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Free Diagnosis

Two Reasons
 To Use MjM: 

 
1. FREE Diagnosis

2. No Data Recovery, No Fee.

All data recovery work undertaken by MjM is under a free diagnosis and a no recovery no-fee policy. If it is not possible to recover your data, then there is no fee for you to pay. If you need market leading data recovery services please telephone us now on

0800 072 3282
 
OR
 

 

Serviced UK Areas

We have recovered data for
customers from all over the UK,
including the towns and cities
below, but please note that our
Data Recovery Labs are
based in Letchworth, Herts
and all media will need to
be delivered there.

Ashford Leicestershire
Basildon Lincoln
Bath Lincolnshire
Bedford Liverpool
Bedfordshire London
Belfast Luton
Berkshire Maidstone
Birmingham Manchester
Blackburn Merseyside
Blackpool Middlesbrough
Bolton Milton Keynes
Bournemouth Newcastle-upon-
Tyne
Bradford Norfolk
Brighton Northampton
Bristol Northamptonshire
Buckingham Northumberland
Buckinghamshire Norwich
Cambridge Nottingham
Cambridgeshire Nottinghamshire
Cardiff Oldham
Chelmsford Oxbridge
Cheshire Oxford
Chester Oxfordshire
Colchester Peterborough
Cornwall Plymouth
Coventry Poole
Cumbria Portsmouth
Derby Preston
Derbyshire Reading
Devon Rotherham
Doncaster Rutland
Dover Scarborough
Dudley Sheffield
Durham Shropshire
East Sussex Somerset
Edinburgh Southampton
Essex Stafford
Glasgow Staffordshire
Gloucester Stoke
Gloucestershire Stoke-on-Trent
Greater Manchester Stratford-upon
-Avon
Guildford Suffolk
Hampshire Sunderland
Harrogate Surrey
Herefordshire Sussex
Hertford Tyne-and-Wear
Hertfordshire Warwickshire
Huddersfield West Midlands
Hull Wiltshire
Ipswich Winchester
Isle-of-Wight Windsor
Kingston upon Hull Wolverhampton
Lancashire Worcestershire
Leeds York
Leicester Yorkshire

RAID Data Recovery Specialists - Tel: 0800 072 3282

Data recovery from RAID arrays including RAID 0, RAID 1, RAID 3, RAID 4, RAID 5, RAID 6, RAID 10, RAID 51 and any other RAID level or hybrid. Raid Data recovery services from all manufacturers of servers including Compaq, HP, Dell, IBM, Fujitsu. Data recovery from NAS and SAN Raid systems andfrom all RAID card manufacturers including Adaptec, Compaq/HP, Promise, AMCC/3Ware, Areca, LSI Logic, Intel and dozens of others.

 

Because of multi-drive configurations, data recovery from RAID arrays is a complex process requiring skilled engineers and the mos advanced software. We are able to work out stripe rotation, block sizes and parity without needing the RAID controller card. This helps speed up the data recovery process as you can prepare a new RAID system and copy the recovered data to that.

 

Because of our in-depth knowledge of how RAID systems and Volume Sets work we often recover data where many others have failed, particularly with Compaq and HP RAID arrays. We always offer free diagnosis, realistic prices and will not charge you if your data is not recoverable.

Usually, we can provide a same or next day data recovery service to get you back in business as quickly as possible.

What is RAID?

Redundant Array of Inexpensive Drives (RAID) is a method of increasing data storage by means of using groups or an 'array' of small (inexpensive) hard drives creating a single large volume. There are several RAID array configurations and each has its advantages and disadvantages.

  • RAID 0 (Striping Without Parity) consists of two or more disk drives with the data striped across the entire array. There is no fault tolerance, so a failure within a RAID 0 array will result in inaccessible data.
  • RAID 1 (Mirroring and Duplexing) - Consists of at least two disk drives. The data on the second drive is identical to the data on the first drive. If one disk drive fails, then there is a complete copy on the other drive.
  • RAID 2 (Hamming). Rarely used these days but was fairly common before ECC (error correction codes) became built in on IDE hard disks.
  • RAID 3 (Striping with Parity). Needs at least three disk drives. Data is striped across two drives with the third drive holding parity information. If any one disk drive fails, then the data can be rebuilt using the other two. Data is striped at byte levels usually under 1024 bytes per stripe. Arrays with dedicated parity drives found in RAID 3 and 4 can be sluggish when writing as there is a bottleneck on writes to the parity drive.
  • RAID 4 (Striping With Parity) Similar to RAID 3 but data is striped in blocks, typically 64k but can be other sizes.
  • RAID 5 is the most common RAID level and requires at least three disk drives. Data is stored in stripes with a distributed parity stripe across the drives. This removes the bottleneck found in RAID 3 and 4 and is the best option when considering RAID arrays with parity.
  • RAID 6 (Block-level striping with dual distributed parity). Similar to RAID 5 but there are two distributed parity stripes, this configuration has lower performance than RAID 5 but offers greater fault tolerance as two drives in the array can fail without loss of data.

There are also several 'hybrid' RAID levels, such as RAID 10 (OR RAID 1+0) this is where two separate arrays are combined into a single volume. For example ...

  • RAID 10 There may be 4 disk drives in the array, two are RAID 0, and the other two are also RAID 0 but mirror the first pair.
  • RAID 51 you may have 6 disk drives in the array, configured as two x 3-drive RAID5 volumes. The second set mirroring the first set. In theory this gives better redundancy than standard RAID5 as up to 3 drives can fail before data is lost.

When using any type of RAID array based storage system, all drives in the array are presented to the operating system as a single volume.

 

 

Testimonials

 

We have used MJM Data Recovery for several years, they have always provided a quick and efficient service, with great customer support. Highly Recommended.

G Edwards - Symantec

 

 
Further testimonials and ratings can be viewed at ITProfessionals.