Search
Related Links

 

 

Informative Articles

Easy Guide to RAID Recovery
What is RAID RECOVERY? RAID stands for Redundant Array of Inexpensive Disks. It is a method of combining several hard drives into one unit. This method offers fault tolerance (the ability of a system to continue to perform functions even when...

Getting More Bang for the Storage Buck
In an article titled "No Waiting: Considering the Benefits of Solid State Disks," 1 authors Ramon Sandoval and Maneesha Lee highlighted the growing popularity of solid state disks (SSDs) as accelerators for enterprise databases. The authors cited...

Highlights Of Irs List Of 2005 Tax Scam
Each year, the IRS lists various scams taxpayers get caught up in. The top 2005 scams include several that manipulate laws governing charitable groups, abuse credit counseling services or rely on refuted arguments to claim tax exemptions. The...

IT Department Skills to Support Microsoft Great Plains and Microsoft CRM
Microsoft Great Plains as ERP and Microsoft CRM as Client Relation Management system is very robust combination and could serve midsize to large corporation as Business System. Being VP IT or IT Director you need to foresee the positions to have...

Linux or Windows - Which is it?
Computer users and programmers have become so accustomed to using Windows, even for the changing capabilities and the appearances of the graphical interface of the versions, therefore it has remained Microsoft's product. Although, Lycoris, Red...

 
Before You Take the Plunge: Essential Information on Data Recovery

Know what you're dealing with

The world of data recovery is a big mystery for most consumers and even some IT professionals. This is largely because hard drives themselves are complex devices and their technological specifics are not generally well known. Data recovery companies thrive on their customers' lack of information and often get away with charging obscene rates for any recovery, regardless of complexity. I hope this article will be a helpful resource for consumers and professionals alike. I provide some basic information about data recovery by shedding some light on how hard drives work, how they can fail, what are the chances of successful recovery and how much the user can expect to pay. This information will enable the user to make an informed decision when choosing a data recovery company.



A bit about Hard Drives



A computer hard drive stores data on metal oxide platters which spin up to 10000 revolutions per minute. An actuator arm contains the 'head' which reads and writes the data in the form of magnetic charges one millionth of an inch above the surface. Any given drive can have multiple read and write heads and each head can 'crash' independently. A head crash occurs when the read/write head comes in contact with the platters of the disk (more on head crashes below). As manufacturers strive to cram more space on hard drives without increasing their physical size, the data gets written increasingly closer together, making for very difficult recovery should one or more heads crash. The brain of the hard drive is its controller board and this is unique for each individual hard drive. One other detail worth a mention is the service track of a hard drive. This is an area located on the outer part of the disk platter and it contains the drive's firmware zone. The firmware of a hard drive is the information used by the computer to communicate correctly with the drive. These are the main components that make a hard drive work, now let's talk about what can go wrong.



There are many ways in which a hard disk can fail



Hard drives are extremely fragile and can suffer failures in many different ways, leading to a loss of data. The five most common types of drive failures are: logical errors, mechanical failure, electronic failure, firmware corruption, and bad sectors, or any combination these. Least severe of these is usually data loss due to logical errors.



Logical errors are often the simplest and sometimes the most difficult problems to deal with when recovering data. They can range from an invalid entry in a file allocation table, a simple problem that needs little work; to severe issues such as the corruption or loss of the entire file system. Logical errors can be spotted when files become inaccessible, there is a delay in starting up the computer, and programs do not run properly. Logical errors are often seen as simple because there is nothing wrong with the physical drive leading users to try recovering it themselves by using third party software. This is quite risky, however, as running such software on a damaged drive can result in total loss of data. The most effective way to prevent logical errors on your hard drive is to regularly use the Disk Defragmentation tool in your operating system. For more comprehensive information on preventing data loss, visit the tips section of our website.



Recovering a drive with logical errors can be simple and quick, however if the problem requires manual bit-by-bit reconstruction of the data, it can also be quite complex and time consuming. Normally, logical errors are in the lower end of the price range as they do not require manual disassembly of the drive, however there are cases when logical failures end up in the higher end of the price range. The bottom line with logical errors is the sooner they are caught and the less a user tampers with the drive, the better the chances for a quick and thorough recovery.



Mechanical failures are often much more serious than any other failure and frequently lead to a partial or even total loss of data. The most common type of mechanical failure is a head crash, which is when the read/write head comes in contact with the disk platter. Head crashes can be caused by a variety of reasons, including physical shock, static electricity, power surges, and mechanical read/write


failure. Mechanical failures are detected by a constant clicking or grinding noise coming from the drive. If you suspect mechanical failure, you must immediately shut down your computer and call a data recovery company for advice.



Mechanical failures are usually the most severe and most challenging to recover from. All mechanical failures require physical disassembly of the drive. The replacement of a read/write head is one of the most complex and costly procedures that can be performed by a data recovery engineer, especially with larger capacity drives. The chances of recovery depend entirely on how much damage the drive has sustained, however they can be quite good. A crashed head does not mean that all your data is lost! Once again, the sooner you catch a mechanical problem and turn off your drive, the more of your precious data is likely to be rescued.



Electronic failures are most common after a power surge or due to some other electric problem, and the most common type is control board failure. A power surge can knock out the control board, making the drive undetectable in the BIOS. Because each drive is fitted with a unique control board, recovery of this type is relatively complex. However, the good news is that normally once the control board issue is fixed, the data is usually 100% recoverable.



Recovering a drive that has suffered from an electronic failure can be time consuming, mainly because the specific problem takes some time to diagnose. Once diagnosed, though, the recovery is usually not tremendously complex and would probably land in the mid-range in terms of price. Most of the time, we are able to achieve a 100% recovery from drives that have suffered an electronic failure.



Firmware corruption is caused by logical problems or physical damage to the firmware zone on the disk platter. When the firmware becomes corrupt, the computer is often unable to properly communicate with the hard drive, and drive is not recognized in the BIOS. Fortunately, when the drive fails due to firmware corruption, the data is usually fully recoverable once the drive has been repaired.



Recovering a drive that has suffered from Firmware corruption is possible with the use of our proprietary technology. Because the firmware information is isolated on the outer rim of the disk, most of the data can be recovered successfully. The complexity of recovering a drive that has suffered from firmware corruption depends on the amount of damage suffered by the service track on the disk's platter. Expect the cost of this type of recovery to be in the mid- to high-price range.



Bad sectors are a common fate of all hard drives.



Eventually, all drives develop areas that are no longer functional and when this happens, they are isolated by the operating system. Bad sectors are very much like bumps in the road, areas which are avoided by the read/write head and which are no longer accessible to the user. If mission critical data exists on the drive, we recommend to backup as soon as possible, as the formation of bad sectors often indicates the impending demise of the drive. Finally, and most importantly, do NOT under any circumstances run the ScanDisk or Chckdisk utilities when data becomes inaccessible. These utilities are designed to fix only file system errors and not any other types of errors, so if your hard drive has suffered from bad sectors, these utilities only make things worse.



Bad sectors are accessible



We are able to recover drives with bad sectors using our proprietary mirroring technology. The process often involves manual mirroring bit-by-bit, which can be time consuming. The price of this type of recovery will generally be in the mid-range of the pricing schedule.

I hope the above explanations are of some use to all computer users. The basic fact is that data loss happens to everyone. Every hard drive crashes, and often when you least expect it to. Backup is essential for end-users and business users alike, and there are many excellent ways to back up your data. But if you've lost data, attempt to understand the problem before calling a data recovery company. Be informed, save your money, get your data back.

About the author:

Alex Bezborodov is the technical writer for Accurate Data Recovery. Let ADR bring your data back to life!

 

Data Recovery Software and Undelete from R-TT
Disk management software including utilities for data recovery, drive imaging, disk wiping and access control.
www.r-tt.com
 
Data Recovery | Email Data Recovery by Ontrack
Data recovery services, data recovery software, file repair software, and diagnostic software from Ontrack. Software for email recovery, file recovery and ...
www.ontrack.com
 
Data Recovery by DriveSavers | Hard Drive Data Recovery
Worldwide data recovery service for all operating systems and storage media. Authorized by all drive manufacturers.
www.drivesavers.com
 
Hard Drive Data Recovery Software Tools, Disk Recovery Utilities ...
Offers data recovery software,data recovery services for hard drive recovery and data safety software services for your computer. Buy award winning data ...
www.stellarinfo.com
 
Data Recovery by FADV Hard Drive, RAID, Tape, Database and more ...
Offers data recovery services for all hard drive models. RAID, MS SQL, Exchange, Tapes, Camera and USB media, CD and DVD. Service available 24/7.
www.datarecovery.net
 
Data Recovery Software - File System Utilities
Data recovery software for all Windows file systems. Recover deleted files, corrupted hard drives, and partitions.
www.runtime.org
 
Professional Data Recovery Software from Bitmart. File Recovery ...
Data Recovery Software Restorer2000. Undelete & File Recovery utility for FAT and NTFS file systems. Data Recovery from damaged disks and partitions.
www.bitmart.net
 
Data Recovery Services - ActionFront - Critical Server Data Recovery
ISO certified data recovery services with labs in Atlanta, Santa Clara, Dallas, Chicago, Toronto (also Buffalo and Tokyo Japan)
www.actionfront.com
 
Hard Drive Data Recovery Software: Recover Deleted Files- Recover ...
Data recovery software for recovering files that have been deleted or lost due to the hard drive format, virus infection, unexpected system shutdown or ...
www.recovermyfiles.com
 
Data Recovery Group - Hard Drive Data Recovery Services
Data Recovery is Our Only Business! Data Recovery Group's a complete data recovery service that specializes in recovering data from hard disk drives.
www.datarecoverygroup.com
 
Data Recovery by CBL: Hard Drive Recovery Services
Worldwide Data Recovery Services at CBL. Specializing in data recovery, hard drive recovery, hard disk drive recovery and RAID data recovery.
www.cbltech.com
 
Data Recovery Software, File Repair Utilities, Hard Disk Recovery ...
Hard drive data recovery software to perform data recovery & recover deleted files from Novell, Linux, Unix, Mac, Windows & data recovery services for hard ...
www.nucleustechnologies.com
 
AT&DR: Data Recovery and Liabillity
Associated Technologies offers complete data recovery solutions with services for any type of data storage device, including the following: hard drives, ...
www.datarecovery.com
 
Ontrack UK - Data recovery services & recovery software - hard ...
Ontrack offers data recovery services & software for: hard drive recovery, file recovery, server recovery, email recovery, tape recovery, RAID recovery.
www.ontrack.co.uk
 
Beginners Guides: Hard Drive Data Recovery - PCSTATS.com
Beginners Guides: Hard Drive Data Recovery - PCSTATS.com.
www.pcstats.com
 
File Recovery and Data Recovery Software. Hard Drive recovery utility
Data recovery software for FAT, NTFS, Ext2FS file systems. File recovery after FDISK, MBR destruction, FAT damaged, virus infection. Dynamic disk support.
www.data-recovery-software.net
 
Data recovery - Wikipedia, the free encyclopedia
Data recovery is the process of salvaging data from damaged, failed, ... Although there is some confusion as to the term, data recovery can also be the ...
en.wikipedia.org
 
Active@ UNDELETE Data Recovery. Recover Deleted Files. Windows XP ...
Active@ UNDELETE - Data Recovery Software for all Windows File Systems. Recover deleted files from lost, damaged, formatted or reformatted partitions.
www.active-undelete.com
 
New Zealand Data Recovery & Computer Forensics Experts
New Zealand data recovery specialists & computer forensics investigation experts. Recovering lost data for businesses or legal evidence is all we do.
www.datarecovery.co.nz
 
Canada Data Recovery Services: Hard Disk Drive Recovery, Raid Data ...
Provides data recovery solutions for companies experiencing data loss from failed hard drives, raid arrays, and server systems.
www.datarecovery.ca
 
 

 

Content Menu
  • 10 easy steps to speed up your computer without upgrading

  • 10 proven tips to survive a computer crash

  • 7 critical steps to protect your data

  • add value by documenting your business

  • an introduction to tape backup

  • an outsourcers passage to india how to do it part i

  • are you prepared for a hard drive crash

  • asset searching for recovery actions the decision makers critical tool part 2

  • asset searching for recovery actions the decision makers most critical tool part 1

  • a beginner guide to web hosting

  • a customer complaint management system

  • a fresh start for family finances in 2005

  • background of password cracking

  • backing up your stuff part 2 a solution

  • before you take the plunge essential information on data recovery

  • booting problem in pc

  • business continuity and disaster recovery a business not a technology issue

  • business continuity and disaster recovery business impact analysis

  • business continuity and disaster recovery reducing your risk profile

  • business continuity and disaster recovery risk analysis and control

  • business continuity and disaster recovery selecting a business continuity strategy

  • business continuity and disaster recovery the business continuity and disaster recovery plan

  • business continuity testing starts with the risks

  • business needs vs network performance critical challenges facing network managers

  • can raid systems fail

  • career paths for a comptia a certified technician

  • career paths for comptia a certified technician

  • choosing a data recovery company

  • choosing data recovery company

  • common problems why hard disks crash

  • comparing data recovery software

  • compensating for disruptions in the oil and gas industry

  • computer data recovery options

  • computer disposal throwing away your computer money and idenity

  • computer viruses the basics

  • coping with a serious data loss from your computer hard drive

  • corporate information security is our information more secure since september 11th

  • datarecoverynet com enters medical industry

  • data backups are the biggest security threats

  • data backups are the biggest security threats surprised

  • data backups one key to business survival

  • data recovery

  • data recovery 1 on 1

  • data recovery and data loss a costly proposition

  • data recovery and data safety tips

  • data recovery beginners tips

  • data recovery for less

  • data recovery from laptops

  • data recovery made easy

  • data recovery software at your rescue

  • data recovery software comparison

  • data recovery the best method is prevention

  • data recovery the easy way

  • data recovery what not to do

  • data recovery what you need

  • data recovery you can get it back

  • data security are your assets secure

  • dealing with your pending pc disaster a guide for small business

  • did you ever want to completely erase everything on your computer

  • dirty little computer viruses and how to protect yourself

  • disaster planning v how important is it to you

  • disaster preparedness in a post 9 11 world

  • disaster recovery more than meets the eye

  • disc and data recovery

  • document management features for 2003

  • does it worth to backup emails from clients like outlook express

  • do it yourself data recovery freezer method

  • do i really need to backup

  • drive solutions inc expands data recovery service

  • easy file recovery basic backup guidelines

  • easy guide to raid recovery

  • eliminating the risk of delivering network ready applications

  • email recovery good software can fix your lost mail trouble

  • esecurity

  • exchange disaster recovery with sanrad v switch planning guide

  • e commerce a no nonsense perspective for new business

  • flash usb drive backup easily conveniently and securely

  • focusstor launches a new data backup recovery software

  • getting more bang for the storage buck

  • get down with ocp evaluating dba job applicants in an ocp world

  • got virus

  • got virus your data is not lost forever

  • great plains accounting support overview for it specialist

  • great plains dos support notes for consultant

  • great site ranking in google the secrets out

  • hackers given access to irs computers

  • hard disk data recovery expert choosing yours

  • hard dive failure what is a head crash

  • hard drive crash avoid making a bad situation worse

  • hard drive crash the essential data recovery report

  • health and medical advice on the internet use it wisely to overcome illness and find more happiness in your life

  • highlights of irs list of 2005 tax scam

  • highlights of irs list of 2005 tax scams

  • how multiple server hosting impacts your websites uptime

  • how multiple server hosting impacts your website s uptime

  • how multiple server hosting impacts your web sites uptime

  • how safe is your success part 5 of 8

  • how safe is your success part 6 of 8

  • how secure are online data backups

  • how to avoid everyday sales mistakes

  • how to backup a pc

  • how to backup windows xp home edition

  • how to backup your computer files

  • how to backup your hard drive

  • how to check the status of your tax refund online

  • how to fight cyberterrorism

  • how to prevent computer security risk and how to keep your small business safe

  • how why gps offers affordable fleet tracking

  • how you can avoid my data recovery nightmare

  • hr managers use computer forensics to investigate employee allegations

  • hurricanes wilma katrina and rita force businesses to rethink computer

  • identity theft and credit reports

  • identity theft recovery the road back

  • identity theft safeguarding cant hurt

  • identity theft the road back

  • improving sql performance

  • index

  • information security for smes

  • insure your information backup software

  • internet network security policies need a radical rethink

  • intranet

  • iscsi vs fc for meeting mission critical requirements

  • its all in the planning disaster recovery

  • it department skills to support microsoft great plains and microsoft crm

  • it in house support microsoft great plains and crm

  • keep a diary of your computer

  • learn how to safely backup your hard drive

  • lightning season how to avoid data loss

  • linux or windows which is it

  • loans for bad debtors discarding debt disorganization to recover financial growth

  • local vs remote data backup the pros and cons

  • mcse 70 290 certification primer

  • microsoft great plains customization recovery upgrade for large corporation

  • microsoft great plains customization upgrade recovery visual studio vb 6 0

  • microsoft r exchange server utilities eseutil isinteg

  • microsoft sql 2000 disaster recovery with sanrad v switch planning guide

  • mr

  • need a copy of your tax return information

  • new generation of financial information systems makes crunching numbers faster and easier

  • new iomega tera series desktop hard drive with 1tb capacity

  • nucleus kernel for fat and ntfs

  • nucleus kernel for fat data recovery software

  • nucleus kernel for fat ntfs data recovery software

  • nucleus kernel for ntfs data recovery softwares

  • online investing and trading discussions at www streetplayer com

  • openly sharing your rfp objectives and information with vendors

  • options for computer data recovery

  • outsourcing it asset retirement

  • outsourcing multiplying it services

  • paragon drive copy 8 0

  • planning for 2002 business recovery use public relations firepower

  • protecting your identity on the internet

  • protect yourself before your hard drive crashes

  • quick system restore with asr backups

  • raid disk recovery

  • ready for a business recovery

  • recognizing a pc with malware

  • recover deleted data easily

  • reduce tco the java database way

  • reinstall windows xp on your computer

  • rotator

  • scalability testing 7 steps towards success

  • scalability testing 7 tips for improvement

  • secure offsite backup services and software online file backup and storage remote online backup

  • secure your data windows data backup computer software

  • small business computer security the basics

  • small business network security 101

  • software that takes care of other software

  • sql administrator skills required to support microsoft great plains

  • syi save your identity

  • teosoft cleanspace 9 software

  • the best data recovery choice for you

  • the day my laptop was stolen almost killed my business

  • the devastation of data loss and what you can do about it

  • the essential data recovery report

  • the google patent reveals the secret to great site ranking

  • the importance of engaging a qualified data recovery expert

  • the importance of proper security for your pc

  • the mystery of the unknown

  • the seven deadly habits of a dba and how to cure them

  • the seven golden rules of data backups

  • the worst case scenario how to protect your data

  • think you have a dead hard drive

  • top 10 ways to protect yourself from computer viruses

  • top 10 ways to protect yourself from online identity theft

  • top 5 backup tools you can pick up for pennies

  • top 7 reasons you should back up your data online

  • top computer problems leading to data recovery

  • trouble shooting hard drive problems part 2

  • using sanrad v switch as the vss hardware provider for windows backups

  • using system restore to save yourself from formatting your hard drive

  • webfarms ii balancing the load

  • welcome to the world of knoppix

  • what could macedonia learn from a tiger the asian tigers and the phenomenon of uninterrupted economic growth

  • what is data recovery

  • what is data recovery a brief introduction

  • why usability is important to you

  • will you recover

  • working from home for yourself or someone else

  • your hard disk failed dont panic

  • your hard disk failed don t panic

  • your hard drive is going to explode why a ups is essential

  • your privacy exposed computer forensics international uncovers secrets about recycled hard drives

  • you can recover deleted data

  • you lost your data dont panic

  • you need to backup