RAID Data Recovery
Eco Data Recovery provides RAID data recovery and
can restore or recover your RAID, SAN, NAS, Snap Server, and
many others. We run multiple, terabyte capable servers to
tackle the larger RAID'S that arrive here for RAID data recovery.
Utilizing custom software and hardware solutions, Eco
Data Recovery is the ONLY choice for your vital data.
Don't be fooled by companies that offer on-site or sometimes
worse, remote recovery options. Before any utilities are run
against a RAID, all the disks must be cloned sector by sector.
This allows the technician to recover data from a good working
source, rather than a potentially failing or failed hard drive.
Anything short of that is an accident waiting to happen. Just
one foul up and ALL of your data can be lost, and amount to
what is basically "digital confetti". We have successfully
recovered RAID data from servers that have been at many of
our competitors.
DO NOT SEND YOUR ARRAY TO ANY COMPANY WITHOUT VERIFYING THEIR
CAPABILITIES.
In this day and age, there are more and more companies utilizing
large storage units. There is no data recovery company that
has the RAID recovery experience of working with, and recovering
data from RAID devices that our company has. (Dell PowerEdge,
Xserve, LaCie Big Disk, HP ProLiant, Buffalo and more.)
What a RAID (Redundant Array of Independent Disks)
is:
RAID 0:
All the disk devices are organized alternatively so that
blocks are taken equally from all disks alternatively, in
order to reach higher efficiency. Since the probability of
finding a block of a file is identical for all disks, there
are force to work simultaneously thus making the performance
of the Meta disk almost 10 times that of a single disk.
RAID 1:
In this mode, the goal is to reach the highest security
of the data. Blocks of data are duplicated in all physical
disks (each block of the virtual disk has a duplicate in each
of the physical disks). This configuration provides 10 times
the reading performance of a single device, but it degrades
writing operations. Read operations can be organized to read
10 blocks simultaneously, one from each device at a time.
Similarly when writing 1 block it has to be duplicated 10
times, one for each physical device. There is no advantage
in this configuration regarding storage capacity.
RAID 4:
In this mode the ultimate goal is to balance the advantages
of the type RAID0 and RAID1. Data is organized mixing both
methods. The physical 1 to N-1 are organized in striping mode
(RAID0) and the Nth stores the parity of the individual bits
corresponding to blocks 1 to N-1. If any of the disks fails,
it is possible to recover by using the parity information
on the Nth hard disk. Efficiency during read operations is
N-1 and during write operations is 1/2 (because writing a
data block now involves writing also to the parity disk).
In order to restore a broken hard disk, one only has to re-read
the information and re-write it (it reads from the parity
disk but it writes to the newly install hard disk).
RAID 5:
This type is similar to RAID 4, except that now the information
of the parity disk is spread over all the hard disks (no parity
disk exists). It allows reducing the work load of the parity
disk, that in RAID 4 it had to be accessed for every write
operation (now the disk where parity information for a track
is stored differs for every track)
RAID 0+1:
RAID 0+1: striped sets in a mirrored set (minimum four
disks; even number of disks) provides fault tolerance and
improved performance but increases complexity. The key difference
from RAID 1+0 is that RAID 0+1 creates a second striped set
to mirror a primary striped set. The array continues to operate
with one or more drives failed in the same mirror set, but
if drives fail on both sides of the mirror the data on the
RAID system is lost.
RAID is NOT Data Backup!
A RAID system used as a main drive is not a replacement
for backing up data. Data may become damaged or destroyed
without harm to the drive(s) on which they are stored. For
example, some of the data may be overwritten by a system malfunction;
a file may be damaged or deleted by user error or malice and
not noticed for days or weeks. RAID can also be overwhelmed
by catastrophic failure that exceeds its recovery capacity
and, of course, the entire array is at risk of physical damage
by fire, natural disaster, or human forces. RAID is also vulnerable
to controller failure since it is not always possible to migrate
a RAID to a new controller without data loss.
RAID drives can make excellent backup drives, when employed
as backup devices to main storage, and particularly when located
offsite from the main systems. However, the use of RAID as
the main storage solution cannot replace backups.
Call 1-800-339-3412
to speak with a consultant about your RAID array
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