World Reviews

In computing, data recovery is a process of salvaging inaccessible data from corrupted or damaged secondary storage, removable media or files, when the data they store cannot be accessed in a normal way. The data is most often salvaged from storage media such as internal or external hard disk drives (HDDs), solid-state drives (SSDs), USB flash drives, magnetic tapes, CDs, DVDs, RAID subsystems, and other electronic devices. 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 (OS). The most common data recovery scenario involves an operating system failure, malfunction of a storage device, accidental damage or deletion, etc. (typically, on a single-drive, single-partition, single-OS system), in which case the goal is simply to copy all wanted files to another drive. This can be easily accomplished using a Live CD, many of which provide a means to mount the system drive and backup drives or removable media, and to move the files from the system drive 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 drive-level failure, such as a compromised file system or drive partition, or a hard disk drive 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 drive recovery techniques ranging from software-based recovery of corrupted data, hardware- and software-based recovery of damaged service areas (also known as the hard disk drive's "firmware"), to hardware replacement on a physically damaged drive. If a drive recovery is necessary, the drive itself has typically failed permanently, and the focus is rather on a one-time recovery, salvaging whatever data can be read.The term "data recovery" is also used in the context of forensic applications or espionage, where data which have been encrypted or hidden, rather than damaged, are recovered. 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 much of the original file system to be reconstructed. In some cases, data on a hard disk drive can be unreadable due to damage to the partition table or file system, or to (intermittent) media errors. In the majority of these cases, at least a portion of the original data can be recovered by repairing the damaged partition table or file system using specialized data recovery software such as Testdisk; software like dd rescue can image media despite intermittent errors, and image raw data when there is partition table or file system damage. This type of data recovery can be performed by people without expertise in drive hardware, as it requires no special physical equipment or access to platters.Sometimes data can be recovered using relatively simple methods and tools; more serious cases can require expert intervention, particularly if parts of files are irrecoverable. Data carving is the recovery of parts of damaged files using knowledge of their structure.Recovery experts do not always need to have physical access to the damaged hardware. When the lost data can be recovered by software techniques, they can often perform the recovery using remote access software over the Internet, LAN or other connection to the physical location of the damaged media. The process is essentially no different from what the end user could perform by themselves. Remote recovery requires a stable connection with an adequate bandwidth. However, it is not applicable where access to the hardware is required, as in cases of physical damage. RAID (originally redundant array of inexpensive disks, now commonly array of independent disks) is a data storage virtualization technology that combines multiple physical disk drive components into a single logical unit for the purposes of data redundancy, performance improvement, or both. Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the required level of redundancy and performance. The different schemas, or data distribution layouts, are named by the word RAID followed by a number, for example RAID 0 or RAID 1. Each schema, or RAID level, provides a different balance among the key goals: reliability, availability, performance, and capacity. RAID levels greater than RAID 0 provide protection against unrecoverable sector read errors, as well as against failures of whole physical drives.

Aruna Irani to play Shaheer Shiekh’s grandmother in Anirudh Pathak’s Mughal-E-Azam

Aruna Irani to play Shaheer Shiekh’s grandmother in Anirudh Pathak’s Mughal-E-Azam

Mumbai: Without an iota of doubt, she is one of the refined actresses. Varied generations have seen her work. Her acting finesse and charm have not just …

Naina’s family to catch her partying with Sameer and his gang in Yeh Un Dinon?

Naina’s family to catch her partying with Sameer and his gang in Yeh Un Dinon?

MUMBAI: Sony TV show Yeh Un Dinon Ki Baat Hai (Shashi Sumeet Productions) presents an interesting drama around all the teenage characters who are trying to …

I wish to play a hero: Hiten Meghrajani

I wish to play a hero: Hiten Meghrajani

MUMBAI: Actor Hiten Meghrajani, who essayed the role of Rehaan in the show Ishqbaaaz, now wishes to play a hero. “Rehaan will be one of my most special …

Mehek and Shaurya to bond over food in Zee TV’s Zindagi Ki Mehek

Mehek and Shaurya to bond over food in Zee TV’s Zindagi Ki Mehek

MUMBAI: Zee TV show Zindagi Ki Mehek (Parin Multimedia) will soon witness a twist which will push the love story of Shaurya (Karan Vohra) and Mehek (Samiksha …

ZEE5’s Naseeruddin Shah starrer ‘Zero KMS’ becomes the highest rated web series

ZEE5’s Naseeruddin Shah starrer ‘Zero KMS’ becomes the highest rated web series

MUMBAI: ZEE5’s ‘Zero KMS’ starring Nasseruddin Shah, which also marks his debut in the digital space has already become the talk of the town since its …

Rukhsar to a play spoilsport in Kabir-Zara’s KISS moment in Ishq Subhan Allah

Rukhsar to a play spoilsport in Kabir-Zara’s KISS moment in Ishq Subhan Allah

MUMBAI: Ishq Subhan Allah is all set to witness another interesting episode. The Zee TV’s show will soon see an intimate moment between the two leads. Kabir …

Kapil Sharma trying to change lifestyle; promises to be back with a new show

Kapil Sharma trying to change lifestyle; promises to be back with a new show

MUMBAI: Actor-comedian Kapil Sharma, who has been in the news for controversies and trouble in his professional and public life, says he is trying to change …

I was intentionally made to come across as a lesbian on a reality show, says Aashka Goradia

I was intentionally made to come across as a lesbian on a reality show, says Aashka Goradia

MUMBAI: Television’s gorgeous ladies, Aashka Goradia and Juhi Parmar make shocking revelations about reality shows in a candid chat with Rajeev …

Jennifer Winget gets her hands dirty for Bepannah

Jennifer Winget gets her hands dirty for Bepannah

MUMBAI: Jennifer Winget is known for her dedication in the TV industry. She is best known for her performance in Beyhadh as Maya. Currently, the actress is …

Bimalendu to trouble Roshni in Aakash Aath’s Briddhasram

Bimalendu to trouble Roshni in Aakash Aath’s Briddhasram

KOLKATA: With the introduction of the fake accident drama, the current track of the Aakash Aath soap, Briddhasram, will become all the more interesting. Loyal …