Data Recovery Introduction Data recovery is the process of restoring data that has been lost, accidentally deleted, corrupted or made inaccessible. It is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Recovery may be required due to physical damage to the storage device or logical damage to the file system The essence of data recovery : Data recovery means retrieving lost, deleted, unusable or inaccessible data that lost for various reasons. Data recovery not only restores lost files but also recovers corrupted data. There are software and hardware reasons that cause data loss, while we can recover data by software and hardware ways. The scope of data recovery : There are so many …show more content…
There are some causes that may leads to Data Loss : Sabotage, Natural Disaster Hardware Error, Software Corruption Virus Attack Human Error Intentional deletion Accidental overwriting of files Software related reasons Some Viruses, format, mis-partition, misclone, mis-operation, network deletion, power-cut during operation all may be the software reasons. The symptoms are usually mis-operation, read error, can not find or open file, report no partition, not formatted, password lost and troubled characters use software tools to recover it. So called soft recovery means data can be recovered by using softwares. Hardware related reasons Sometimes data loss is because of hardware, such as bad sector in hard disk, power cut, head damage, circuit panel problem, etc. or Sometimes data loss takes place because of these hardware problems the speed of hardware become slow, cannot operate successfully; cannot read data, etc Some statics about which cause is responsible for how much percentage of data loss : Tips to Prevent Data Loss
Hard Disk Drive (HDD) - Hard drives can store very large amounts of data ranging from 200GB – 1TB. A hard drive is made up of a magnetic disk that consists of a number of platters/disks that are coated in a magnetic material that rotate at 7200 RPM. The data is encoded into bits and written into the disks as a series of changes in the direction of the magnetic pull, and then the data is read by detecting the changes in direction on the
Data could be lost permanently, rather than at least being available in a consistent state that existed prior to a failure.
Unknown / unintentional or un-covenanted movements this could be in the form of unpredictable movements whilst the equipment is being maintained or at the reinstatement of power. Other causes may be due to the corruption of software, or damage to the any of the peripherals or programmable electronics.
Reverse engineering is a procedure or capacity to make a logical and physical information show by pulling data from an existing information sources. Reverse engineering is a challenging task. It empowers you to make applications act precisely how you need them to. Data reverse engineering (DRE) is a moderately new approach used to address a general classification of data degradation issues. Data reverse engineering joins together ways to comb through data with detailed data administration practices. The methodology improves the frameworks re-engineering capability.
Computer virus or malware attack – Attack by PC virus or malicious code is another significant reason for corruption in Outlook OST file. As any other data stored in your system, the OST file also gets affected by computer viruses or malware. As a prevention, you can install a powerful anti-virus software that is effective and successfully prevents the PC viruses and malware from entering into your system. 3. Unusual or Abnormal Outlook Termination -
1.0 IntroductionIn this report I will be concentrating on the failure of software systems. To understand why software systems fail we need to understand what are software systems. Software systems are a type of information system. This is because a software system is basically a means for hardware to process information. Flynn’s definition of an information system is:"An information system provides procedures to record and make available information, concerning part of an organization, to assist organization-related activities."Humans have been processing information manually for thousands of years, but with the vast increase of demand for knowledge this century has meant that a new method of information processing has been needed. Software systems have provided a new means that is much faster and efficient.
There is also a possibility if the manufacturer always assumes that the software and plane’s data will be correct all the time. The software engineer often concern to set the software as efficient and accurate so that incidents never occurred because of technological failure. The point that depict the software engineers considers decisive action on the basis of principles of the code. The software engineers considers limits of the state, try to sort out and understand requirements, using skills on designing appropriately and execute them correctly. The later investigation concludes that the human error is also responsible for the Quantus incident. The investigators tried to found the possible factor and claimed that it’s not clear how to add data manually. If the software...
There are various programs that can be used for recovering deleted files such as UndeletePlus, Disk Digger, and EnCase Forensics, which are associated with different success rates and particular functions. UndeletePlus is a program that is available for $29.95 and is very easy to use since it involves selecting a drive and clicking the Scan button. The program will then list any or all deleted files it finds or discover in the recovery process (Easttom & Taylor, 2011, p.287). On the contrary, DiskDigger is a freeware, which has a wizard interface that takes the user through the process. This involves identifying the drive to scan, the type of search to be conducted, and the kind of files to search. EnCase Forensics the leader in digital forensics and available for $2,995 since it incorporates various features such as ...
Data acquisition is the process of copying data. For computer forensics, it’s the task of collecting digital evidence from electronic media. There are two types of data acquisition: static acquisitions and live acquisitions.
FlashBack concept can play a significant role in a flexible way to restore data effected from logical corruption.
One of them could be the system could crash as if not saved data can
The thought of security of data refers to protecting or to keeping any data from damage or unofficial and undesirable actions. In other words, it refers to maintain or ensure the privacy of the data and electronic information alongside of its integrity, and allow certain individuals with certain legitimacy or authority to access it. In our lives, how many times did we hear about or see hackers hacking some unauthorized information? Then they take this information and publish it on the internet, they might remove it, damage it or modify it or for any other reasons. Hacking Hillary Clinton’s email account and taking snapshots of the very private emails then publishing them on the internet might be an example and many unlimited examples are out there. Today due to complexity of structure of its use, it is overwhelmingly difficult, in particular for businesses to secure their data and protect their information. Nowadays, almost ...
... due to mismatched impedances or reflections in the signal path” (Smith, 2013). Another cause could be an “electromagnetic interference and crosstalk with other signals” (Rouse, 2008) as a result events could happen where a computer can’t perform at its best due to the fact it cannot process some many signals at once and could result in data being lost between network devices
Nowadays, people stores their data in computer rather than in physical objects like paper, this is to ensure their data are durable (usually against damage such as corrosion). These data can also be reproduced easily with a simple step and can be kept for long periods of time. Users can organize files in their own ways, where they themselves will know where their data are kept, thus allowing simplicity to ease of access to data. Given the generality of storing data in the computer, this thus increases the focus on data security.
Inaccurate or incomplete data records are not of use to anyone, and we cannot control the way data is stored in the databases. Therefore, the best solution to having an organized data is to apply a process called data cleansing.