We
successfully recover data from failed / damaged / impacted RAID 5, 0,
1, 10 servers
Data Clinic offer a prompt and professional
service for the successful recovery of your valuable data from any
type of failed RAID system including Dell PowerEdge / PowerVault,
XServe and SuperMicro systems. In addition to a free collection service
that ships your damaged RAID to us, we offer a UK call out service where
we recover your critical data onsite.
Specific failures on RAID systems that we can recover
data from include:
- RAID array / Controller Card Failure
- Controller Card Set-up Corruption
- RAID Container Crash
- Server won't boot
- Server registry configuration lost
- Rebuild failure
- Damaged striping
- Multiple hard disk drive failure (or multiple drives go offline)
- Intermittent drive failure resulting in configuration corruption
- RAID array or volumes that won't mount after a server crash
- Configuration damage or corruption
- Addition of incompatible drives
- Hardware conflicts
- Software corruption
- Software or operating system upgrades
Data
Clinic's Recovery Process for Servers, NAS, or RAID Arrays
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Our technicians treat Server and RAID data loss situations as
high priority cases. An initial diagnosis determines whether each
media device is accessible to our lab equipment. If so, the first
priority is to create a raw image of all data from accessible
media onto new media so that logical analysis can determine the
nature of the information loss situation
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Recovery
of crashed RAID and other hard disks often involves replacing failed
or damaged components in a clean environment and using specialized
hardware and software tools to create the raw image. Failed components
typically include electronics, read/write heads, head assemblies,
magnets & drive motors.
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Multiple-drive
servers are typically 'destriped' onto our media so that filesystem
repairs can be performed and the data files extracted. Sometimes
the existing filesystem structures are missing or damaged so much
that data has to be extracted directly from one or more fragments
of the destriped image.
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Our
programmers have created a full set of software tools used by our
technicians to analyze, destripe, fix & recover data from raw
images drives to virtually all operating systems. Once a recovery
has been successfully performed, file lists are created and information
validity is checked.
> Data Clinic
recover data for some of the UK's best known companies - click to see
our client list
Call
the Data Clinic and talk your problem through with us on
0870 140 2525
or
Fill
out our Auto-Form
and we'll call you back
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Links:
>
8
Golden rules to follow to minimize data loss
> Minimizing
data loss on RAID arrays and servers
> Recovery
of lost / damged / deleted Exchange server (EDB) files & SQL databases
> Information
on RAID parity calculations (technical)
>
Case Study: Advanced
Data Recovery on a flood water damaged RAID 5
> Case Studies: RAID
data recovery (Windows)
> Case Studies: RAID
data recovery (Mac)
> Apple
X-Serve RAID recovery
> Back to the main
data recovery page
> General
data recovery section
> Advanced
data recovery section
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"Data
Clinic's achievements in the field of data recovery consistently
break new ground and move the industry forward"
Dr P Nutter
Lecturer in Computer Science and Data Storage
Technologies
The University of Manchester |
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RAID
5, 0, 1, 10, 50 Fault? - Call Us
0870 140 2525
Onsite / In-Lab data recovery services
UK Wide Collection
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RAID-0
Level 0 is not redundant, hence does not truly fit the "R.A.I.D."
acronym. In level 0, information is split across drives, resulting
in higher data throughput. Since no redundant information
is stored, performance is very good, but the failure of any
disk in the array results in information loss. This level
is commonly referred to as striping.
RAID-1
Level 1 provides redundancy by writing all information to
two or more drives. The performance of a level 1 array tends
to be faster on reads and slower on writes compared to a single
drive, but if either drive fails, no information is lost.
This is a good entry-level redundant system, since only two
drives are required; however, since one drive is used to store
a duplicate of the other, the cost per megabyte is high. This
level is commonly referred to as mirroring.
RAID-5
Level 5 employs a combination of striping and parity checking.
The use of parity checking provides redundancy without the
overhead of having to double disk capacity. Simply put, parity
checking involves determining whether each given block has
an odd or even value. These values are summed across the stripe
sets to obtain a parity value. With this parity value, the
contents of a failed drive can easily be determined and rebuilt
on a spare drive.
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