DEFINATION :
Data recovery is the process of restoring data that has been lost, accidentally deleted, corrupted or made inaccessible.
How data recovery works ?
Data recovery is possible because a file and the information about that file are stored in different places. For example, the Windows operating system uses a file allocation table to track which files are on the hard drive and where they are stored. The allocation table is like a book’s table of contents, while the actual files on the hard drive are like the pages in the book.
When data needs to be recovered, it’s usually only the file allocation table that’s not working properly. The actual file to be recovered may still be on the hard drive in flawless condition. If the file still exists — and it is not damaged or encrypted it can be recovered. If the file is damaged, missing or encrypted, there are other ways of recovering it. If the file is physically damaged, it can still be reconstructed.
Different Types of Data Recovery Services
Logical data recovery
When the problem of data recovery doesn’t affect the hard drive itself but only the computer, logical data recovery is used. This is when a drive is still in good shape and data is lost. Damage might be due to a problem with the operating system. Sometimes there could be a problem with the master file table which is like the computer record pr physical location each file occupies.
Physical Data Recovery
This is when your drive is partially physically damaged. If externally damaged, there are still expert data recovery companies that can get these done. They could technically replace or repair the drive and circuit board, they could move the disk platter to a new drive. For SSD, they might have to remove the NAND flash that stores the data. Which is then transferred to a new board with the original controller chip.
Instant Data Recovery
This is done if your computer has a software issue and it affected your data or you are unable to access your computer. To recover your files the technicians would backup your data from your computer. They also send it to a secondary storage device. Then maybe when your entire computer now works or you get a new one, they will transfer back to the new device.
Continuous Data Protection
Computer data recovery technicians don’t only offer recovery services but also preventive services. Either physical or remote services, they can offer software or take you through backup measures which will prevent you from having the same issue again. This measure is most applicable if what led to your data loss was due to a virus attack, corrupted files, or software issues.
These measures include antivirus software, malware mitigation methods, and automated backups. The automated backup could be set up such that you can your data will back up for a moment at a specific interval. These will give continuous data protection even after data got recovered.
Where Can I Recover Files From?
- USB flash drives
- Magnetic hard drives
- Solid state hard drives
- Mobile phones (Android & iOS)
- SD cards
- Tablets
Data Protection Strategy
- Cloud Backup
- Local Backup
Reference Links
- https://www.handyrecovery.com/what-is-data-recovery-and-how-does-data-recovery-software-work/
- https://www.techtarget.com/searchdisasterrecovery/definition/data-recovery
- https://ticktocktech.com/blog/2022/08/21/different-data-recovery-services/
SANAPALA SIDDHARTHA
21VV1A1256
INFORMATION TECHNOLOGY