In the general data recovery category, a few different types of techniques are applied to specific scenarios. Hardware data recovery techniques work on situations where a system failure prevents easy access to a hard drive. With more sophisticated hardware, this problem is easily solved. Another type of data recovery technique applies to disk level failure, where more elaborate approaches may be r
equired. Other types of data recovery pertain to data that has been deleted and possibly overwritten, where data recovery involves specific manipulation of the bits recorded on a drive. Certain key data recovery techniques that apply to disk failures and other scenarios are sometimes called in-place repair and read-only data recovery. The first type of approach uses utilities and other resources to try to fix disk errors. A read-only approach creates a copy of a drive, where data can be extracted. In another approach, professionals may try to physically repair a failed disk with replacement parts. A key to understanding data recovery is to look at the difference between older magnetic drive mediums and new solid-state drives, which record data in different ways.
