data being completely
unrecoverable.
If you have a
RAID failure,
it's best to leave
the server alone.
Contact a data
recovery professional
immediately. We
have the experience
and equipment
needed to emmulate
PERC controllers
and recover the
data from your
failed PowerEdge
server. All of
our recovery work
is backed by a
100% customer
satisfaction guarantee.
We do not charge
if your data is
unrecoverable
and we never charge
an evaluation
fee. If you have
any questions,
please call 1-800-868-6940.
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