Tuesday, 1 October 2013

Data Recovery Dictionary: 10 Terms to Know

When using a computing device, you always face the risk of hardware failure. Where computers are concerned, most hardware can be replaced only at great financial expense. But when a hard drive fails, you also stand to lose a lot of data. And unlike a dead graphics card, you can’t just replace it and continue on with life. If you’ve never looked into the data recovery market before, you’ll want to consider a number of things as you investigate recovery services. Here are 10 terms you’ll need to keep an eye out for as you research:

Data Recovery
The process of retrieving data from a damaged digital media device, either through data corruption or hardware failure, is known as data recovery. Services in this market typically extend beyond simple computer hard drives and can include memory cards, tapes, mobile phones, PDAs, CDs, DVDs, data cartridges and even Xboxes.
Backup
A copy of inactive data created as a precautionary measure against data failure or loss. Common business practice is to create data backups on a periodic basis in redundant locations (e.g., DVDs, secondary hard drives and flash drives).
Formatted Capacity
The actual available storage space in a hard drive. The formatted capacity equals the gross capacity minus the capacity taken up by the data required to monitor the hard drive.
Fragmented Data
Data that has been broken up and stored in multiple locations on a single hard drive is often referred to as fragmented. As data is written and removed, new data is often split up and placed in available locations.
Hard Disk Drive
Often abbreviated to HDD, or simply called a drive, hard drive, disk or hard disk, a hard drive is the component of your computer in which data is stored and retrieved. The data is stored on a disk, or “platter,” which is then accessed by read/write heads.
Head
A small electromagnetic device inside the hard drive which reads, writes and removes data from the drive.
Platter
The platter is the part of the disk where digital data is stored on a hard drive. It's made of a nonmagnetic material like aluminum, which is then covered in a magnetic material derivative of iron-oxide or a cobalt-based solution.
Reading Problems
When the magnetic coating of platters is damaged, sectors of the disk can become unreadable and thus inaccessible. This damage is most often caused by rough handling of the disk when installing or while transporting it.
Sector
The smallest data unit that is accessible on a disk is known as a sector. This typically consists of 512 bytes of data, though the size will vary depending on the formatting.
Source Drive
The non-functioning hard drive is often referred to as the source drive as data will be recovered from the original or source location.
As is the case with most any technology, your data may not always be recoverable. Understanding the complexities of the hard drive will help you better realize the work involved in recovering hard drive data. In most situations, your personal data can be saved. But depending on the damage done to the hard drive, even knowing these terms won’t save you.

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