Data Recovery Services
On-Site Computer Laptop Service and Repair
Are you fed up with the hassle of disassembling your PC and hauling it to a repair shop every time it needs service-only to wait a week or more to get it back? Our trusted technicians will come directly to your home to solve your computer troubles right on-the-spot. Simply call us to select an appointment time to fit your schedule.
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When it comes to protecting valuable computer data, most of us know that we should be making regular backups because a system failure would cause unthinkable hardship. Even with this knowledge, many customers live through each day without a backup for accounting data, databases, digital photos and other important files that are irreplaceable.
Data Back up
Breeze End Tech Data Recovery
Your data means everything to you – it’s your business and it’s your future. You can trust and rely on our expertise here too. Data recovery from deleted, formatted, damaged, failed, corrupted, or inaccessible secondary storage media or storage media such as hard disk drives, storage tapes, CDs, DVDs, RAID – almost from any kind of storage media –its possible to recover your data using data mining solutions.
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How do you define Data recovery process?
What are the data recovery techniques used?
What is the time frame required for a data recovery process?
How Breeze End Tech help you with data recovery process?
How do you define data recovery process?
Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Often the data are being salvaged from storage media such as hard disk drives, storage tapes, CDs, DVDs, RAID, and other electronics. Recovery may be required due to physical damage to the storage device or logical damage to the file system that prevents it from being mounted by the host operating system.
The most common “data recovery” scenario involves an operating system (OS) failure (typically on a single-disk, single-partition, single-OS system), in which case the goal is simply to copy all wanted files to another disk. This can be easily accomplished with a Live CD, most of which provide a means to mount the system drive and backup disks or removable media, and to move the files from the system disk to the backup media with a file manager or optical disc authoring software. Such cases can often be mitigated by disk partitioning and consistently storing valuable data files (or copies of them) on a different partition from the replaceable OS system files.
Another scenario involves a disk-level failure, such as a compromised file system or disk partition or a hard disk failure. In any of these cases, the data cannot be easily read. Depending on the situation, solutions involve repairing the file system, partition table or master boot record, or hard disk recovery techniques ranging from software-based recovery of corrupted data to hardware replacement on a physically damaged disk. If hard disk recovery is necessary, the disk itself has typically failed permanently, and the focus is rather on a one-time recovery, salvaging whatever data can be read.
In a third scenario, files have been “deleted” from a storage medium. Typically, deleted files are not erased immediately; instead, references to them in the directory structure are removed, and the space they occupy is made available for later overwriting. In the meantime, the original file may be restored. Although there is some confusion over the term, “data recovery” may also be used in the context of forensic applications or espionage.
Recovering data after physical damage
A wide variety of failures can cause physical damage to storage media. CD-ROMs can have their metallic substrate or dye layer scratched off; hard disks can suffer any of several mechanical failures, such as head crashes and failed motors; tapes can simply break. Physical damage always causes at least some data loss, and in many cases, the logical structures of the file system are damaged as well. Any logical damage must be dealt with before files can be salvaged from the failed media.
Most physical damage cannot be repaired by end users. For example, opening a hard disk in a normal environment can allow airborne dust to settle on the platter and become caught between the platter and the read/write head, causing new head crashes that further damage the platter and thus compromise the recovery process. Furthermore, end users generally do not have the hardware or technical expertise required to make these repairs. Consequently, costly data recovery companies are often employed to salvage important data.
What are the Recovery techniques used?
Recovering data from physically-damaged hardware can involve multiple techniques. Some damage can be repaired by replacing parts in the hard disk. This alone may make the disk usable, but there may still be logical damage. A specialized disk-imaging procedure is used to recover every readable bit from the surface. Once this image is acquired and saved on a reliable medium, the image can be safely analyzed for logical damage and will possibly allow for much of the original file system to be reconstructed.
Media that has suffered a catastrophic electronic failure will require data recovery in order to salvage its contents.
Examples of physical recovery procedures are: removing a damaged PCB (printed circuit board) and replacing it with a matching PCB from a healthy drive, performing a live PCB swap (in which the System Area of the HDD is damaged on the target drive which is then instead read from the donor drive, the PCB then disconnected while still under power and transferred to the target drive), read/write head assembly with matching parts from a healthy drive, removing the hard disk platters from the original damaged drive and installing them into a healthy drive, and often a combination of all of these procedures. Some data recovery companies have procedures that are highly technical in nature and are not recommended for an untrained individual. Each of them will void the manufacturer’s warranty. For companies who will not void a warranty, see companies such as On track, SalvageData, and DriveSavers.
Recovering from logical (non-hardware) damage Overwritten data.
When data have been physically overwritten on a hard disk it is generally assumed that the previous data are no longer possible to recover. In 1996, Peter Gutmann, a respected computer scientist, presented a paper that suggested overwritten data could be recovered through the use of Scanning transmission electron microscopy. In 2001, he presented another paper on a similar topic. Substantial criticism has followed, primarily dealing with the lack of any concrete examples of significant amounts of overwritten data being recovered. To guard against this type of data recovery, he and Colin Plumb designed the Gutmann method, which is used by several disk scrubbing software packages.
Although Gutmann’s theory may be correct, there’s no practical evidence that overwritten data can be recovered. Moreover, there are good reasons to think that it cannot.
Corrupt file systems
In some cases, data on a hard drive can be unreadable due to damage to the file system. In the majority of these cases, at least a portion of the original data can be recovered by repairing the damaged file system using specialized data recovery software. This type of data recovery can be performed by knowledgeable end-users as it requires no special physical equipment. However, more serious cases can still require expert intervention.
What is the time frame required for a data recovery process?
Report delivered in as little as 6 hours and typically within 24-48 hours depending on service level selected.
Online Data Recovery
“Online” or “Remote” data recovery is yet another method to restore the lost or deleted data. It is the same as performing the regular software based recoveries except that this kind of recovery is performed over the Internet without physically having the drive or computer in possession. The recovery technician sitting somewhere else gains access to the user’s computer and complete the recovery job online. In this scenario, the user doesn’t have to travel or send the media to anywhere physically.
Although online data recovery is convenient and useful in many cases, it still carries some points making it less popular than the classic data recovery methods. First of all, it requires a stable broadband Internet connection for it to be performed correctly, which many third world countries still lack. Also, it cannot be performed in case of physical damage to media and for such cases, the traditional in-lab recovery has to take place.