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Data Recovery from Solid State Drive (SSD) and Hard Disk Drive (HDD)

Guest post by: Bruce Cullen

Article Overview: Data Recovery for HDD is easier and is less time consuming. Whereas, in SSD, due to the complicated but advanced processes of data storage; data recovery is tough and sometimes impossible. The primary difference is that standard platter based HDD's can be recovered through mechanical means, whereas SSD’s require special technology and algorithm understandings for the individual memory chips and software to try and rebuild the data.

Data Recovery from Solid State Drive (SSD) and Hard Disk Drive (HDD)

Solid State Drive (SSD) are slowly replacing Hard Disk Drives (HDD)and a suitable example can be placed from the wide range of option that we can find when we go for a new laptop computer. This choice will be soon targeted to desktops too.

Although, the choice between SSD and HDD laptops are available but the demand for SSD laptops are slowly overlapping HDD which eventually shows that Solid State Drive (SSD) will successfully lead the market in near future. And with this, even the data recovery for your drive will be little complicated and expensive because data recovery for SSD is a complex process and cost is likely to be higher than HDD.

But, on the other hand, still many users are unknown about the real difference between these two drives and their advantages or disadvantages. Even though, we come across various Storage Drive every day but we hardly wonder whether it is a Solid State Drive (SSD) or a Hard Disk Drive (HDD). I don’t think it is surprising that people are unaware of Data Recovery and its wide possibilities even from wrecked and dead drives. I didn’t know about data recovery until I completely broke my Thumb Drive and blew all my high school pictures last summer.

Well, if you are among those who haven’t faced such tragic story of data loss or don’t know if Data Recovery is possible even from physically or logically dead storage drive then I suggest you to be familiar with your Storage Drive and something about Data Recovery because if you are using Storage Drive then you are always a probable victim of Data Loss.

Ø Hard Disk Drive:

Hard Disk Drive is an enclosed disk drive that contains one or more metallic disks for data storage. These drives are non-volatile in nature and have ability to store digitally encoded data on a rapidly rotating magnetic platter. Even though, these platters are itself a bad conductor of magnet and are made up of glass or aluminum alloy but we can find a thin layer of magnetic material used on the surface of these platters which ultimately helps in data storing process.

Although, Hard Disk Drive (HDD) was introduced in 1956 by IBM as a data storage device with a simple motive to maintain their accounting but later the need of huge and reliable storage device led this simple Hard Disk to a complex and more advanced form like: RAIDs, NASs or SANs etc. The undeniable need of huge storage device among business organizations and individuals not only compel IT industry to produce storage devices with great flexibility and enormous storage capacity but they also had to find a better clarification in case of sudden and unpleasing drive malfunction or data loss. Hence, Data Recovery Companies like: eProvided emerged to be the solution.

Characteristics of Hard Disk Drives:

ü Hard Disk Drives (HDD) contain moveable parts like: rotating magnetic platters and moving head which make HDD weak or sensitive towards any physical hurdles.

ü Platters used in Hard Disk Drives (HDD) are coated with magnetic materials. Hence, they should not be exposed to high magnetic fields.

ü Hard Disk Drives (HDD) need more energy to run as compared to SSD’s.

ü In Hard Disk Drive (HDD) computer searches around the rotating disk for particular data which can be time consuming.

ü Hard Disk Drive (HDD) is cheap and affordable.

ü The mortality rate, speed and reliability is low in Hard Disk Drive (HDD)

ü Data Recovery is simple and easy.

Ø Solid State Drive:

Solid State Drive has been marked as a revolutionizing memory device in the field of IT industry and among data storage lovers. The Drive being non-magnetic and non-optical but a solid state semi-conductor, it promises faster access with better physical flexibility towards extreme temperature, shock and unnecessary physical vibrations.

A Solid State Drive is a high performance plug-and-play storage device that has no moving parts and contains DRAM or Flash Memory Boards which are designed to resist the unnecessary physical vibrations and shock so to provide trouble free performance even in uneven environment.

These SSD are designed with its CPU to manage data and are amazingly faster than other conventional rotating hard disks. Thus, they are highly recommended for server systems where time is crucial.

Characteristics of Solid State Drives:

ü Solid State Drives (SSD) has no moving parts relatively consists of flash memory chips so they have less possibilities of any physical damage.

ü With no moving parts, there is less energy expended which means longer battery life.

ü Solid State Drive (SSD) is not fragile towards magnetic field.

ü In Solid State Drives (SSD) computer can pull up the data immediately instead of looking around on a spinning disk.

ü Solid State Drives (SSD) are more expensive as compared to regular Hard Drives.

ü Compared to Hard Disk Drive (HDD), Solid State Drive (SSD) has less mortality rate and is more reliable.

ü Data Recovery is complicated.

Data Recovery from Hard Disk Drive (HDD) and Solid State Drives (SSD)

Data Recovery for Hard Disk Drive (HDD) and Solid State Drive (SSD) can be categorized under two headings: Tier I (Physical Failure) and Tier II (Logical Failure). No matter if your storage drive is HDD or SSD if they need Data Recovery Solutions then they either need Tier I or Tier II operation.

Data Recovery for HDD is easier and is less time consuming. Whereas, in SSD, due to the complicated but advanced process of data storage; data recovery is tough and sometimes impossible. The primary difference is that standard platter based HDD's can be recovered through mechanical means, whereas SSD require special readers for the individual memory chips and software to try and rebuild the data.

According to eProvided, Hard Disk Drive (HDD) of 500 GB can take hours for recovery whereas a 64GB SSD could take more then 24hours.

Data Recovery for Hard Disk Drive (HDD): eProvided

Ø Data Recovery for Logical Damages (Tier II):

Logical damage is mainly caused by power outages because this prevents your data and file system structure to be completely written in your storage medium. A physically damaged storage medium can also result the same. In both, the file system remains in your storage drive in an inconsistent state and needs proper data recovery support to restore and restructure them.

Some of the major malfunction that can be seen in your storage medium after logical damages are: drives reporting negative amounts of free space, infinitely recurring directories, the clicking behavior of your hard drive’s read/write head etc.

Ø Data Recovery for Physical Damages (Tier I):

Data Recovery for a physically damaged drive has no other solution then Data Recovery Companies. But, still there are many ways to prevent such accidents. A physical stress in a Hard Disk Drive (HDD) can lead to worst case then in a Solid State Drive (SSD) and this simply makes data recovery process more complicated.

Data Recovery for Solid State Drive (SSD): eProvided

Ø Data Recovery for Logical Damages (Tier II):

Data Recovery for Solid State Drive (SSD) has always been a complicated process. A logically wounded Solid State Drive (SSD) has good possibilities from data recovery software but there are some risks too. Many well known data recovery companies have claim that using illegitimate and free data recovery software can harm your storage device and your data severely.

Furthermore, the recent market study has shown that data recovery software which is designed for Solid State Drives (SSD) is usually found ineffective and inadequate. Thus, it’s far better to consult a data recovery company like: eProvided then to risk your data and drive’s life span.

Ø Data Recovery for Physical Damages (Tier I):

Although Solid State Drive (SSD) has been claimed to work even after it has been dropped from two- level building but this doesn’t come true in every step of our life. A physically damaged Solid State Drive (SSD) has only one and the best solution i.e. Data recovery company and experts like eProvided.

A physically damaged drive involves various recovering techniques. These techniques are practiced depending upon the drives physical instability and breaks. Some recoveries are easy and parts replacements can be worthy but in some cases specialized disk imaging procedure is used and every readable bit undergoes a deep scan.

Hence, the data recovery techniques and cost varies. Thus, using software for data recovery on a physically wounded hardware is fallacious and hence always recommended to consult eProvided and SSD/ HDD recovery experts.

Data Recovery Technique from a Logically Wounded Drive:

ü Consistency Checking:

Consistency checking refers to the process where the storage medium undergoes deep software scan. This process is thoroughly performed with the help of advanced software which enables us to know the logical structure of the disk and the accuracy of its directory and their entries. In every file system a directory must have at least two basic entries i.e. a dot entry that point itself and a double dot entry that leads to the parent. The software helps to read and correct them if necessary.

ü Data Carving :

When data recovery from the storage device fails from a normal mode data carving technique is used. This is due to the fact that the desired data no longer has file system allocation information available to identify the sectors or clusters that belong to the file or data.

Data carving usually searches through raw sectors looking for specific desired file signatures this is because the file system has no information on the size of the file being carved, the current methods involve specifying a block size of data to “carve” upon finding the desired signature.

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Article Tags: Data Recovery, memory stick recovery, SD card recovery, SSD recovery



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